[Bug middle-end/51323] g++ confuses this with function argument in optimized call
jakub at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Nov 28 18:23:00 GMT 2011
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51323
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2011-11-28
CC| |jakub at gcc dot gnu.org
Component|c++ |middle-end
Ever Confirmed|0 |1
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-28 17:54:05 UTC ---
Can't reproduce this with 4.6, but can with the trunk.
/* PR middle-end/51323 */
extern void abort (void);
struct S { int a, b, c; };
int v;
__attribute__((noinline, noclone)) void
foo (int x, int y, int z)
{
if (x != v || y != 0 || z != 9)
abort ();
}
static inline int
baz (const struct S *p)
{
return p->b;
}
__attribute__((noinline, noclone)) void
bar (int x, struct S y)
{
foo (baz (&y), 0, x);
}
int
main ()
{
struct S s;
v = 3; s.a = v - 1; s.b = v; s.c = v + 1;
bar (9, s);
v = 17; s.a = v - 1; s.b = v; s.c = v + 1;
bar (9, s);
return 0;
}
at -O2 -m32 fails. My http://gcc.gnu.org/ml/gcc-patches/2011-11/msg02413.html
seems to fix this.
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