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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/114175] [13/14] Execution test failures on
 gcc.dg/c23-stdarg-6.c on multiple targets
Date: Mon, 18 Mar 2024 10:16:45 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114175

--- Comment #27 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
More complete testcase:
#include <stdarg.h>
struct S { int a[1024]; };
int f1 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (ap, i=
nt);
va_end (ap); return r; }
int f2 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (ap, i=
nt); r
+=3D va_arg (ap, int); va_end (ap); return r; }
int f3 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (ap, i=
nt); r
+=3D va_arg (ap, int); r +=3D va_arg (ap, int); va_end (ap); return r; }
int f4 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (ap, i=
nt); r
+=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); va=
_end (ap);
return r; }
int f5 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (ap, i=
nt); r
+=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r =
+=3D va_arg
(ap, int); va_end (ap); return r; }
int f6 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (ap, i=
nt); r
+=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r =
+=3D va_arg
(ap, int); r +=3D va_arg (ap, int); va_end (ap); return r; }
int f7 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (ap, i=
nt); r
+=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r =
+=3D va_arg
(ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); va_end (ap); r=
eturn r;
}
int f8 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (ap, i=
nt); r
+=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r =
+=3D va_arg
(ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg =
(ap, int);
va_end (ap); return r; }
struct S s1 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (=
ap,
int); va_end (ap); struct S s; s.a[0] =3D r; return s; }
struct S s2 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (=
ap,
int); r +=3D va_arg (ap, int); va_end (ap); struct S s; s.a[0] =3D r; retur=
n s; }
struct S s3 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (=
ap,
int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); va_end (ap); struct=
 S s;
s.a[0] =3D r; return s; }
struct S s4 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (=
ap,
int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, =
int);
va_end (ap); struct S s; s.a[0] =3D r; return s; }
struct S s5 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (=
ap,
int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, =
int); r +=3D
va_arg (ap, int); va_end (ap); struct S s; s.a[0] =3D r; return s; }
struct S s6 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (=
ap,
int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, =
int); r +=3D
va_arg (ap, int); r +=3D va_arg (ap, int); va_end (ap); struct S s; s.a[0] =
=3D r;
return s; }
struct S s7 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (=
ap,
int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, =
int); r +=3D
va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); va_end =
(ap);
struct S s; s.a[0] =3D r; return s; }
struct S s8 (...) { int r =3D 0; va_list ap; va_start (ap); r +=3D va_arg (=
ap,
int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, =
int); r +=3D
va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D va_arg (ap, int); r +=3D =
va_arg
(ap, int); va_end (ap); struct S s; s.a[0] =3D r; return s; }
int b1 (void) { return f8 (1, 2, 3, 4, 5, 6, 7, 8); }
int b2 (void) { return s8 (1, 2, 3, 4, 5, 6, 7, 8).a[0]; }
int main () { if (f1 (1) !=3D 1 || f2 (1, 2) !=3D 3 || f3 (1, 2, 3) !=3D 6 =
|| f4 (1,
2, 3, 4) !=3D 10 || f5 (1, 2, 3, 4, 5) !=3D 15 || f6 (1, 2, 3, 4, 5, 6) !=
=3D 21 || f7
(1, 2, 3, 4, 5, 6, 7) !=3D 28 || f8 (1, 2, 3, 4, 5, 6, 7, 8) !=3D 36)
__builtin_abort ();
if (s1 (1).a[0] !=3D 1 || s2 (1, 2).a[0] !=3D 3 || s3 (1, 2, 3).a[0] !=3D 6=
 || s4 (1,
2, 3, 4).a[0] !=3D 10 || s5 (1, 2, 3, 4, 5).a[0] !=3D 15 || s6 (1, 2, 3, 4,=
 5,
6).a[0] !=3D 21 || s7 (1, 2, 3, 4, 5, 6, 7).a[0] !=3D 28 || s8 (1, 2, 3, 4,=
 5, 6,
7, 8).a[0] !=3D 36) __builtin_abort (); }=