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| author | Richard Guenther <rguenther@suse.de> | 2009-06-29 11:57:15 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2009-06-29 11:57:15 +0000 |
| commit | 09a782ebdacc6a5227ed464d47eb3cc27e252c6a (patch) | |
| tree | 50e923e8964fbc46128696b82c92d91fa0a41a33 /gcc/testsuite/gcc.c-torture/execute/pr40579.c | |
| parent | 152413f7edcf11d34026246569f5145d414f1653 (diff) | |
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re PR tree-optimization/40579 (gcc -O2 optimization causes infinite loop and wrong output)
2009-06-29 Richard Guenther <rguenther@suse.de>
PR tree-optimization/40579
* tree-vrp.c (vrp_evaluate_conditional): Bail out early if
the IL to simplify has constants that overflowed.
* gcc.c-torture/execute/pr40579.c: New testcase.
From-SVN: r149046
Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute/pr40579.c')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr40579.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/pr40579.c b/gcc/testsuite/gcc.c-torture/execute/pr40579.c new file mode 100644 index 0000000..7f44af3 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr40579.c @@ -0,0 +1,28 @@ +extern void abort (void); +static char * __attribute__((noinline)) +itos(int num) +{ + return (char *)0; +} +static void __attribute__((noinline)) +foo(int i, const char *x) +{ + if (i >= 4) + abort (); +} +int main() +{ + int x = -__INT_MAX__ + 3; + int i; + + for (i = 0; i < 4; ++i) + { + char *p; + --x; + p = itos(x); + foo(i, p); + } + + return 0; +} + |