Viewing file:  uninit-pr101494.c (1.25 KB) -rw-r--r--
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/* 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" }
}
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