This testcase fails: /* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-optimized" } */
int f(int *p) { int a = *p; int *q = (int *)0xDEADBEE0; *q = 5; return *p == a; } /* { dg-final { scan-tree-dump-times " = \\\*p" 2 "optimized" } } */ /* { dg-final { scan-tree-dump-not "return 1" "optimized" } } */ /* { dg-final { cleanup-tree-dump "optimized" } } */ Unlike PR38984 it does not require -fno-delete-null-pointer-checks. -- Summary: [4.2/4.3/4.4 Regression] missing constraints for pointers accessed directly via their address Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: bonzini at gnu dot org OtherBugsDependingO 38984 nThis: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38985