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| author | aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-07-09 03:37:13 +0000 |
|---|---|---|
| committer | aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-07-09 03:37:13 +0000 |
| commit | 1922631399748632bd11f749af5a0ec79848cd60 (patch) | |
| tree | ea418c4c38fd76f73b99d6f70603ffce9b411bec /gcc/builtins.c | |
| parent | ecdeeb375dbda1a0874c16168c47024f852e1a63 (diff) | |
| download | gcc-1922631399748632bd11f749af5a0ec79848cd60.tar.gz | |
* builtins.c (fold_builtin_strncpy): Make sure len is a constant
before comparing it as such.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@84343 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index ecb7841ec6d..11e1f05a0f9 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -7385,6 +7385,11 @@ fold_builtin_strncpy (tree exp, tree slen) if (integer_zerop (len)) return omit_one_operand (TREE_TYPE (exp), dest, src); + /* We can't compare slen with len as constants below if len is not a + constant. */ + if (len == 0 || TREE_CODE (len) != INTEGER_CST) + return 0; + if (!slen) slen = c_strlen (src, 1); |