[DEMO] - Demo of incorrect symbol values produced by LLD

[grimar]

Summary

That is not for anything except demonstration of issue we have.

test/ELF/linkerscript/mixed-sections-symbols.s

+# REQUIRES: x86
+# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
+
+# RUN: echo "SECTIONS { . = SIZEOF_HEADERS; \
+# RUN:   .rodata : { *(.aaa.*) *(.bbb.*) A = .; *(.ccc.*) B = .; } \
+# RUN: }" > %t.script
+# RUN: ld.lld -o %t1 --script %t.script %t
+# RUN: llvm-readobj -s -t %t1 | FileCheck %s --check-prefix=xx
+
+.section .aaa.1,"a"
+.byte 11
+
+.section .aaa.2,"a"
+.byte 22
+
+.section .bbb.1,"aMS",@progbits,1
+.asciz "foo"
+
+.section .bbb.2,"aMS",@progbits,1
+.asciz "foo"
+
+.section .ccc.1,"a"
+.byte 33
+
+.section .ccc.2,"a"
+.byte 44
+
+## Output is below. Notice A == B == 0xF0, though it is not correct values:
+##
+##   Section {
+##     Index: 1
+##     Name: .rodata (1)
+##     Type: SHT_PROGBITS (0x1)
+##     Flags [ (0x2)
+##       SHF_ALLOC (0x2)
+##     ]
+##     Address: 0xE8
+##     Offset: 0xE8
+##     Size: 4
+##     Link: 0
+##     Info: 0
+##     AddressAlignment: 1
+##     EntrySize: 0
+##   }
+##   Section {
+##     Index: 2
+##     Name: .rodata (1)
+##     Type: SHT_PROGBITS (0x1)
+##     Flags [ (0x32)
+##       SHF_ALLOC (0x2)
+##       SHF_MERGE (0x10)
+##       SHF_STRINGS (0x20)
+##     ]
+##     Address: 0xEC
+##     Offset: 0xEC
+##     Size: 4
+##     Link: 0
+##     Info: 0
+##     AddressAlignment: 1
+##     EntrySize: 1
+##   }
+## ...
+##  Symbols [
+## ...
+##    Symbol {
+##      Name: A (1)
+##      Value: 0xF0
+##      Size: 0
+##      Binding: Global (0x1)
+##      Type: None (0x0)
+##      Other: 0
+##      Section: .rodata (0x2)
+##    }
+##    Symbol {
+##      Name: B (3)
+##      Value: 0xF0
+##      Size: 0
+##      Binding: Global (0x1)
+##      Type: None (0x0)
+##      Other: 0
+##      Section: .rodata (0x2)
+##    }
+##  ]