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From: "hubicka at kam dot mff.cuni.cz" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/103267] Wrong code with ipa-sra
Date: Tue, 16 Nov 2021 08:43:02 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103267

--- Comment #5 from hubicka at kam dot mff.cuni.cz ---
Works for me even with the 3 warnings.

hubicka@lomikamen:/aux/hubicka/trunk/build-lto2/gcc$ cat >tt.c
__attribute__ ((noinline,const))
infinite (int p)
{
  if (p)
    while (1);
  return p;
}
__attribute__ ((noinline))
static void
test(int p, int *a)
{
  int v =3D infinite (p);
  if (*a && v)
    __builtin_abort ();
}
test2(int *a)
{
  test(0,a);
}
main()
{
  test (1,0);
}
hubicka@lomikamen:/aux/hubicka/trunk/build-lto2/gcc$ ./xgcc --version
xgcc (GCC) 12.0.0 20211114 (experimental)
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

hubicka@lomikamen:/aux/hubicka/trunk/build-lto2/gcc$ ./xgcc -B ./ -O2 tt.c
tt.c:2:1: warning: return type defaults to =E2=80=98int=E2=80=99 [-Wimplici=
t-int]
    2 | infinite (int p)
      | ^~~~~~~~
tt.c:16:1: warning: return type defaults to =E2=80=98int=E2=80=99 [-Wimplic=
it-int]
   16 | test2(int *a)
      | ^~~~~
tt.c:20:1: warning: return type defaults to =E2=80=98int=E2=80=99 [-Wimplic=
it-int]
   20 | main()
      | ^~~~
hubicka@lomikamen:/aux/hubicka/trunk/build-lto2/gcc$ ./a.out
Segmentation fault=