diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/Walloc-size-larger-than-16.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/Walloc-size-larger-than-16.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/Walloc-size-larger-than-16.c b/gcc/testsuite/gcc.dg/Walloc-size-larger-than-16.c new file mode 100644 index 00000000000..837b69a36d8 --- /dev/null +++ b/gcc/testsuite/gcc.dg/Walloc-size-larger-than-16.c @@ -0,0 +1,32 @@ +/* PR middle-end/82063 - issues with arguments enabled by -Wall + { dg-do compile } + { dg-options "-O -Walloc-size-larger-than=1zb -ftrack-macro-expansion=0" } */ + +typedef __SIZE_TYPE__ size_t; + +void sink (void*); + +#define T(x) sink (x) + +/* Verify that an invalid -Walloc-size-larger-than argument is diagnosed + and rejected without changing the default setting of PTRDIFF_MAX. */ + +void f (void) +{ + size_t n = 0; + T (__builtin_malloc (n)); + + n = __PTRDIFF_MAX__; + T (__builtin_malloc (n)); + + n += 1; + T (__builtin_malloc (n)); /* { dg-warning "exceeds maximum object size" } */ + + n = __SIZE_MAX__ - 1; + T (__builtin_malloc (n)); /* { dg-warning "exceeds maximum object size" } */ + + n = __SIZE_MAX__; + T (__builtin_malloc (n)); /* { dg-warning "exceeds maximum object size" } */ +} + +/* { dg-warning "invalid argument .1zb. to .-Walloc-size-larger-than=." "" { target *-*-* } 0 } */ |