[Bug ld/26869] ld: assertion fail ../../bfd/elflink.c:14806 on i686-linux-gnu since 382aae06322799a25ea52fe61b243cbca4db8d66

[mliska at suse dot cz]

https://sourceware.org/bugzilla/show_bug.cgi?id=26869

Martin Liska <mliska at suse dot cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ld: assertion fail          |ld: assertion fail
                   |../../bfd/elflink.c:14806   |../../bfd/elflink.c:14806
                   |on i686-linux-gnu           |on i686-linux-gnu since
                   |                            |382aae06322799a25ea52fe61b2
                   |                            |43cbca4db8d66
                 CC|                            |hjl.tools at gmail dot com

--- Comment #3 from Martin Liska <mliska at suse dot cz> ---
I have a nice reproducer:

$ cat ~/Programming/testcases/metrics.ii
void ReadElfBuildId(void *);
extern char __ehdr_start;
void ParseSmapsHeader() { ReadElfBuildId(&__ehdr_start); }

$ g++ ~/Programming/testcases/metrics.ii -fPIC -shared -O -m32 -o
/tmp/metrics.o -c
$ ./ld/ld-new /tmp/metrics.o -shared -melf_i386
./ld/ld-new: BFD (GNU Binutils) 2.34.50.20200401 assertion fail
../../bfd/elflink.c:14687
Segmentation fault (core dumped)

For completeness there's .s file:

$ cat metrics.s 
        .file   "metrics.ii"
        .text
        .globl  _Z16ParseSmapsHeaderv
        .type   _Z16ParseSmapsHeaderv, @function
_Z16ParseSmapsHeaderv:
.LFB0:
        .cfi_startproc
        pushl   %ebx
        .cfi_def_cfa_offset 8
        .cfi_offset 3, -8
        subl    $20, %esp
        .cfi_def_cfa_offset 28
        call    __x86.get_pc_thunk.bx
        addl    $_GLOBAL_OFFSET_TABLE_, %ebx
        pushl   __ehdr_start@GOT(%ebx)
        .cfi_def_cfa_offset 32
        call    _Z14ReadElfBuildIdPv@PLT
        addl    $24, %esp
        .cfi_def_cfa_offset 8
        popl    %ebx
        .cfi_restore 3
        .cfi_def_cfa_offset 4
        ret
        .cfi_endproc
.LFE0:
        .size   _Z16ParseSmapsHeaderv, .-_Z16ParseSmapsHeaderv
        .section       
.text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
        .globl  __x86.get_pc_thunk.bx
        .hidden __x86.get_pc_thunk.bx
        .type   __x86.get_pc_thunk.bx, @function
__x86.get_pc_thunk.bx:
.LFB1:
        .cfi_startproc
        movl    (%esp), %ebx
        ret
        .cfi_endproc
.LFE1:
        .ident  "GCC: (SUSE Linux) 10.2.1 20201028 [revision
a78cd759754c92cecbf235ac9b447dcdff6c6e2f]"
        .section        .note.GNU-stack,"",@progbits

Started with H.J.'s revision 382aae06322799a25ea52fe61b243cbca4db8d66.

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