diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr30286.c | 37 |
2 files changed, 40 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 88a0b34..66adf9b 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,8 @@ 2007-01-03 Jakub Jelinek <jakub@redhat.com> + PR middle-end/30286 + * gcc.dg/pr30286.c: New test. + PR c++/29535 * g++.dg/template/crash66.C: New test. diff --git a/gcc/testsuite/gcc.dg/pr30286.c b/gcc/testsuite/gcc.dg/pr30286.c new file mode 100644 index 0000000..9ec49b4 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr30286.c @@ -0,0 +1,37 @@ +/* PR middle-end/30286 */ +/* { dg-do run } */ +/* { dg-options "-O2 -ftrapv" } */ + +extern void abort (void); +struct S { struct S *s; }; +struct T { struct S *t[25]; }; + +void +__attribute__((noinline)) +foo (int i, struct T *x, struct S *y) +{ + int j; + for (j = 14; j > i; j--) + x->t[j] = y->s; +} + +int +main (void) +{ + struct S s; + struct T t; + int i; + + s.s = &s; + __builtin_memset (&t, 0, sizeof (t)); + foo (6, &t, &s); + for (i = 0; i < 25; i++) + if (t.t[i] != ((i > 6 && i <= 14) ? &s : (struct S *) 0)) + abort (); + __builtin_memset (&t, 0, sizeof (t)); + foo (-1, &t, &s); + for (i = 0; i < 25; i++) + if (t.t[i] != ((i >= 0 && i <= 14) ? &s : (struct S *) 0)) + abort (); + return 0; +} |