diff options
Diffstat (limited to 'gcc/testsuite/c-c++-common/Wshift-overflow-5.c')
| -rw-r--r-- | gcc/testsuite/c-c++-common/Wshift-overflow-5.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/testsuite/c-c++-common/Wshift-overflow-5.c b/gcc/testsuite/c-c++-common/Wshift-overflow-5.c new file mode 100644 index 0000000000..c9f464355d --- /dev/null +++ b/gcc/testsuite/c-c++-common/Wshift-overflow-5.c @@ -0,0 +1,11 @@ +/* PR c++/55095 */ +/* { dg-do compile { target int32 } } */ +/* { dg-options "-O -Wshift-overflow=2" } */ +/* { dg-additional-options "-std=c++11" { target c++ } } */ + +#define INTM1 (sizeof (int) * __CHAR_BIT__ - 1) +#define LLONGM1 (sizeof (long long) * __CHAR_BIT__ - 1) + +int i1 = 1 << INTM1; /* { dg-warning "requires 33 bits to represent" } */ +unsigned u1 = 1 << INTM1; /* { dg-warning "requires 33 bits to represent" } */ +long long int l1 = 1LL << LLONGM1; /* { dg-warning "requires 65 bits to represent" } */ |