diff options
| author | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-09-23 06:43:56 +0000 |
|---|---|---|
| committer | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-09-23 06:43:56 +0000 |
| commit | 9e072631954f2a99c0e65ea3ebb59a9e83594422 (patch) | |
| tree | 15e99879c42bf7c05a952c82b854878e4a17c80d /gcc/c-typeck.c | |
| parent | 21d9004815270f0f4b819229a47eadd5fc692000 (diff) | |
| download | ppe42-gcc-9e072631954f2a99c0e65ea3ebb59a9e83594422.tar.gz ppe42-gcc-9e072631954f2a99c0e65ea3ebb59a9e83594422.zip | |
PR c/39779
* c-typeck.c (build_binary_op) <short_shift>: Check that integer
constant is more than zero.
testsuite/ChangeLog:
PR c/39779
* gcc.c-torture/compile/pr39779.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@152058 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/c-typeck.c')
| -rw-r--r-- | gcc/c-typeck.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c index 411b9ec2aa2..1b2b8585823 100644 --- a/gcc/c-typeck.c +++ b/gcc/c-typeck.c @@ -9465,6 +9465,7 @@ build_binary_op (location_t location, enum tree_code code, unsigned_arg = TYPE_UNSIGNED (TREE_TYPE (op0)); if (TYPE_PRECISION (TREE_TYPE (arg0)) < TYPE_PRECISION (result_type) + && tree_int_cst_sgn (op1) > 0 /* We can shorten only if the shift count is less than the number of bits in the smaller type size. */ && compare_tree_int (op1, TYPE_PRECISION (TREE_TYPE (arg0))) < 0 |
