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| author | Jakub Jelinek <jakub@redhat.com> | 2005-09-20 21:10:44 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2005-09-20 21:10:44 +0200 |
| commit | 6fff2603132ecacd4e5cdd97ea92ab5443de613f (patch) | |
| tree | 13704f74fe1fa61712fb5d3b304d3cde911db3ea /gcc | |
| parent | df5d636787c2e7f945c11239fe81cb677941f3db (diff) | |
| download | gcc-6fff2603132ecacd4e5cdd97ea92ab5443de613f.zip gcc-6fff2603132ecacd4e5cdd97ea92ab5443de613f.tar.gz gcc-6fff2603132ecacd4e5cdd97ea92ab5443de613f.tar.bz2 | |
re PR tree-optimization/23929 (segfault in expand_simple_operations, tree-ssa-loop-niter.c:637)
PR tree-optimization/23929
* tree-ssa-loop-niter.c (expand_simple_operations): Return immediately
if expr is NULL.
* gcc.c-torture/compile/pr23929.c: New test.
From-SVN: r104461
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr23929.c | 21 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 6 |
4 files changed, 35 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3a6a8dd..f19cfdb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2005-09-20 Jakub Jelinek <jakub@redhat.com> + PR tree-optimization/23929 + * tree-ssa-loop-niter.c (expand_simple_operations): Return immediately + if expr is NULL. + PR tree-optimization/23818 * tree-stdarg.c (execute_optimize_stdarg): Call calculate_dominance_info. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a70e415..382e26f 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2005-09-20 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/23929 + * gcc.c-torture/compile/pr23929.c: New test. + 2005-09-20 Steve Ellcey <sje@cup.hp.com> PR testsuite/23186 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr23929.c b/gcc/testsuite/gcc.c-torture/compile/pr23929.c new file mode 100644 index 0000000..210bb585 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr23929.c @@ -0,0 +1,21 @@ +/* PR tree-optimization/23929 */ + +extern void bar (char *); + +void +foo (int n, char *z) +{ + char b[2048]; + int x, y; + + bar (b); + for (y = 0; y < 60; y++) + if (n == 600) + for (x = 0; x < 320;) + { + *z++ = b[x]; + x += 1; + *z++ = b[x]; + x += 1; + } +} diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index 544ead2..b720e19 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -634,11 +634,15 @@ expand_simple_operations (tree expr) { unsigned i, n; tree ret = NULL_TREE, e, ee, stmt; - enum tree_code code = TREE_CODE (expr); + enum tree_code code; + + if (expr == NULL_TREE) + return expr; if (is_gimple_min_invariant (expr)) return expr; + code = TREE_CODE (expr); if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (code))) { n = TREE_CODE_LENGTH (code); |