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| author | mpolacek <mpolacek@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-07-20 13:43:45 +0000 |
|---|---|---|
| committer | mpolacek <mpolacek@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-07-20 13:43:45 +0000 |
| commit | 8d669e79421bd614d5f7491f064606e6f46e07e8 (patch) | |
| tree | 42f1e133920c2d40c48b5953fe8ca2e817aae347 /gcc/c-family/c-common.h | |
| parent | 5ced42f848b676f2528f544c99283bb49d76c5a6 (diff) | |
| download | gcc-8d669e79421bd614d5f7491f064606e6f46e07e8.tar.gz | |
PR c++/55095
* c-common.c (c_fully_fold_internal): Warn about left shift overflows.
Use EXPR_LOC_OR_LOC.
(maybe_warn_shift_overflow): New function.
* c-common.h (maybe_warn_shift_overflow): Declare.
* c-opts.c (c_common_post_options): Set warn_shift_overflow.
* c.opt (Wshift-overflow): New option.
* c-typeck.c (digest_init): Pass OPT_Wpedantic to pedwarn_init.
(build_binary_op): Warn about left shift overflows.
* typeck.c (cp_build_binary_op): Warn about left shift overflows.
* doc/invoke.texi: Document -Wshift-overflow and -Wshift-overflow=.
* c-c++-common/Wshift-overflow-1.c: New test.
* c-c++-common/Wshift-overflow-2.c: New test.
* c-c++-common/Wshift-overflow-3.c: New test.
* c-c++-common/Wshift-overflow-4.c: New test.
* c-c++-common/Wshift-overflow-5.c: New test.
* g++.dg/cpp1y/left-shift-1.C: New test.
* gcc.dg/c90-left-shift-2.c: New test.
* gcc.dg/c90-left-shift-3.c: New test.
* gcc.dg/c99-left-shift-2.c: New test.
* gcc.dg/c99-left-shift-3.c: New test.
* gcc.dg/pr40501.c: Use -Wno-shift-overflow.
* gcc.c-torture/execute/pr40386.c: Likewise.
* gcc.dg/vect/pr33373.c: Likewise.
* gcc.dg/vect/vect-shift-2-big-array.c: Likewise.
* gcc.dg/vect/vect-shift-2.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@225998 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/c-family/c-common.h')
| -rw-r--r-- | gcc/c-family/c-common.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/c-family/c-common.h b/gcc/c-family/c-common.h index a2a46212e83..a198e794f5b 100644 --- a/gcc/c-family/c-common.h +++ b/gcc/c-family/c-common.h @@ -1052,6 +1052,7 @@ extern void record_locally_defined_typedef (tree); extern void maybe_record_typedef_use (tree); extern void maybe_warn_unused_local_typedefs (void); extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree); +extern bool maybe_warn_shift_overflow (location_t, tree, tree); extern vec<tree, va_gc> *make_tree_vector (void); extern void release_tree_vector (vec<tree, va_gc> *); extern vec<tree, va_gc> *make_tree_vector_single (tree); |