[lldb] Add newline in output of `target modules lookup`

[alvinhochun]

Summary

This adds a line break between each result address in the output of the
lldb command target modules lookup. Before this change, a new address
result will be printed on the same line as the summary of the last
result, making the output difficult to view.

Also adds a test for this command.

[labath]

lldb/test/Shell/Commands/command-target-modules-lookup.test

13

This might be better off as an --implicit-check-not argument to FileCheck. As it stands now, it will only check that ignoreThisFunction does not appear at the very end of the output.

[alvinhochun]

Use --implicit-check-not in test

lldb/source/Commands/CommandObjectTarget.cpp

if (num_matches > 0) {
     strm.IndentMore();
     for (uint32_t i = 0; i < num_matches; ++i) {
       Symbol *symbol = symtab->SymbolAtIndex(match_indexes[i]);
       if (symbol) {
         if (symbol->ValueIsAddress()) {
           DumpAddress(
               interpreter.GetExecutionContext().GetBestExecutionContextScope(),
               symbol->GetAddressRef(), verbose, all_ranges, strm);
+          strm.EOL();
         } else {
           strm.IndentMore();
           strm.Indent("    Value: ");
           strm.Printf("0x%16.16" PRIx64 "\n", symbol->GetRawValue());
           if (symbol->GetByteSizeIsValid()) {
             strm.Indent("    Size: ");
             strm.Printf("0x%16.16" PRIx64 "\n", symbol->GetByteSize());
           }

lldb/test/Shell/Commands/Inputs/symbols.yaml

+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_REL
+  Machine:         EM_AARCH64
+  SectionHeaderStringTable: .strtab
+Sections:
+  - Name:            .text
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    AddressAlign:    0x4
+  - Type:            SectionHeaderTable
+    Sections:
+      - Name:            .text
+      - Name:            .strtab
+      - Name:            .symtab
+Symbols:
+  - Name:            _Z8someFunciii
+    Type:            STT_FUNC
+    Section:         .text
+    Binding:         STB_GLOBAL
+    Size:            0x1C
+  - Name:            _Z8someFuncci
+    Type:            STT_FUNC
+    Section:         .text
+    Binding:         STB_GLOBAL
+    Value:           0x1C
+    Size:            0x18
+  - Name:            _Z13someOtherFuncv
+    Type:            STT_FUNC
+    Section:         .text
+    Binding:         STB_GLOBAL
+    Value:           0x34
+    Size:            0x4
+  - Name:            _Z13someOtherFuncd
+    Type:            STT_FUNC
+    Section:         .text
+    Binding:         STB_GLOBAL
+    Value:           0x38
+    Size:            0x10
+  - Name:            _Z18ignoreThisFunctionv
+    Type:            STT_FUNC
+    Section:         .text
+    Binding:         STB_GLOBAL
+    Value:           0x48
+    Size:            0x8
+...

lldb/test/Shell/Commands/command-target-modules-lookup.test

+# RUN: yaml2obj %S/Inputs/symbols.yaml -o %t
+
+# RUN: %lldb %t -b -o "target modules lookup -A -r -s some" | FileCheck %s -DMODULE=%basename_t.tmp
+# CHECK:      4 symbols match the regular expression 'some' in {{.*}}[[MODULE]]:
+# CHECK-NEXT: Address: [[MODULE]][0x0000000000000000] ([[MODULE]]..text + 0)
+# CHECK-NEXT: Summary: [[MODULE]]`someFunc(int, int, int)
+# CHECK-NEXT: Address: [[MODULE]][0x000000000000001c] ([[MODULE]]..text + 28)
+# CHECK-NEXT: Summary: [[MODULE]]`someFunc(char, int)
+# CHECK-NEXT: Address: [[MODULE]][0x0000000000000034] ([[MODULE]]..text + 52)
+# CHECK-NEXT: Summary: [[MODULE]]`someOtherFunc()
+# CHECK-NEXT: Address: [[MODULE]][0x0000000000000038] ([[MODULE]]..text + 56)
+# CHECK-NEXT: Summary: [[MODULE]]`someOtherFunc(double)
+# CHECK-NOT:  ignoreThisFunction