[Bug libctf/29291] New: ld-ctf/data-func-conflicted*.d FAIL with -g3 -O0

[ro at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29291

            Bug ID: 29291
           Summary: ld-ctf/data-func-conflicted*.d FAIL with -g3 -O0
           Product: binutils
           Version: 2.39 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libctf
          Assignee: unassigned at sourceware dot org
          Reporter: ro at gcc dot gnu.org
  Target Milestone: ---
            Target: amd64--c-solaris2.11, x86_64-pc-linux-gnu

When investigating a different CTF issue on Solaris, I built binutils trunk
with
gcc 12.1.0 -g3 -O0.  This caused two CTF tests to FAIL that PASS with the
regular
-g -O2:

FAIL: Conflicted data syms, partially indexed, stripped, with variables
FAIL: Conflicted data syms, partially indexed, stripped

ld.log shows

regexp_diff match failure
regexp "^    Variable section:  .* \(0x10 bytes\)$"
line   "    Variable section:   0x5c -- 0x73 (0x18 bytes)"
regexp_diff match failure
regexp "^    Type section:      .* \(0x118 bytes\)$"
line   "    Type section:       0x74 -- 0x197 (0x124 bytes)"
regexp_diff match failure
regexp "^    funcs -> .*$"
line   "    foo -> 0xf: (kind 5) void *(*) () (aligned at 0x8)"
regexp_diff match failure
regexp "^    other_func -> .*$"
line   "    funcs -> 0xe: (kind 4) void **([16])(*) (const char *restrict, int
(*)(*) (const char *)) (size 0x80) (aligned at 0x8) -> 0xc: (kind 3) void **(*)
(const char *restrict, int (*)(*) (const char *)) (size 0x8) (aligned at 0x8)
-> 0xb: (kind 5) void *(*) (const char *restrict, int (*)(*) (const char *))
(aligned at 0x8)"
FAIL: Conflicted data syms, partially indexed, stripped, with variables

regexp_diff match failure
regexp "^    Type section:      .* \(0x118 bytes\)$"
line   "    Type section:       0x5c -- 0x17f (0x124 bytes)"
FAIL: Conflicted data syms, partially indexed, stripped

Seen on Solaris/amd64 and Linux/x86_64, probably generic.

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