[Bug tree-optimization/91625] FAIL: gcc.dg/strlenopt-68.c execution test

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91625

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |msebor at gcc dot gnu.org

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
What does the optimized dump look like for function equal_4_gs0_gs3_ga5_0?

I see the same code with an hppa64-hp-hpux11.11 cross as with a native
x86_64-linux compiler so I can't imagine what about it might cause the
assertion to fail except the result returned from the library call:

  <bb 5> [local count: 1073741824]:
  # iftmp.2_2 = PHI <&gs0(2), &gs3(3), &ga5(4)>
  _1 = snprintf (0B, 0, "%s", iftmp.2_2);
  if (_1 != 4)
    goto <bb 6>; [0.04%]
  else
    goto <bb 7>; [99.96%]

  <bb 6> [local count: 429497]:
  __builtin_printf ("assertion failed on line %i: %s\n", 41, "snprintf (0, 0,
\"%s\", p) == 4");
  __builtin_abort ();

What value does the function return at runtime?