| /* PR middle-end/101494 - bogus -Wmaybe-uninitialized on memrchr of size 0 |
| { dg-do compile } |
| { dg-options "-O2 -Wall" } |
| { dg-require-effective-target alloca } */ |
| |
| typedef __SIZE_TYPE__ size_t; |
| |
| void* alloca (size_t); |
| |
| __attribute__ ((malloc, alloc_size (1))) void* alloc (size_t); |
| |
| __attribute__ ((access (read_only, 1, 2))) void* sink (void*, size_t); |
| |
| void test_alloca_zero (size_t i) |
| { |
| char *p = alloca (0); |
| sink (p, 0); // { dg-bogus "\\\[-Wuninitialized" } |
| } |
| |
| void test_alloca_zero_pi (size_t i) |
| { |
| char *p = alloca (0); |
| sink (p + i, 0); |
| } |
| |
| void test_alloca_cst (void) |
| { |
| char *p = alloca (7); |
| sink (p, 0); // { dg-bogus "\\\[-Wuninitialized" } |
| } |
| |
| void test_alloca_cst_p1 (void) |
| { |
| char *p = alloca (7); |
| sink (p + 1, 0); // { dg-bogus "\\\[-Wuninitialized" } |
| } |
| |
| void test_alloca_cst_p7 (void) |
| { |
| char *p = alloca (7); |
| sink (p + 7, 0); // { dg-bogus "\\\[-Wuninitialized" } |
| } |
| |
| void test_alloca_var (size_t n) |
| { |
| char *p = alloca (n); |
| sink (p, 0); // { dg-bogus "\\\[-Wuninitialized" } |
| } |
| |
| void test_alloca_var_p1 (size_t n) |
| { |
| char *p = alloca (n); |
| sink (p + 1, 0); // { dg-bogus "\\\[-Wuninitialized" } |
| } |
| |
| void test_alloca_var_pn (size_t n) |
| { |
| char *p = alloca (n); |
| sink (p + n, 0); // { dg-bogus "\\\[-Wuninitialized" } |
| } |
| |