Index: llvm/trunk/test/Object/invalid.test
===================================================================
--- llvm/trunk/test/Object/invalid.test
+++ llvm/trunk/test/Object/invalid.test
@@ -135,9 +135,9 @@
 ## Check that llvm-readobj reports a warning if .dynsym has an invalid sh_entsize.
 
 # RUN: yaml2obj %s --docnum=7 -o %t7
-# RUN: llvm-readobj --dyn-symbols %t7 2>&1 | FileCheck --check-prefix=INVALID-DYNSYM-SIZE %s
+# RUN: llvm-readobj --dyn-symbols %t7 2>&1 | FileCheck -DFILE=%t7 --check-prefix=INVALID-DYNSYM-SIZE %s
 
-# INVALID-DYNSYM-SIZE: warning: invalid section size (48) or entity size (32)
+# INVALID-DYNSYM-SIZE: warning: '[[FILE]]': invalid section size (48) or entity size (32)
 
 --- !ELF
 FileHeader:
@@ -409,9 +409,9 @@
 ## Check llvm-readobj reports it.
 
 # RUN: yaml2obj %s --docnum=20 -o %t20
-# RUN: not llvm-readobj -dt %t20 2>&1 | FileCheck --check-prefix=INVALID-VERSION %s
+# RUN: not llvm-readobj -dt %t20 2>&1 | FileCheck -DFILE=%t20 --check-prefix=INVALID-VERSION %s
 
-# INVALID-VERSION: error: Invalid version entry
+# INVALID-VERSION: error: '[[FILE]]': Invalid version entry
 
 --- !ELF
 FileHeader:
@@ -438,9 +438,9 @@
 ## Check llvm-readobj reports it.
 
 # RUN: yaml2obj %s --docnum=21 -o %t21
-# RUN: llvm-readobj --dynamic-table %t21 2>&1 | FileCheck --check-prefix=INVALID-DTSTRTAB %s
+# RUN: llvm-readobj --dynamic-table %t21 2>&1 | FileCheck -DFILE=%t21 --check-prefix=INVALID-DTSTRTAB %s
 
-# INVALID-DTSTRTAB: warning: Unable to parse DT_STRTAB: virtual address is not in any segment: 0xffff0000
+# INVALID-DTSTRTAB: warning: '[[FILE]]': Unable to parse DT_STRTAB: virtual address is not in any segment: 0xffff0000
 
 --- !ELF
 FileHeader:
@@ -468,17 +468,17 @@
 
 # RUN: llvm-readobj --dyn-relocations \
 # RUN:   %p/Inputs/corrupt-invalid-relocation-size.elf.x86-64 2>&1 \
-# RUN:    | FileCheck --check-prefix=RELOC-BROKEN-ENTSIZE %s
+# RUN:    | FileCheck -DFILE=%p/Inputs/corrupt-invalid-relocation-size.elf.x86-64 --check-prefix=RELOC-BROKEN-ENTSIZE %s
 
-# RELOC-BROKEN-ENTSIZE: warning: invalid section size (24) or entity size (25)
+# RELOC-BROKEN-ENTSIZE: warning: '[[FILE]]': invalid section size (24) or entity size (25)
 
 ## Check that llvm-readobj reports a warning when .dynamic section has an invalid
 ## size, which isn't a multiple of the dynamic entry size. 
 
 # RUN: yaml2obj %s --docnum=22 -o %t22
-# RUN: llvm-readobj --dyn-relocations %t22 2>&1 | FileCheck --check-prefix=DYN-TABLE-SIZE %s
+# RUN: llvm-readobj --dyn-relocations %t22 2>&1 | FileCheck -DFILE=%t22 --check-prefix=DYN-TABLE-SIZE %s
 
-# DYN-TABLE-SIZE: warning: invalid section size (1) or entity size (16)
+# DYN-TABLE-SIZE: warning: '[[FILE]]': invalid section size (1) or entity size (16)
 
 --- !ELF
 FileHeader:
@@ -495,9 +495,9 @@
 ## than the object size. Check llvm-readobj reports it.
 
 # RUN: yaml2obj %s --docnum=23 -o %t23
-# RUN: llvm-readobj --dyn-relocations %t23 2>&1 | FileCheck --check-prefix=DYN-TABLE-PHDR %s
+# RUN: llvm-readobj --dyn-relocations %t23 2>&1 | FileCheck -DFILE=%t23 --check-prefix=DYN-TABLE-PHDR %s
 
-# DYN-TABLE-PHDR: warning: PT_DYNAMIC segment offset + size exceeds the size of the file
+# DYN-TABLE-PHDR: warning: '[[FILE]]': PT_DYNAMIC segment offset + size exceeds the size of the file
 
 --- !ELF
 FileHeader:
@@ -522,7 +522,7 @@
 
 # RUN: yaml2obj %s --docnum=24 -o %t24
 # RUN: llvm-readobj --dyn-relocations %t24 2>&1 \
-# RUN:  | FileCheck --check-prefix=DYN-TABLE-PHDR %s
+# RUN:  | FileCheck -DFILE=%t24 --check-prefix=DYN-TABLE-PHDR %s
 
 --- !ELF
 FileHeader:
Index: llvm/trunk/test/tools/llvm-readobj/elf-broken-dynsym-link.test
===================================================================
--- llvm/trunk/test/tools/llvm-readobj/elf-broken-dynsym-link.test
+++ llvm/trunk/test/tools/llvm-readobj/elf-broken-dynsym-link.test
@@ -3,10 +3,10 @@
 
 ## Case 1: sh_link is set to 0.
 # RUN: yaml2obj --docnum=1 %s -o %t1
-# RUN: llvm-readobj -S %t1 2>&1 | FileCheck %s --check-prefixes=LLVM,ERR
-# RUN: llvm-readelf -S %t1 2>&1 | FileCheck %s --check-prefixes=GNU,ERR
+# RUN: llvm-readobj -S %t1 2>&1 | FileCheck %s -DFILE=%t1 --check-prefixes=LLVM,ERR
+# RUN: llvm-readelf -S %t1 2>&1 | FileCheck %s -DFILE=%t1 --check-prefixes=GNU,ERR
 
-# ERR: warning: invalid sh_type for string table section [index 0]: expected SHT_STRTAB, but got SHT_NULL
+# ERR: warning: '[[FILE]]': invalid sh_type for string table section [index 0]: expected SHT_STRTAB, but got SHT_NULL
 
 # LLVM:      Name: .dynsym
 # LLVM-NEXT:  Type: SHT_DYNSYM
@@ -36,10 +36,10 @@
 ## Case 2: sh_link is set to 255, which is larger than the number of the sections.
 # RUN: yaml2obj --docnum=2 %s -o %t2
 
-# RUN: llvm-readobj -S %t2 2>&1 | FileCheck %s --check-prefixes=LLVM2,ERR2
-# RUN: llvm-readelf -S %t2 2>&1 | FileCheck %s --check-prefixes=GNU2,ERR2
+# RUN: llvm-readobj -S %t2 2>&1 | FileCheck -DFILE=%t2 %s --check-prefixes=LLVM2,ERR2
+# RUN: llvm-readelf -S %t2 2>&1 | FileCheck -DFILE=%t2 %s --check-prefixes=GNU2,ERR2
 
-# ERR2: warning: invalid section index
+# ERR2: warning: '[[FILE]]': invalid section index
 
 --- !ELF
 FileHeader:
Index: llvm/trunk/test/tools/llvm-readobj/elf-dynamic-malformed.test
===================================================================
--- llvm/trunk/test/tools/llvm-readobj/elf-dynamic-malformed.test
+++ llvm/trunk/test/tools/llvm-readobj/elf-dynamic-malformed.test
@@ -3,29 +3,29 @@
 
 # RUN: yaml2obj %s --docnum=1 -o %t.bad-size
 # RUN: llvm-readobj --all %t.bad-size 2>&1 \
-# RUN:   | FileCheck %s --implicit-check-not=warning --check-prefix WARN
+# RUN:   | FileCheck %s -DFILE=%t.bad-size --implicit-check-not=warning --check-prefix WARN
 # RUN: llvm-readelf --all %t.bad-size 2>&1 \
-# RUN:   | FileCheck %s --implicit-check-not=warning --check-prefix WARN-GNU
+# RUN:   | FileCheck %s -DFILE=%t.bad-size --implicit-check-not=warning --check-prefix WARN-GNU
 
 # WARN-NOT: warning
-# WARN: warning: invalid section size (4) or entity size (16)
+# WARN: warning: '[[FILE]]': invalid section size (4) or entity size (16)
 # WARN-EMPTY:
 # WARN-NEXT: File:
 # WARN:      Symbols [
 # WARN:      ]
 # WARN-EMPTY:
 ## A warning is printed at the place where a normal dynamic table should be. 
-# WARN-NEXT: warning: invalid section size (4) or entity size (16)
+# WARN-NEXT: warning: '[[FILE]]': invalid section size (4) or entity size (16)
 # WARN-NEXT: ProgramHeaders [
 
 # WARN-GNU-NOT:  warning
-# WARN-GNU:      warning: invalid section size (4) or entity size (16)
+# WARN-GNU:      warning: '[[FILE]]': invalid section size (4) or entity size (16)
 # WARN-GNU-NEXT: ELF Header:
 # WARN-GNU:      Symbol table '.symtab' contains 1 entries:
 # WARN-GNU:        0:
 # WARN-GNU-EMPTY:
 ## A warning is printed at the place where a normal dynamic table should be. 
-# WARN-GNU:      warning: invalid section size (4) or entity size (16)
+# WARN-GNU:      warning: '[[FILE]]': invalid section size (4) or entity size (16)
 # WARN-GNU-EMPTY:
 
 --- !ELF
@@ -162,9 +162,9 @@
 ## Test handling of DT_STRTAB pointing outside the file's address space.
 # RUN: yaml2obj %s --docnum=4 -o %t.bad-strtab
 
-# RUN: llvm-readobj --dynamic-table %t.bad-strtab 2>&1 >/dev/null | FileCheck %s --check-prefix BAD-STRTAB-ERR
-# RUN: llvm-readelf --dynamic-table %t.bad-strtab 2>&1 >/dev/null | FileCheck %s --check-prefix BAD-STRTAB-ERR
-# BAD-STRTAB-ERR: warning: Unable to parse DT_STRTAB: virtual address is not in any segment: 0x2000000
+# RUN: llvm-readobj --dynamic-table %t.bad-strtab 2>&1 >/dev/null | FileCheck -DFILE=%t.bad-strtab %s --check-prefix BAD-STRTAB-ERR
+# RUN: llvm-readelf --dynamic-table %t.bad-strtab 2>&1 >/dev/null | FileCheck -DFILE=%t.bad-strtab %s --check-prefix BAD-STRTAB-ERR
+# BAD-STRTAB-ERR: warning: '[[FILE]]': Unable to parse DT_STRTAB: virtual address is not in any segment: 0x2000000
 
 # RUN: llvm-readobj --dynamic-table --needed-libs %t.bad-strtab | FileCheck %s --check-prefixes=BAD-STRTAB,BAD-STRTAB-LLVM
 # RUN: llvm-readelf --dynamic-table --needed-libs %t.bad-strtab | FileCheck %s --check-prefixes=BAD-STRTAB,BAD-STRTAB-GNU
@@ -206,10 +206,10 @@
 
 ## Test handling of other d_ptr tags pointing outside the file's address space.
 # RUN: yaml2obj %s --docnum=5 -o %t.bad-rela
-# RUN: llvm-readobj --dynamic-table %t.bad-rela 2>&1 | FileCheck %s --check-prefixes=CHECK,BAD-RELA
-# RUN: llvm-readelf --dynamic-table %t.bad-rela 2>&1 | FileCheck %s --check-prefixes=CHECK,BAD-RELA-GNU
+# RUN: llvm-readobj --dynamic-table %t.bad-rela 2>&1 | FileCheck -DFILE=%t.bad-rela %s --check-prefixes=CHECK,BAD-RELA
+# RUN: llvm-readelf --dynamic-table %t.bad-rela 2>&1 | FileCheck -DFILE=%t.bad-rela %s --check-prefixes=CHECK,BAD-RELA-GNU
 
-# CHECK: warning: Unable to parse DT_RELA: virtual address is not in any segment: 0x1000000
+# CHECK: warning: '[[FILE]]': Unable to parse DT_RELA: virtual address is not in any segment: 0x1000000
 
 # BAD-RELA:      DynamicSection [ (2 entries)
 # BAD-RELA-NEXT:   Tag                Type Name/Value
Index: llvm/trunk/test/tools/llvm-readobj/elf-dynamic-not-in-pt-dynamic.test
===================================================================
--- llvm/trunk/test/tools/llvm-readobj/elf-dynamic-not-in-pt-dynamic.test
+++ llvm/trunk/test/tools/llvm-readobj/elf-dynamic-not-in-pt-dynamic.test
@@ -3,11 +3,11 @@
 
 # RUN: yaml2obj %s -o %t.o
 # RUN: llvm-readobj --dynamic-table %t.o 2>&1 \
-# RUN:   | FileCheck --check-prefixes=WARNING,LLVM %s
+# RUN:   | FileCheck -DFILE=%t.o --check-prefixes=WARNING,LLVM %s
 # RUN: llvm-readelf --dynamic-table %t.o 2>&1 \
-# RUN:   | FileCheck --check-prefixes=WARNING,GNU %s
+# RUN:   | FileCheck -DFILE=%t.o --check-prefixes=WARNING,GNU %s
 
-# WARNING:   warning: The SHT_DYNAMIC section '.dynamic' is not contained within the PT_DYNAMIC segment
+# WARNING:   warning: '[[FILE]]': The SHT_DYNAMIC section '.dynamic' is not contained within the PT_DYNAMIC segment
 
 # LLVM:      DynamicSection [ (2 entries)
 # LLVM-NEXT:   Tag                Type     Name/Value
Index: llvm/trunk/test/tools/llvm-readobj/elf-malformed-pt-dynamic.test
===================================================================
--- llvm/trunk/test/tools/llvm-readobj/elf-malformed-pt-dynamic.test
+++ llvm/trunk/test/tools/llvm-readobj/elf-malformed-pt-dynamic.test
@@ -13,14 +13,14 @@
 # within the file.
 # RUN: cp %t.stripped %t.truncated1
 # RUN: %python -c "with open(r'%t.truncated1', 'r+') as f: f.truncate(0x1001)"
-# RUN: llvm-readobj %t.truncated1 --dynamic-table 2>&1 | FileCheck %s
+# RUN: llvm-readobj %t.truncated1 --dynamic-table 2>&1 | FileCheck -DFILE=%t.truncated1 %s
 
 # Test case where the offset is too large to be in the file.
 # RUN: cp %t.stripped %t.truncated2
 # RUN: %python -c "with open(r'%t.truncated2', 'r+') as f: f.truncate(0xFFF)"
-# RUN: llvm-readobj %t.truncated2 --dynamic-table 2>&1 | FileCheck %s
+# RUN: llvm-readobj %t.truncated2 --dynamic-table 2>&1 | FileCheck -DFILE=%t.truncated2 %s
 
-# CHECK: warning: PT_DYNAMIC segment offset + size exceeds the size of the file
+# CHECK: warning: '[[FILE]]': PT_DYNAMIC segment offset + size exceeds the size of the file
 
 --- !ELF
 FileHeader:
Index: llvm/trunk/test/tools/llvm-readobj/elf-non-dynamic-in-pt-dynamic.test
===================================================================
--- llvm/trunk/test/tools/llvm-readobj/elf-non-dynamic-in-pt-dynamic.test
+++ llvm/trunk/test/tools/llvm-readobj/elf-non-dynamic-in-pt-dynamic.test
@@ -6,11 +6,11 @@
 
 # RUN: yaml2obj --docnum=1 %s -o %t.o
 # RUN: llvm-readobj --dynamic-table %t.o 2>&1 \
-# RUN:   | FileCheck %s --check-prefixes=WARNING,LLVM
+# RUN:   | FileCheck %s --DFILE=%t.o --check-prefixes=WARNING,LLVM
 # RUN: llvm-readelf --dynamic-table %t.o 2>&1 \
-# RUN:   | FileCheck %s --check-prefixes=WARNING,GNU
+# RUN:   | FileCheck %s --DFILE=%t.o --check-prefixes=WARNING,GNU
 
-# WARNING:    warning: The SHT_DYNAMIC section '.dynamic' is not at the start of PT_DYNAMIC segment
+# WARNING:    warning: '[[FILE]]': The SHT_DYNAMIC section '.dynamic' is not at the start of PT_DYNAMIC segment
 
 # LLVM:      DynamicSection [ (2 entries)
 # LLVM-NEXT:   Tag                Type     Name/Value
Index: llvm/trunk/test/tools/llvm-readobj/hex-dump.test
===================================================================
--- llvm/trunk/test/tools/llvm-readobj/hex-dump.test
+++ llvm/trunk/test/tools/llvm-readobj/hex-dump.test
@@ -24,12 +24,12 @@
 # RUN: llvm-readobj -x 9 -x 9 -x .strtab -x .strtab %p/Inputs/trivial.obj.elf-x86-64 2>&1 | \
 # RUN:   FileCheck %s --check-prefix=ELF
 # RUN: llvm-readobj -x 9 -x .strtab -x 10 -x not_exist \
-# RUN:   %p/Inputs/trivial.obj.elf-x86-64 2>&1 | FileCheck %s --check-prefixes=ELF-WARN,ELF
+# RUN:   %p/Inputs/trivial.obj.elf-x86-64 2>&1 | FileCheck %s -DFILE=%p/Inputs/trivial.obj.elf-x86-64 --check-prefixes=ELF-WARN,ELF
 
 # ELF-SEC: [ 9] .strtab
 
-# ELF-WARN: warning: could not find section 'not_exist'
-# ELF-WARN: warning: could not find section 10
+# ELF-WARN: warning: '[[FILE]]': could not find section 'not_exist'
+# ELF-WARN: warning: '[[FILE]]': could not find section 10
 # ELF:      Hex dump of section '.strtab':
 # ELF-NEXT: 0x00000000 00747269 7669616c 2e6c6c00 6d61696e .trivial.ll.main
 # ELF-NEXT: 0x00000010 002e4c2e 73747200 70757473 00536f6d ..L.str.puts.Som
Index: llvm/trunk/test/tools/llvm-readobj/mips-got.test
===================================================================
--- llvm/trunk/test/tools/llvm-readobj/mips-got.test
+++ llvm/trunk/test/tools/llvm-readobj/mips-got.test
@@ -1,5 +1,5 @@
 RUN: not llvm-readobj --mips-plt-got %p/Inputs/relocs.obj.elf-mips 2>&1 | \
-RUN:   FileCheck %s -check-prefix GOT-OBJ
+RUN:   FileCheck %s -DFILE=%p/Inputs/relocs.obj.elf-mips -check-prefix GOT-OBJ
 RUN: llvm-readobj --mips-plt-got %p/Inputs/dynamic-table-exe.mips | \
 RUN:   FileCheck %s -check-prefix GOT-EXE
 RUN: llvm-readobj --mips-plt-got %p/Inputs/dynamic-table-so.mips | \
@@ -12,7 +12,7 @@
 RUN:   FileCheck %s -check-prefix GOT-STATIC
 
 RUN: not llvm-readelf --mips-plt-got %p/Inputs/relocs.obj.elf-mips 2>&1 | \
-RUN:   FileCheck %s -check-prefix GNU-GOT-OBJ
+RUN:   FileCheck %s -DFILE=%p/Inputs/relocs.obj.elf-mips -check-prefix GNU-GOT-OBJ
 RUN: llvm-readelf --mips-plt-got %p/Inputs/dynamic-table-exe.mips | \
 RUN:   FileCheck %s --strict-whitespace -check-prefix GNU-GOT-EXE
 RUN: llvm-readelf --mips-plt-got %p/Inputs/dynamic-table-so.mips | \
@@ -24,7 +24,7 @@
 RUN: llvm-readelf --mips-plt-got %p/Inputs/got-static.exe.mips | \
 RUN:   FileCheck %s --strict-whitespace -check-prefix GNU-GOT-STATIC
 
-GOT-OBJ: error: Cannot find .got section
+GOT-OBJ: error: '[[FILE]]': Cannot find .got section
 
 GOT-EXE:      Primary GOT {
 GOT-EXE-NEXT:   Canonical gp value: 0x418880
@@ -380,7 +380,7 @@
 GOT-STATIC-NEXT:   ]
 GOT-STATIC-NEXT: }
 
-GNU-GOT-OBJ: error: Cannot find .got section
+GNU-GOT-OBJ: error: '[[FILE]]': Cannot find .got section
 
 GNU-GOT-EXE:      Primary GOT:
 GNU-GOT-EXE-NEXT:  Canonical gp value: 00418880
Index: llvm/trunk/test/tools/llvm-readobj/note-core-ntfile-bad.test
===================================================================
--- llvm/trunk/test/tools/llvm-readobj/note-core-ntfile-bad.test
+++ llvm/trunk/test/tools/llvm-readobj/note-core-ntfile-bad.test
@@ -8,8 +8,8 @@
 # using the assembly shown with each test case.
 
 # RUN: yaml2obj --docnum=1 %s -o %t1.o
-# RUN: llvm-readelf -n %t1.o 2>&1 | FileCheck %s --check-prefix=ERR-HEADER-SHORT
-# ERR-HEADER-SHORT: warning: malformed note: header too short
+# RUN: llvm-readelf -n %t1.o 2>&1 | FileCheck -DFILE=%t1.o %s --check-prefix=ERR-HEADER-SHORT
+# ERR-HEADER-SHORT: warning: '[[FILE]]': malformed note: header too short
 
 # .section ".note.foo", "a"
 #       .align 4
@@ -38,8 +38,8 @@
       - Section: .note.foo
 
 # RUN: yaml2obj --docnum=2 %s -o %t2.o
-# RUN: llvm-readelf -n %t2.o 2>&1 | FileCheck %s --check-prefix=ERR-NULL-TERM
-# ERR-NULL-TERM: warning: malformed note: not NUL terminated
+# RUN: llvm-readelf -n %t2.o 2>&1 | FileCheck -DFILE=%t2.o %s --check-prefix=ERR-NULL-TERM
+# ERR-NULL-TERM: warning: '[[FILE]]': malformed note: not NUL terminated
 
 # .section ".note.foo", "a"
 #       .align 4
@@ -73,8 +73,8 @@
       - Section: .note.foo
 
 # RUN: yaml2obj --docnum=3 %s -o %t3.o
-# RUN: llvm-readelf -n %t3.o 2>&1 | FileCheck %s --check-prefix=ERR-FILE-COUNT
-# ERR-FILE-COUNT: warning: malformed note: too short for number of files
+# RUN: llvm-readelf -n %t3.o 2>&1 | FileCheck -DFILE=%t3.o %s --check-prefix=ERR-FILE-COUNT
+# ERR-FILE-COUNT: warning: '[[FILE]]': malformed note: too short for number of files
 
 # .section ".note.foo", "a"
 #       .align 4
@@ -108,8 +108,8 @@
       - Section: .note.foo
 
 # RUN: yaml2obj --docnum=4 %s -o %t4.o
-# RUN: llvm-readelf -n %t4.o 2>&1 | FileCheck %s --check-prefix=ERR-FILE-END-EARLY
-# ERR-FILE-END-EARLY: warning: malformed note: too few filenames
+# RUN: llvm-readelf -n %t4.o 2>&1 | FileCheck -DFILE=%t4.o %s --check-prefix=ERR-FILE-END-EARLY
+# ERR-FILE-END-EARLY: warning: '[[FILE]]': malformed note: too few filenames
 
 # .section ".note.foo", "a"
 #       .align 4
Index: llvm/trunk/test/tools/llvm-readobj/string-dump.test
===================================================================
--- llvm/trunk/test/tools/llvm-readobj/string-dump.test
+++ llvm/trunk/test/tools/llvm-readobj/string-dump.test
@@ -51,14 +51,14 @@
 # CHECK-NEXT: [ 3] null{{$}}
 # CHECK-NOT:  {{.}}
 
-# RUN: llvm-readobj --string-dump=does_not_exist %t 2>&1 | FileCheck %s --check-prefix=WARN1
-# RUN: llvm-readobj --string-dump=42 %t 2>&1 | FileCheck %s --check-prefix=WARN2
+# RUN: llvm-readobj --string-dump=does_not_exist %t 2>&1 | FileCheck -DFILE=%t %s --check-prefix=WARN1
+# RUN: llvm-readobj --string-dump=42 %t 2>&1 | FileCheck %s  -DFILE=%t --check-prefix=WARN2
 
-# RUN: llvm-readelf --string-dump=does_not_exist %t 2>&1 | FileCheck %s --check-prefix=WARN1
-# RUN: llvm-readelf --string-dump=42 %t 2>&1 | FileCheck %s --check-prefix=WARN2
+# RUN: llvm-readelf --string-dump=does_not_exist %t 2>&1 | FileCheck -DFILE=%t %s --check-prefix=WARN1
+# RUN: llvm-readelf --string-dump=42 %t 2>&1 | FileCheck %s  -DFILE=%t --check-prefix=WARN2
 
-# WARN1: warning: could not find section 'does_not_exist'
-# WARN2: warning: could not find section 42
+# WARN1: warning: '[[FILE]]': could not find section 'does_not_exist'
+# WARN2: warning: '[[FILE]]': could not find section 42
 
 --- !ELF
 FileHeader:
Index: llvm/trunk/tools/llvm-readobj/COFFDumper.cpp
===================================================================
--- llvm/trunk/tools/llvm-readobj/COFFDumper.cpp
+++ llvm/trunk/tools/llvm-readobj/COFFDumper.cpp
@@ -632,12 +632,14 @@
   // Print PE header. This header does not exist if this is an object file and
   // not an executable.
   const pe32_header *PEHeader = nullptr;
-  error(Obj->getPE32Header(PEHeader));
+  if (std::error_code EC = Obj->getPE32Header(PEHeader))
+    reportError(EC, Obj->getFileName());
   if (PEHeader)
     printPEHeader<pe32_header>(PEHeader);
 
   const pe32plus_header *PEPlusHeader = nullptr;
-  error(Obj->getPE32PlusHeader(PEPlusHeader));
+  if (std::error_code EC = Obj->getPE32PlusHeader(PEPlusHeader))
+    reportError(EC, Obj->getFileName());
   if (PEPlusHeader)
     printPEHeader<pe32plus_header>(PEPlusHeader);
 
@@ -732,7 +734,9 @@
     if (D.Type == COFF::IMAGE_DEBUG_TYPE_CODEVIEW) {
       const codeview::DebugInfo *DebugInfo;
       StringRef PDBFileName;
-      error(Obj->getDebugPDBInfo(&D, DebugInfo, PDBFileName));
+      if (std::error_code EC = Obj->getDebugPDBInfo(&D, DebugInfo, PDBFileName))
+        reportError(EC, Obj->getFileName());
+
       DictScope PDBScope(W, "PDBInfo");
       W.printHex("PDBSignature", DebugInfo->Signature.CVSignature);
       if (DebugInfo->Signature.CVSignature == OMF::Signature::PDB70) {
@@ -744,8 +748,9 @@
       // FIXME: Type values of 12 and 13 are commonly observed but are not in
       // the documented type enum.  Figure out what they mean.
       ArrayRef<uint8_t> RawData;
-      error(
-          Obj->getRvaAndSizeAsBytes(D.AddressOfRawData, D.SizeOfData, RawData));
+      if (std::error_code EC = Obj->getRvaAndSizeAsBytes(D.AddressOfRawData,
+                                                         D.SizeOfData, RawData))
+        reportError(EC, Obj->getFileName());
       W.printBinaryBlock("RawData", RawData);
     }
   }
@@ -754,8 +759,11 @@
 void COFFDumper::printRVATable(uint64_t TableVA, uint64_t Count,
                                uint64_t EntrySize, PrintExtraCB PrintExtra) {
   uintptr_t TableStart, TableEnd;
-  error(Obj->getVaPtr(TableVA, TableStart));
-  error(Obj->getVaPtr(TableVA + Count * EntrySize - 1, TableEnd));
+  if (std::error_code EC = Obj->getVaPtr(TableVA, TableStart))
+    reportError(EC, Obj->getFileName());
+  if (std::error_code EC =
+          Obj->getVaPtr(TableVA + Count * EntrySize - 1, TableEnd))
+    reportError(EC, Obj->getFileName());
   TableEnd++;
   for (uintptr_t I = TableStart; I < TableEnd; I += EntrySize) {
     uint32_t RVA = *reinterpret_cast<const ulittle32_t *>(I);
@@ -959,7 +967,7 @@
 
   W.printHex("Magic", Magic);
   if (Magic != COFF::DEBUG_SECTION_MAGIC)
-    return error(object_error::parse_failed);
+    reportError(object_error::parse_failed, Obj->getFileName());
 
   BinaryStreamReader FSReader(Data, support::little);
   initializeFileAndStringTables(FSReader);
@@ -985,7 +993,7 @@
 
     // Get the contents of the subsection.
     if (SubSectionSize > Data.size())
-      return error(object_error::parse_failed);
+      return reportError(object_error::parse_failed, Obj->getFileName());
     StringRef Contents = Data.substr(0, SubSectionSize);
 
     // Add SubSectionSize to the current offset and align that offset to find
@@ -994,7 +1002,7 @@
     size_t NextOffset = SectionOffset + SubSectionSize;
     NextOffset = alignTo(NextOffset, 4);
     if (NextOffset > SectionContents.size())
-      return error(object_error::parse_failed);
+      return reportError(object_error::parse_failed, Obj->getFileName());
     Data = SectionContents.drop_front(NextOffset);
 
     // Optionally print the subsection bytes in case our parsing gets confused
@@ -1024,17 +1032,19 @@
       if (SubSectionSize < 12) {
         // There should be at least three words to store two function
         // relocations and size of the code.
-        error(object_error::parse_failed);
+        reportError(object_error::parse_failed, Obj->getFileName());
         return;
       }
 
       StringRef LinkageName;
-      error(resolveSymbolName(Obj->getCOFFSection(Section), SectionOffset,
-                              LinkageName));
+      if (std::error_code EC = resolveSymbolName(Obj->getCOFFSection(Section),
+                                                 SectionOffset, LinkageName))
+        reportError(EC, Obj->getFileName());
+
       W.printString("LinkageName", LinkageName);
       if (FunctionLineTables.count(LinkageName) != 0) {
         // Saw debug info for this function already?
-        error(object_error::parse_failed);
+        reportError(object_error::parse_failed, Obj->getFileName());
         return;
       }
 
@@ -1051,8 +1061,10 @@
         reportError(std::move(E), Obj->getFileName());
 
       StringRef LinkageName;
-      error(resolveSymbolName(Obj->getCOFFSection(Section), SectionContents,
-                              FrameData.getRelocPtr(), LinkageName));
+      if (std::error_code EC =
+              resolveSymbolName(Obj->getCOFFSection(Section), SectionContents,
+                                FrameData.getRelocPtr(), LinkageName))
+        reportError(EC, Obj->getFileName());
       W.printString("LinkageName", LinkageName);
 
       // To find the active frame description, search this array for the
@@ -1122,7 +1134,7 @@
       uint32_t ColumnIndex = 0;
       for (const auto &Line : Entry.LineNumbers) {
         if (Line.Offset >= LineInfo.header()->CodeSize) {
-          error(object_error::parse_failed);
+          reportError(object_error::parse_failed, Obj->getFileName());
           return;
         }
 
@@ -1159,10 +1171,9 @@
                       CompilationCPUType, opts::CodeViewSubsectionBytes);
   CVSymbolArray Symbols;
   BinaryStreamReader Reader(BinaryData, llvm::support::little);
-  if (auto EC = Reader.readArray(Symbols, Reader.getLength())) {
-    consumeError(std::move(EC));
+  if (Error E = Reader.readArray(Symbols, Reader.getLength())) {
     W.flush();
-    error(object_error::parse_failed);
+    reportError(std::move(E), Obj->getFileName());
   }
 
   if (Error E = CVSD.dump(Symbols)) {
@@ -1218,13 +1229,13 @@
 StringRef COFFDumper::getFileNameForFileOffset(uint32_t FileOffset) {
   // The file checksum subsection should precede all references to it.
   if (!CVFileChecksumTable.valid() || !CVStringTable.valid())
-    error(object_error::parse_failed);
+    reportError(object_error::parse_failed, Obj->getFileName());
 
   auto Iter = CVFileChecksumTable.getArray().at(FileOffset);
 
   // Check if the file checksum table offset is valid.
   if (Iter == CVFileChecksumTable.end())
-    error(object_error::parse_failed);
+    reportError(object_error::parse_failed, Obj->getFileName());
 
   return unwrapOrError(Obj->getFileName(),
                        CVStringTable.getString(Iter->FileNameOffset));
@@ -1248,14 +1259,14 @@
         reportError(std::move(E), Obj->getFileName());
 
       if (Magic != 4)
-        error(object_error::parse_failed);
+        reportError(object_error::parse_failed, Obj->getFileName());
 
       CVTypeArray Types;
       BinaryStreamReader Reader(Data, llvm::support::little);
       if (auto EC = Reader.readArray(Types, Reader.getLength())) {
         consumeError(std::move(EC));
         W.flush();
-        error(object_error::parse_failed);
+        reportError(object_error::parse_failed, Obj->getFileName());
       }
       SmallVector<TypeIndex, 128> SourceToDest;
       Optional<uint32_t> PCHSignature;
@@ -1290,7 +1301,7 @@
 
   W.printHex("Magic", Magic);
   if (Magic != COFF::DEBUG_SECTION_MAGIC)
-    return error(object_error::parse_failed);
+    reportError(object_error::parse_failed, Obj->getFileName());
 
   Types.reset(Data, 100);
 
@@ -1386,7 +1397,9 @@
   int64_t SymbolIndex = -1;
   if (Symbol != Obj->symbol_end()) {
     Expected<StringRef> SymbolNameOrErr = Symbol->getName();
-    error(errorToErrorCode(SymbolNameOrErr.takeError()));
+    if (!SymbolNameOrErr)
+      reportError(SymbolNameOrErr.takeError(), Obj->getFileName());
+
     SymbolName = *SymbolNameOrErr;
     SymbolIndex = Obj->getSymbolIndex(Obj->getCOFFSymbol(*Symbol));
   }
@@ -1463,7 +1476,8 @@
   for (uint8_t I = 0; I < Symbol.getNumberOfAuxSymbols(); ++I) {
     if (Symbol.isFunctionDefinition()) {
       const coff_aux_function_definition *Aux;
-      error(getSymbolAuxData(Obj, Symbol, I, Aux));
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, Aux))
+        reportError(EC, Obj->getFileName());
 
       DictScope AS(W, "AuxFunctionDef");
       W.printNumber("TagIndex", Aux->TagIndex);
@@ -1473,14 +1487,15 @@
 
     } else if (Symbol.isAnyUndefined()) {
       const coff_aux_weak_external *Aux;
-      error(getSymbolAuxData(Obj, Symbol, I, Aux));
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, Aux))
+        reportError(EC, Obj->getFileName());
 
       Expected<COFFSymbolRef> Linked = Obj->getSymbol(Aux->TagIndex);
       StringRef LinkedName;
       std::error_code EC = errorToErrorCode(Linked.takeError());
       if (EC || (EC = Obj->getSymbolName(*Linked, LinkedName))) {
         LinkedName = "";
-        error(EC);
+        reportError(EC, Obj->getFileName());
       }
 
       DictScope AS(W, "AuxWeakExternal");
@@ -1490,8 +1505,8 @@
 
     } else if (Symbol.isFileRecord()) {
       const char *FileName;
-      error(getSymbolAuxData(Obj, Symbol, I, FileName));
-
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, FileName))
+        reportError(EC, Obj->getFileName());
       DictScope AS(W, "AuxFileRecord");
 
       StringRef Name(FileName, Symbol.getNumberOfAuxSymbols() *
@@ -1500,7 +1515,8 @@
       break;
     } else if (Symbol.isSectionDefinition()) {
       const coff_aux_section_definition *Aux;
-      error(getSymbolAuxData(Obj, Symbol, I, Aux));
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, Aux))
+        reportError(EC, Obj->getFileName());
 
       int32_t AuxNumber = Aux->getNumber(Symbol.isBigObj());
 
@@ -1517,7 +1533,7 @@
         const coff_section *Assoc;
         StringRef AssocName = "";
         if (std::error_code EC = Obj->getSection(AuxNumber, Assoc))
-          error(EC);
+          reportError(EC, Obj->getFileName());
         Expected<StringRef> Res = getSectionName(Obj, AuxNumber, Assoc);
         if (!Res)
           reportError(Res.takeError(), Obj->getFileName());
@@ -1527,7 +1543,8 @@
       }
     } else if (Symbol.isCLRToken()) {
       const coff_aux_clr_token *Aux;
-      error(getSymbolAuxData(Obj, Symbol, I, Aux));
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, Aux))
+        reportError(EC, Obj->getFileName());
 
       Expected<COFFSymbolRef> ReferredSym =
           Obj->getSymbol(Aux->SymbolTableIndex);
@@ -1535,7 +1552,7 @@
       std::error_code EC = errorToErrorCode(ReferredSym.takeError());
       if (EC || (EC = Obj->getSymbolName(*ReferredSym, ReferredName))) {
         ReferredName = "";
-        error(EC);
+        reportError(EC, Obj->getFileName());
       }
 
       DictScope AS(W, "AuxCLRToken");
@@ -1602,9 +1619,11 @@
     iterator_range<imported_symbol_iterator> Range) {
   for (const ImportedSymbolRef &I : Range) {
     StringRef Sym;
-    error(I.getSymbolName(Sym));
+    if (std::error_code EC = I.getSymbolName(Sym))
+      reportError(EC, Obj->getFileName());
     uint16_t Ordinal;
-    error(I.getOrdinal(Ordinal));
+    if (std::error_code EC = I.getOrdinal(Ordinal))
+      reportError(EC, Obj->getFileName());
     W.printNumber("Symbol", Sym, Ordinal);
   }
 }
@@ -1616,12 +1635,17 @@
   for (const ImportedSymbolRef &S : Range) {
     DictScope Import(W, "Import");
     StringRef Sym;
-    error(S.getSymbolName(Sym));
+    if (std::error_code EC = S.getSymbolName(Sym))
+      reportError(EC, Obj->getFileName());
+
     uint16_t Ordinal;
-    error(S.getOrdinal(Ordinal));
+    if (std::error_code EC = S.getOrdinal(Ordinal))
+      reportError(EC, Obj->getFileName());
     W.printNumber("Symbol", Sym, Ordinal);
+
     uint64_t Addr;
-    error(I.getImportAddress(Index++, Addr));
+    if (std::error_code EC = I.getImportAddress(Index++, Addr))
+      reportError(EC, Obj->getFileName());
     W.printHex("Address", Addr);
   }
 }
@@ -1631,13 +1655,16 @@
   for (const ImportDirectoryEntryRef &I : Obj->import_directories()) {
     DictScope Import(W, "Import");
     StringRef Name;
-    error(I.getName(Name));
+    if (std::error_code EC = I.getName(Name))
+      reportError(EC, Obj->getFileName());
     W.printString("Name", Name);
     uint32_t ILTAddr;
-    error(I.getImportLookupTableRVA(ILTAddr));
+    if (std::error_code EC = I.getImportLookupTableRVA(ILTAddr))
+      reportError(EC, Obj->getFileName());
     W.printHex("ImportLookupTableRVA", ILTAddr);
     uint32_t IATAddr;
-    error(I.getImportAddressTableRVA(IATAddr));
+    if (std::error_code EC = I.getImportAddressTableRVA(IATAddr))
+      reportError(EC, Obj->getFileName());
     W.printHex("ImportAddressTableRVA", IATAddr);
     // The import lookup table can be missing with certain older linkers, so
     // fall back to the import address table in that case.
@@ -1651,10 +1678,12 @@
   for (const DelayImportDirectoryEntryRef &I : Obj->delay_import_directories()) {
     DictScope Import(W, "DelayImport");
     StringRef Name;
-    error(I.getName(Name));
+    if (std::error_code EC = I.getName(Name))
+      reportError(EC, Obj->getFileName());
     W.printString("Name", Name);
     const delay_import_directory_table_entry *Table;
-    error(I.getDelayImportTable(Table));
+    if (std::error_code EC = I.getDelayImportTable(Table))
+      reportError(EC, Obj->getFileName());
     W.printHex("Attributes", Table->Attributes);
     W.printHex("ModuleHandle", Table->ModuleHandle);
     W.printHex("ImportAddressTable", Table->DelayImportAddressTable);
@@ -1672,9 +1701,12 @@
     StringRef Name;
     uint32_t Ordinal, RVA;
 
-    error(E.getSymbolName(Name));
-    error(E.getOrdinal(Ordinal));
-    error(E.getExportRVA(RVA));
+    if (std::error_code EC = E.getSymbolName(Name))
+      reportError(EC, Obj->getFileName());
+    if (std::error_code EC = E.getOrdinal(Ordinal))
+      reportError(EC, Obj->getFileName());
+    if (std::error_code EC = E.getExportRVA(RVA))
+      reportError(EC, Obj->getFileName());
 
     W.printNumber("Ordinal", Ordinal);
     W.printString("Name", Name);
@@ -1712,8 +1744,10 @@
   for (const BaseRelocRef &I : Obj->base_relocs()) {
     uint8_t Type;
     uint32_t RVA;
-    error(I.getRVA(RVA));
-    error(I.getType(Type));
+    if (std::error_code EC = I.getRVA(RVA))
+      reportError(EC, Obj->getFileName());
+    if (std::error_code EC = I.getType(Type))
+      reportError(EC, Obj->getFileName());
     DictScope Import(W, "Entry");
     W.printString("Type", getBaseRelocTypeName(Type));
     W.printHex("Address", RVA);
@@ -1797,7 +1831,7 @@
       }
       std::string EntryNameString;
       if (!llvm::convertUTF16ToUTF8String(RawEntryNameString, EntryNameString))
-        error(object_error::parse_failed);
+        reportError(object_error::parse_failed, Obj->getFileName());
       OS << ": ";
       OS << EntryNameString;
     } else {
@@ -1905,14 +1939,14 @@
     const char *Err;
     uint64_t SymIndex = decodeULEB128(Cur, &Size, End, &Err);
     if (Err)
-      reportError(Err);
+      reportError(createError(Err), Obj->getFileName());
 
     Expected<COFFSymbolRef> Sym = Obj->getSymbol(SymIndex);
     StringRef SymName;
     std::error_code EC = errorToErrorCode(Sym.takeError());
     if (EC || (EC = Obj->getSymbolName(*Sym, SymName))) {
       SymName = "";
-      error(EC);
+      reportError(EC, Obj->getFileName());
     }
 
     W.printNumber("Sym", SymName, SymIndex);
Index: llvm/trunk/tools/llvm-readobj/DwarfCFIEHPrinter.h
===================================================================
--- llvm/trunk/tools/llvm-readobj/DwarfCFIEHPrinter.h
+++ llvm/trunk/tools/llvm-readobj/DwarfCFIEHPrinter.h
@@ -44,12 +44,12 @@
   void printUnwindInformation() const;
 };
 
-template <class ELFO>
-static const typename ELFO::Elf_Shdr *findSectionByAddress(const ELFO *Obj,
-                                                           uint64_t Addr) {
-  auto Sections = Obj->sections();
+template <class ELFT>
+static const typename object::ELFObjectFile<ELFT>::Elf_Shdr *
+findSectionByAddress(const object::ELFObjectFile<ELFT> *ObjF, uint64_t Addr) {
+  auto Sections = ObjF->getELFFile()->sections();
   if (Error E = Sections.takeError())
-    reportError(toString(std::move(E)));
+    reportError(std::move(E), ObjF->getFileName());
 
   for (const auto &Shdr : *Sections)
     if (Shdr.sh_addr == Addr)
@@ -64,13 +64,15 @@
 
   auto PHs = Obj->program_headers();
   if (Error E = PHs.takeError())
-    reportError(toString(std::move(E)));
+    reportError(std::move(E), ObjF->getFileName());
 
   for (const auto &Phdr : *PHs) {
     if (Phdr.p_type == ELF::PT_GNU_EH_FRAME) {
       EHFramePhdr = &Phdr;
       if (Phdr.p_memsz != Phdr.p_filesz)
-        reportError("p_memsz does not match p_filesz for GNU_EH_FRAME");
+        reportError(object::createError(
+                        "p_memsz does not match p_filesz for GNU_EH_FRAME"),
+                    ObjF->getFileName());
       break;
     }
   }
@@ -81,12 +83,12 @@
 
   auto Sections = Obj->sections();
   if (Error E = Sections.takeError())
-    reportError(toString(std::move(E)));
+    reportError(std::move(E), ObjF->getFileName());
 
   for (const auto &Shdr : *Sections) {
     auto SectionName = Obj->getSectionName(&Shdr);
     if (Error E = SectionName.takeError())
-      reportError(toString(std::move(E)));
+      reportError(std::move(E), ObjF->getFileName());
 
     if (*SectionName == ".eh_frame")
       printEHFrame(&Shdr);
@@ -103,11 +105,11 @@
   W.startLine() << format("Size: 0x%" PRIx64 "\n", EHFrameHdrSize);
 
   const object::ELFFile<ELFT> *Obj = ObjF->getELFFile();
-  const auto *EHFrameHdrShdr = findSectionByAddress(Obj, EHFrameHdrAddress);
+  const auto *EHFrameHdrShdr = findSectionByAddress(ObjF, EHFrameHdrAddress);
   if (EHFrameHdrShdr) {
     auto SectionName = Obj->getSectionName(EHFrameHdrShdr);
     if (Error E = SectionName.takeError())
-      reportError(toString(std::move(E)));
+      reportError(std::move(E), ObjF->getFileName());
 
     W.printString("Corresponding Section", *SectionName);
   }
@@ -124,22 +126,27 @@
   auto Version = DE.getU8(&Offset);
   W.printNumber("version", Version);
   if (Version != 1)
-    reportError("only version 1 of .eh_frame_hdr is supported");
+    reportError(
+        object::createError("only version 1 of .eh_frame_hdr is supported"),
+        ObjF->getFileName());
 
   uint64_t EHFramePtrEnc = DE.getU8(&Offset);
   W.startLine() << format("eh_frame_ptr_enc: 0x%" PRIx64 "\n", EHFramePtrEnc);
   if (EHFramePtrEnc != (dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4))
-    reportError("unexpected encoding eh_frame_ptr_enc");
+    reportError(object::createError("unexpected encoding eh_frame_ptr_enc"),
+                ObjF->getFileName());
 
   uint64_t FDECountEnc = DE.getU8(&Offset);
   W.startLine() << format("fde_count_enc: 0x%" PRIx64 "\n", FDECountEnc);
   if (FDECountEnc != dwarf::DW_EH_PE_udata4)
-    reportError("unexpected encoding fde_count_enc");
+    reportError(object::createError("unexpected encoding fde_count_enc"),
+                ObjF->getFileName());
 
   uint64_t TableEnc = DE.getU8(&Offset);
   W.startLine() << format("table_enc: 0x%" PRIx64 "\n", TableEnc);
   if (TableEnc != (dwarf::DW_EH_PE_datarel | dwarf::DW_EH_PE_sdata4))
-    reportError("unexpected encoding table_enc");
+    reportError(object::createError("unexpected encoding table_enc"),
+                ObjF->getFileName());
 
   auto EHFramePtr = DE.getSigned(&Offset, 4) + EHFrameHdrAddress + 4;
   W.startLine() << format("eh_frame_ptr: 0x%" PRIx64 "\n", EHFramePtr);
@@ -158,7 +165,8 @@
     W.startLine() << format("address: 0x%" PRIx64 "\n", Address);
 
     if (InitialPC < PrevPC)
-      reportError("initial_location is out of order");
+      reportError(object::createError("initial_location is out of order"),
+                  ObjF->getFileName());
 
     PrevPC = InitialPC;
     ++NumEntries;
@@ -178,7 +186,7 @@
   const object::ELFFile<ELFT> *Obj = ObjF->getELFFile();
   auto Result = Obj->getSectionContents(EHFrameShdr);
   if (Error E = Result.takeError())
-    reportError(toString(std::move(E)));
+    reportError(std::move(E), ObjF->getFileName());
 
   auto Contents = Result.get();
   DWARFDataExtractor DE(
Index: llvm/trunk/tools/llvm-readobj/ELFDumper.cpp
===================================================================
--- llvm/trunk/tools/llvm-readobj/ELFDumper.cpp
+++ llvm/trunk/tools/llvm-readobj/ELFDumper.cpp
@@ -122,9 +122,9 @@
 /// the size, entity size and virtual address are different entries in arbitrary
 /// order (DT_REL, DT_RELSZ, DT_RELENT for example).
 struct DynRegionInfo {
-  DynRegionInfo() = default;
-  DynRegionInfo(const void *A, uint64_t S, uint64_t ES)
-      : Addr(A), Size(S), EntSize(ES) {}
+  DynRegionInfo(StringRef ObjName) : FileName(ObjName) {}
+  DynRegionInfo(const void *A, uint64_t S, uint64_t ES, StringRef ObjName)
+      : Addr(A), Size(S), EntSize(ES), FileName(ObjName) {}
 
   /// Address in current address space.
   const void *Addr = nullptr;
@@ -133,14 +133,18 @@
   /// Size of each entity in the region.
   uint64_t EntSize = 0;
 
+  /// Name of the file. Used for error reporting.
+  StringRef FileName;
+
   template <typename Type> ArrayRef<Type> getAsArrayRef() const {
     const Type *Start = reinterpret_cast<const Type *>(Addr);
     if (!Start)
       return {Start, Start};
     if (EntSize != sizeof(Type) || Size % EntSize) {
       // TODO: Add a section index to this warning.
-      reportWarning("invalid section size (" + Twine(Size) +
-                    ") or entity size (" + Twine(EntSize) + ")");
+      reportWarning(createError("invalid section size (" + Twine(Size) +
+                                ") or entity size (" + Twine(EntSize) + ")"),
+                    FileName);
       return {Start, Start};
     }
     return {Start, Start + (Size / EntSize)};
@@ -199,18 +203,19 @@
     if (DRI.Addr < Obj->base() ||
         reinterpret_cast<const uint8_t *>(DRI.Addr) + DRI.Size >
             Obj->base() + Obj->getBufSize())
-      error(llvm::object::object_error::parse_failed);
+      reportError(llvm::object::object_error::parse_failed,
+                  ObjF->getFileName());
     return DRI;
   }
 
   DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) {
-    return checkDRI(
-        {ObjF->getELFFile()->base() + P->p_offset, P->p_filesz, EntSize});
+    return checkDRI({ObjF->getELFFile()->base() + P->p_offset, P->p_filesz,
+                     EntSize, ObjF->getFileName()});
   }
 
   DynRegionInfo createDRIFrom(const Elf_Shdr *S) {
-    return checkDRI(
-        {ObjF->getELFFile()->base() + S->sh_offset, S->sh_size, S->sh_entsize});
+    return checkDRI({ObjF->getELFFile()->base() + S->sh_offset, S->sh_size,
+                     S->sh_entsize, ObjF->getFileName()});
   }
 
   void loadDynamicTable(const ELFFile<ELFT> *Obj);
@@ -362,7 +367,7 @@
     // It does not print the same warning more than once.
     WarningHandler = [this](const Twine &Msg) {
       if (Warnings.insert(Msg.str()).second)
-        reportWarning(FileName, createError(Msg));
+        reportWarning(createError(Msg), FileName);
       return Error::success();
     };
   }
@@ -740,7 +745,7 @@
   Elf_Sym_Range Syms =
       unwrapOrError(ObjF->getFileName(), Obj->symbols(DotSymtabSec));
   if (Index >= Syms.size())
-    reportError("Invalid symbol index");
+    reportError(createError("Invalid symbol index"), ObjF->getFileName());
   const Elf_Sym *Sym = &Syms[Index];
   return maybeDemangle(
       unwrapOrError(ObjF->getFileName(), Sym->getName(StrTable)));
@@ -761,7 +766,7 @@
   // Lookup this symbol in the version table.
   LoadVersionMap();
   if (VersionIndex >= VersionMap.size() || VersionMap[VersionIndex].isNull())
-    reportError("Invalid version entry");
+    reportError(createError("Invalid version entry"), ObjF->getFileName());
   const VersionMapEntry &Entry = VersionMap[VersionIndex];
 
   // Get the version name string.
@@ -775,7 +780,7 @@
     IsDefault = false;
   }
   if (NameOffset >= StrTab.size())
-    reportError("Invalid string offset");
+    reportError(createError("Invalid string offset"), ObjF->getFileName());
   return StrTab.data() + NameOffset;
 }
 
@@ -1428,8 +1433,9 @@
   // This allows us to dump the dynamic sections with a broken sh_entsize
   // field.
   if (DynamicSec) {
-    DynamicTable = checkDRI({ObjF->getELFFile()->base() + DynamicSec->sh_offset,
-                             DynamicSec->sh_size, sizeof(Elf_Dyn)});
+    DynamicTable =
+        checkDRI({ObjF->getELFFile()->base() + DynamicSec->sh_offset,
+                  DynamicSec->sh_size, sizeof(Elf_Dyn), ObjF->getFileName()});
     parseDynamicTable();
   }
 
@@ -1441,7 +1447,9 @@
   if (DynamicPhdr->p_offset + DynamicPhdr->p_filesz >
       ObjF->getMemoryBufferRef().getBufferSize()) {
     reportWarning(
-        "PT_DYNAMIC segment offset + size exceeds the size of the file");
+        createError(
+            "PT_DYNAMIC segment offset + size exceeds the size of the file"),
+        ObjF->getFileName());
     return;
   }
 
@@ -1456,22 +1464,26 @@
   if (DynamicSec->sh_addr + DynamicSec->sh_size >
           DynamicPhdr->p_vaddr + DynamicPhdr->p_memsz ||
       DynamicSec->sh_addr < DynamicPhdr->p_vaddr)
-    reportWarning("The SHT_DYNAMIC section '" + Name +
-                  "' is not contained within the "
-                  "PT_DYNAMIC segment");
+    reportWarning(createError("The SHT_DYNAMIC section '" + Name +
+                              "' is not contained within the "
+                              "PT_DYNAMIC segment"),
+                  ObjF->getFileName());
 
   if (DynamicSec->sh_addr != DynamicPhdr->p_vaddr)
-    reportWarning("The SHT_DYNAMIC section '" + Name +
-                  "' is not at the start of "
-                  "PT_DYNAMIC segment");
+    reportWarning(createError("The SHT_DYNAMIC section '" + Name +
+                              "' is not at the start of "
+                              "PT_DYNAMIC segment"),
+                  ObjF->getFileName());
 }
 
 template <typename ELFT>
 ELFDumper<ELFT>::ELFDumper(const object::ELFObjectFile<ELFT> *ObjF,
-    ScopedPrinter &Writer)
-    : ObjDumper(Writer), ObjF(ObjF) {
+                           ScopedPrinter &Writer)
+    : ObjDumper(Writer), ObjF(ObjF), DynRelRegion(ObjF->getFileName()),
+      DynRelaRegion(ObjF->getFileName()), DynRelrRegion(ObjF->getFileName()),
+      DynPLTRelRegion(ObjF->getFileName()), DynSymRegion(ObjF->getFileName()),
+      DynamicTable(ObjF->getFileName()) {
   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
-
   for (const Elf_Shdr &Sec :
        unwrapOrError(ObjF->getFileName(), Obj->sections())) {
     switch (Sec.sh_type) {
@@ -1490,7 +1502,7 @@
         if (Expected<StringRef> E = Obj->getStringTableForSymtab(Sec))
           DynamicStringTable = *E;
         else
-          warn(E.takeError());
+          reportWarning(E.takeError(), ObjF->getFileName());
       }
       break;
     case ELF::SHT_SYMTAB_SHNDX:
@@ -1599,10 +1611,13 @@
   auto toMappedAddr = [&](uint64_t Tag, uint64_t VAddr) -> const uint8_t * {
     auto MappedAddrOrError = ObjF->getELFFile()->toMappedAddr(VAddr);
     if (!MappedAddrOrError) {
-      reportWarning("Unable to parse DT_" +
-                    Twine(getTypeString(
-                        ObjF->getELFFile()->getHeader()->e_machine, Tag)) +
-                    ": " + llvm::toString(MappedAddrOrError.takeError()));
+      Error Err =
+          createError("Unable to parse DT_" +
+                      Twine(getTypeString(
+                          ObjF->getELFFile()->getHeader()->e_machine, Tag)) +
+                      ": " + llvm::toString(MappedAddrOrError.takeError()));
+
+      reportWarning(std::move(Err), ObjF->getFileName());
       return nullptr;
     }
     return MappedAddrOrError.get();
@@ -1671,8 +1686,9 @@
       else if (Dyn.getVal() == DT_RELA)
         DynPLTRelRegion.EntSize = sizeof(Elf_Rela);
       else
-        reportError(Twine("unknown DT_PLTREL value of ") +
-                    Twine((uint64_t)Dyn.getVal()));
+        reportError(createError(Twine("unknown DT_PLTREL value of ") +
+                                Twine((uint64_t)Dyn.getVal())),
+                    ObjF->getFileName());
       break;
     case ELF::DT_JMPREL:
       DynPLTRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
@@ -2094,7 +2110,7 @@
   Elf_Sym_Range Syms = dynamic_symbols();
   unsigned NumSyms = std::distance(Syms.begin(), Syms.end());
   if (!NumSyms)
-    reportError("No dynamic symbol section");
+    reportError(createError("No dynamic symbol section"), ObjF->getFileName());
   W.printHexList("Values", GnuHashTable->values(NumSyms));
 }
 
@@ -2207,7 +2223,7 @@
   if (IsStatic) {
     GotSec = findSectionByName(*Obj, FileName, ".got");
     if (!GotSec)
-      reportError("Cannot find .got section");
+      reportError(createError("Cannot find .got section"), FileName);
 
     ArrayRef<uint8_t> Content =
         unwrapOrError(FileName, Obj->getSectionContents(GotSec));
@@ -2254,12 +2270,15 @@
 
     size_t DynSymTotal = DynSyms.size();
     if (*DtGotSym > DynSymTotal)
-      reportError("MIPS_GOTSYM exceeds a number of dynamic symbols");
+      reportError(
+          createError("MIPS_GOTSYM exceeds a number of dynamic symbols"),
+          FileName);
 
     GotSec = findNotEmptySectionByAddress(Obj, FileName, *DtPltGot);
     if (!GotSec)
-      reportError("There is no not empty GOT section at 0x" +
-                  Twine::utohexstr(*DtPltGot));
+      reportError(createError("There is no not empty GOT section at 0x" +
+                              Twine::utohexstr(*DtPltGot)),
+                  FileName);
 
     LocalNum = *DtLocalGotNum;
     GlobalNum = DynSymTotal - *DtGotSym;
@@ -2409,7 +2428,8 @@
 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
   if (Obj->getHeader()->e_machine != EM_MIPS)
-    reportError("MIPS PLT GOT is available for MIPS targets only");
+    reportError(createError("MIPS PLT GOT is available for MIPS targets only"),
+                ObjF->getFileName());
 
   MipsGOTParser<ELFT> Parser(Obj, ObjF->getFileName(), dynamic_table(),
                              dynamic_symbols());
@@ -4492,7 +4512,7 @@
         if (Note)
           printCoreNote<ELFT>(OS, *Note);
         else
-          warn(Note.takeError());
+          reportWarning(Note.takeError(), this->FileName);
       }
     } else if (!Descriptor.empty()) {
       OS << "   description data:";
@@ -4556,7 +4576,6 @@
     }
   }
 
-  StringRef FileStr = Obj->getFileName();
   std::string FuncName = "?";
   // A valid SymbolRef has a non-null object file pointer.
   if (FuncSym.BasicSymbolRef::getObject()) {
@@ -4566,9 +4585,11 @@
       FuncName = maybeDemangle(*FuncNameOrErr);
     else
       consumeError(FuncNameOrErr.takeError());
-  } else
-    reportWarning(" '" + FileStr +
-                  "': could not identify function symbol for stack size entry");
+  } else {
+    reportWarning(
+        createError("could not identify function symbol for stack size entry"),
+        Obj->getFileName());
+  }
 
   // Extract the size. The expectation is that Offset is pointing to the right
   // place, i.e. past the function address.
@@ -4581,7 +4602,7 @@
         createStringError(object_error::parse_failed,
                           "could not extract a valid stack size in section %s",
                           SectionName.data()),
-        FileStr);
+        Obj->getFileName());
 
   printStackSizeEntry(StackSize, FuncName);
 }
@@ -4619,13 +4640,14 @@
 
     auto SectionOrErr = RelocSym->getSection();
     if (!SectionOrErr) {
-      reportWarning(" '" + FileStr +
-                    "': cannot identify the section for relocation symbol " +
-                    SymName);
-      consumeError(SectionOrErr.takeError());
+      reportWarning(
+          createError("cannot identify the section for relocation symbol " +
+                      SymName),
+          FileStr);
     } else if (*SectionOrErr != FunctionSec) {
-      reportWarning(" '" + FileStr + "': relocation symbol " + SymName +
-                    " is not in the expected section");
+      reportWarning(createError("relocation symbol " + SymName +
+                                " is not in the expected section"),
+                    FileStr);
       // Pretend that the symbol is in the correct section and report its
       // stack size anyway.
       FunctionSec = **SectionOrErr;
@@ -4713,7 +4735,7 @@
 void DumpStyle<ELFT>::printRelocatableStackSizes(
     const ELFObjectFile<ELFT> *Obj, std::function<void()> PrintHeader) {
   const ELFFile<ELFT> *EF = Obj->getELFFile();
-  StringRef FileStr = Obj->getFileName();
+
   // Build a map between stack size sections and their corresponding relocation
   // sections.
   llvm::MapVector<SectionRef, SectionRef> StackSizeRelocMap;
@@ -4768,9 +4790,10 @@
       consumeError(NameOrErr.takeError());
 
     if (RelocSec == NullSection) {
-      reportWarning(" '" + FileStr + "': section " + StackSizeSectionName +
-                    " does not have a corresponding "
-                    "relocation section");
+      reportWarning(createError("section " + StackSizeSectionName +
+                                " does not have a corresponding "
+                                "relocation section"),
+                    Obj->getFileName());
       continue;
     }
 
@@ -4805,7 +4828,7 @@
             createStringError(object_error::parse_failed,
                               "unsupported relocation type in section %s: %s",
                               RelocSectionName.data(), RelocName.data()),
-            FileStr);
+            Obj->getFileName());
       }
       this->printStackSize(Obj, Reloc, FunctionSec, StackSizeSectionName,
                            Resolver, Data);
@@ -5225,9 +5248,10 @@
             this->FileName,
             Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable()));
         if (SymSec == &Sec)
-          printSymbol(Obj, &Sym,
+          printSymbol(
+              Obj, &Sym,
               unwrapOrError(this->FileName, Obj->symbols(Symtab)).begin(),
-                      StrTable, false);
+              StrTable, false);
       }
     }
 
@@ -5587,7 +5611,8 @@
     const char *Err;
     uint64_t SymIndex = decodeULEB128(Cur, &Size, End, &Err);
     if (Err)
-      reportError(Err);
+      reportError(createError(Err), this->FileName);
+
     W.printNumber("Sym", this->dumper()->getStaticSymbolName(SymIndex),
                   SymIndex);
     Cur += Size;
@@ -5696,7 +5721,7 @@
         if (Note)
           printCoreNoteLLVMStyle(*Note, W);
         else
-          warn(Note.takeError());
+          reportWarning(Note.takeError(), this->FileName);
       }
     } else if (!Descriptor.empty()) {
       W.printBinaryBlock("Description data", Descriptor);
Index: llvm/trunk/tools/llvm-readobj/MachODumper.cpp
===================================================================
--- llvm/trunk/tools/llvm-readobj/MachODumper.cpp
+++ llvm/trunk/tools/llvm-readobj/MachODumper.cpp
@@ -556,7 +556,7 @@
     if (Symbol != Obj->symbol_end()) {
       Expected<StringRef> TargetNameOrErr = Symbol->getName();
       if (!TargetNameOrErr)
-        error(errorToErrorCode(TargetNameOrErr.takeError()));
+        reportError(TargetNameOrErr.takeError(), Obj->getFileName());
       TargetName = *TargetNameOrErr;
     }
   } else if (!IsScattered) {
@@ -630,7 +630,9 @@
 
   StringRef SectionName = "";
   Expected<section_iterator> SecIOrErr = Symbol.getSection();
-  error(errorToErrorCode(SecIOrErr.takeError()));
+  if (!SecIOrErr)
+    reportError(SecIOrErr.takeError(), Obj->getFileName());
+
   section_iterator SecI = *SecIOrErr;
   if (SecI != Obj->section_end())
     SectionName = unwrapOrError(Obj->getFileName(), SecI->getName());
Index: llvm/trunk/tools/llvm-readobj/ObjDumper.cpp
===================================================================
--- llvm/trunk/tools/llvm-readobj/ObjDumper.cpp
+++ llvm/trunk/tools/llvm-readobj/ObjDumper.cpp
@@ -23,6 +23,10 @@
 
 namespace llvm {
 
+static inline Error createError(const Twine &Msg) {
+  return createStringError(object::object_error::parse_failed, Msg);
+}
+
 ObjDumper::ObjDumper(ScopedPrinter &Writer) : W(Writer) {}
 
 ObjDumper::~ObjDumper() {
@@ -63,10 +67,15 @@
 
   for (const std::pair<std::string, bool> &S : SecNames)
     if (!S.second)
-      reportWarning(formatv("could not find section '{0}'", S.first).str());
+      reportWarning(
+          createError(formatv("could not find section '{0}'", S.first).str()),
+          Obj->getFileName());
+
   for (std::pair<unsigned, bool> S : SecIndices)
     if (!S.second)
-      reportWarning(formatv("could not find section {0}", S.first).str());
+      reportWarning(
+          createError(formatv("could not find section {0}", S.first).str()),
+          Obj->getFileName());
 
   return Ret;
 }
Index: llvm/trunk/tools/llvm-readobj/llvm-readobj.h
===================================================================
--- llvm/trunk/tools/llvm-readobj/llvm-readobj.h
+++ llvm/trunk/tools/llvm-readobj/llvm-readobj.h
@@ -21,12 +21,9 @@
   }
 
   // Various helper functions.
-  LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg);
-  void reportError(Error Err, StringRef Input); 
-  void reportWarning(Twine Msg);
-  void reportWarning(StringRef Input, Error Err);
-  void warn(llvm::Error Err);
-  void error(std::error_code EC);
+  LLVM_ATTRIBUTE_NORETURN void reportError(Error Err, StringRef Input); 
+  LLVM_ATTRIBUTE_NORETURN void reportError(std::error_code EC, StringRef Input);
+  void reportWarning(Error Err, StringRef Input);
 
   template <class T> T unwrapOrError(StringRef Input, Expected<T> EO) {
     if (EO)
Index: llvm/trunk/tools/llvm-readobj/llvm-readobj.cpp
===================================================================
--- llvm/trunk/tools/llvm-readobj/llvm-readobj.cpp
+++ llvm/trunk/tools/llvm-readobj/llvm-readobj.cpp
@@ -375,52 +375,46 @@
 
 namespace llvm {
 
-LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg) {
+LLVM_ATTRIBUTE_NORETURN static void error(Twine Msg) {
+  // Flush the standard output to print the error at a
+  // proper place.
   fouts().flush();
   errs() << "\n";
   WithColor::error(errs()) << Msg << "\n";
   exit(1);
 }
 
-void reportError(Error Err, StringRef Input) {
+LLVM_ATTRIBUTE_NORETURN void reportError(Error Err, StringRef Input) {
   assert(Err);
   if (Input == "-")
     Input = "<stdin>";
   handleAllErrors(createFileError(Input, std::move(Err)),
-                  [&](const ErrorInfoBase &EI) { reportError(EI.message()); });
+                  [&](const ErrorInfoBase &EI) { error(EI.message()); });
+  llvm_unreachable("error() call should never return");
 }
 
-void reportWarning(Twine Msg) {
-  fouts().flush();
-  errs() << "\n";
-  WithColor::warning(errs()) << Msg << "\n";
-}
-
-void reportWarning(StringRef Input, Error Err) {
+void reportWarning(Error Err, StringRef Input) {
+  assert(Err);
   if (Input == "-")
     Input = "<stdin>";
-  warn(createFileError(Input, std::move(Err)));
-}
 
-void warn(Error Err) {
-  handleAllErrors(std::move(Err), [&](const ErrorInfoBase &EI) {
-    reportWarning(EI.message());
-  });
-}
-
-void error(std::error_code EC) {
-  if (!EC)
-    return;
-  reportError(EC.message());
+  handleAllErrors(createFileError(Input, std::move(Err)),
+                  [&](const ErrorInfoBase &EI) {
+                    // Flush the standard output to print the warning at a
+                    // proper place.
+                    fouts().flush();
+                    errs() << "\n";
+                    WithColor::warning(errs()) << EI.message() << "\n";
+                  });
 }
 
-} // namespace llvm
-
-static void reportError(std::error_code EC, StringRef Input) {
+LLVM_ATTRIBUTE_NORETURN void reportError(std::error_code EC, StringRef Input) {
   assert(EC != readobj_error::success);
   reportError(errorCodeToError(EC), Input);
 }
 
+} // namespace llvm
+
 static bool isMipsArch(unsigned Arch) {
   switch (Arch) {
   case llvm::Triple::mips: