[Bug gold/21493] New: gold -r corrupts comdats

[rafael.espindola at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=21493

            Bug ID: 21493
           Summary: gold -r corrupts comdats
           Product: binutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gold
          Assignee: ccoutant at gmail dot com
          Reporter: rafael.espindola at gmail dot com
                CC: ian at airs dot com
  Target Milestone: ---

Given just

------------------------------------------
        .globl  _start
_start:
 callq foo

        .section        .text.bar,"axG",@progbits,abc,comdat
        .section        .text.foo,"axG",@progbits,xyz,comdat
        .global foo
foo:
        mov $60, %rax
        mov $0, %rdi
        syscall

------------------------------------------


the produced .o file has

         [ 1] .group            GROUP           0000000000000000 000040 000008
04     10   6  4                                                                
         [ 2] .group            GROUP           0000000000000000 000048 000008
04     10   7  4                                                                

            6: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT    1 abc           
            7: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT    2 xyz 


I.E, the sh_info points to the symbols where the group names are to be found.

If we pass it to "gold -r", the output has

         [ 1] abc               GROUP           0000000000000000 000040 000008
04      9   1  4                                                                
         [ 2] xyz               GROUP           0000000000000000 000048 000008
04      9   2  4                                                                

            1: 0000000000000000     0 SECTION LOCAL  DEFAULT    1               
            2: 0000000000000000     0 SECTION LOCAL  DEFAULT    2      


I.E., the sh_points to the section symbols.

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