diff options
| author | Alexander Ivchenko <alexander.ivchenko@intel.com> | 2013-05-24 09:08:45 +0000 |
|---|---|---|
| committer | Kirill Yukhin <kyukhin@gcc.gnu.org> | 2013-05-24 09:08:45 +0000 |
| commit | 634e03d3b84e77a4ff15f6271016dcb309eb0f95 (patch) | |
| tree | a4f0295eb7ee3be44054ba1e4ed8760a40410884 /gcc/tree-ssa-sccvn.c | |
| parent | 633a3f2aea9d047c21afd1ae7fb2d5c02589e883 (diff) | |
| download | gcc-634e03d3b84e77a4ff15f6271016dcb309eb0f95.zip gcc-634e03d3b84e77a4ff15f6271016dcb309eb0f95.tar.gz gcc-634e03d3b84e77a4ff15f6271016dcb309eb0f95.tar.bz2 | |
re PR tree-optimization/57385 ([tree-ssa] Possible segfault in fully_constant_vn_reference_p)
gcc/ChangeLog
PR tree-ssa/57385
* tree-ssa-sccvn.c (fully_constant_vn_reference_p): Check
that index is not negative.
gcc/testsuite/ChangeLog
PR tree-ssa/57385
* gcc.dg/tree-ssa/pr57385.c: New test.
From-SVN: r199282
Diffstat (limited to 'gcc/tree-ssa-sccvn.c')
| -rw-r--r-- | gcc/tree-ssa-sccvn.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index 49d61b0..0e7a74c 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -1294,6 +1294,7 @@ fully_constant_vn_reference_p (vn_reference_t ref) == TYPE_MODE (TREE_TYPE (TREE_TYPE (arg0->op0)))) && GET_MODE_CLASS (TYPE_MODE (op->type)) == MODE_INT && GET_MODE_SIZE (TYPE_MODE (op->type)) == 1 + && tree_int_cst_sgn (op->op0) >= 0 && compare_tree_int (op->op0, TREE_STRING_LENGTH (arg0->op0)) < 0) return build_int_cst_type (op->type, (TREE_STRING_POINTER (arg0->op0) |