[Bug ld/24701] New: Irix 6.5.30, gcc8.2.0, LD does not output well formed executables

[daniel.hams at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=24701

            Bug ID: 24701
           Summary: Irix 6.5.30, gcc8.2.0, LD does not output well formed
                    executables
           Product: binutils
           Version: 2.32
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: daniel.hams at gmail dot com
  Target Milestone: ---

I realise this is a bug for a long since discontinued operating system -
apologies for that.

The SGI enthusiast community is in the process of trying to get more modern
tools up and running for these machines - and right now we have a mostly OK
gcc8.2.0 for C when using binutils-2.19.

When using binutils-2.32 - LD doesn't produce valid executables - launching
them in DBX shows the following:

Executable /usr/people/dan/Sources/ldtests/./exe.gcc8.gitld
(dbx) run
Now execute givenfile with the following call:
execvp("/usr/didbs/bin/bash", 
        "/usr/didbs/bin/bash",
        "-c",
        "exec ././exe.gcc8.gitld",
        (char *)0);
Warning: SymbolTableDwarf: RA register is DW_FRAME_UNDEFINED_VAL in frame 1034,
pc 0xfae43c0
Process  1699 (exe.gcc8.gitld) started
Process  1699 (exe.gcc8.gitld) stopped on signal SIGSEGV: Segmentation
violation (default) at [build_entire_object_list:446 ,0xfb6ff6c]
         Source (of /j7/mtibuild/v744/workarea/v7.4.4m/rld/rld_startup.c) not
available for Process  1699
(dbx) where
>  0 build_entire_object_list(0xfbd7c58, 0x2, 0x7ffd7da0, 0x34, 0x0, 0x0, 0x76, 
> 0x2) ["/j7/mtibuild/v744/workarea/v7.4.4m/rld/rld_startup.c":446, 0xfb6ff6c]
   1 read_aux_vec_and_build_objlist(0x2, 0x10000000, 0x40, 0x34, 0x0, 0x0,
0x76, 0x2) ["/j7/mtibuild/v744/workarea/v7.4.4m/rld/rld_startup.c":1508,
0xfb71104]
   2 sgi_main(0x0, 0x7ffd7f54, 0x7ffd7f54, 0x34, 0x0, 0x0, 0x76, 0x2)
["/j7/mtibuild/v744/workarea/v7.4.4m/rld/rld_startup.c":1648, 0xfb71344]
   3 newmain() ["/j7/mtibuild/v744/workarea/v7.4.4m/rld/rld_newmain.s":68,
0xfb60184]
(dbx) 

Notably - GAS seems fine and using an earlier LD with 2.32 GAS will produce
valid executables.

You can find some built binaries and some readelf dumps of them here:

https://github.com/danielhams/irix-binutils-investigation

The failing executable there is this one:

https://github.com/danielhams/irix-binutils-investigation/blob/master/exe.gcc8.ld232

Kr,

Dan

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