80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
/* PR tree-optimization/59970 - Bogus -Wmaybe-uninitialized at low optimization
|
|
levels
|
|
{ dg-do compile }
|
|
{ dg-options "-Wall" } */
|
|
|
|
#pragma GCC push_options
|
|
#pragma GCC optimize ("1")
|
|
|
|
__attribute__ ((noipa)) int
|
|
d_demangle_callback_O1 (const char *mangled)
|
|
{
|
|
enum { DCT_TYPE, DCT_GLOBAL_DTORS } type;
|
|
int dc;
|
|
|
|
/* Fails for -Og and -O1. */
|
|
if (mangled)
|
|
type = DCT_GLOBAL_DTORS;
|
|
else
|
|
type = DCT_TYPE;
|
|
|
|
/* If both cases assign the same value, all is fine. */
|
|
switch (type)
|
|
{
|
|
case DCT_TYPE:
|
|
dc = 0 /* 1 */;
|
|
break;
|
|
case DCT_GLOBAL_DTORS:
|
|
dc = /* 0 */ 1;
|
|
break;
|
|
|
|
/* If this is added, all is fine. */
|
|
#ifdef ABORT
|
|
default:
|
|
__builtin_unreachable ();
|
|
#endif
|
|
}
|
|
|
|
return dc; // { dg-bogus "uninitialized" }
|
|
}
|
|
|
|
#pragma GCC pop_options
|
|
|
|
|
|
#pragma GCC optimize ("Og")
|
|
|
|
__attribute__ ((noipa)) int
|
|
d_demangle_callback_Og (const char *mangled)
|
|
{
|
|
enum { DCT_TYPE, DCT_GLOBAL_DTORS } type;
|
|
int dc;
|
|
|
|
/* Fails for -Og. */
|
|
/* Removing either the function call or the array dereference, it'll be like
|
|
the TOGGLE1 case. */
|
|
extern int cmp (void);
|
|
if (cmp () && mangled[0])
|
|
type = DCT_GLOBAL_DTORS;
|
|
else
|
|
type = DCT_TYPE;
|
|
|
|
/* If both cases assign the same value, all is fine. */
|
|
switch (type)
|
|
{
|
|
case DCT_TYPE:
|
|
dc = 0 /* 1 */;
|
|
break;
|
|
case DCT_GLOBAL_DTORS:
|
|
dc = /* 0 */ 1;
|
|
break;
|
|
|
|
/* If this is added, all is fine. */
|
|
#ifdef ABORT
|
|
default:
|
|
__builtin_unreachable ();
|
|
#endif
|
|
}
|
|
|
|
return dc; // { dg-bogus "uninitialized" }
|
|
}
|