diff options
| author | pfg <pfg@FreeBSD.org> | 2013-11-15 03:05:33 +0000 |
|---|---|---|
| committer | pfg <pfg@FreeBSD.org> | 2013-11-15 03:05:33 +0000 |
| commit | d712dfff74f1b6f1f38c92c44b6fb8fdf716b49a (patch) | |
| tree | 3a910fb9c0c34746b952d1d02a98421d6a54c494 /contrib/gcc | |
| parent | eae6b3d7742ccb5096c35bc018639c519bce27f6 (diff) | |
| download | FreeBSD-src-d712dfff74f1b6f1f38c92c44b6fb8fdf716b49a.zip FreeBSD-src-d712dfff74f1b6f1f38c92c44b6fb8fdf716b49a.tar.gz | |
gcc: warn about integer overflow in constant expressions in the C++ frontend.
This fixes GCC 28986:
http://gcc.gnu.org/ml/gcc-patches/2007-01/msg00473.html
Obtained from: gcc 4.3 (rev. 120558; GPLv2)
MFC after: 3 weeks
Diffstat (limited to 'contrib/gcc')
| -rw-r--r-- | contrib/gcc/cp/typeck.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/contrib/gcc/cp/typeck.c b/contrib/gcc/cp/typeck.c index 6b28f49..dd92b22 100644 --- a/contrib/gcc/cp/typeck.c +++ b/contrib/gcc/cp/typeck.c @@ -3773,6 +3773,12 @@ build_binary_op (enum tree_code code, tree orig_op0, tree orig_op1, result = fold_if_not_in_template (result); if (final_type != 0) result = cp_convert (final_type, result); + + if (TREE_OVERFLOW_P (result) + && !TREE_OVERFLOW_P (op0) + && !TREE_OVERFLOW_P (op1)) + overflow_warning (result); + return result; } |
