Viewing file:  Wstringop-overflow-67.c (1.39 KB) -rw-r--r--
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/* PR middle-end/100571 - bogus -Wstringop-overflow with VLA of elements
larger than byte
{ dg-do compile }
{ dg-options "-O2 -Wall" }
{ dg-require-effective-target alloca } */
__attribute__ ((access (read_only, 1, 2))) void fro (int *, int);
__attribute__ ((access (write_only, 1, 2))) void fwo (int *, int);
__attribute__ ((access (read_write, 1, 2))) void frw (int *, int);
extern __SIZE_TYPE__ n;
void alloca_ro (void)
{
int *a = __builtin_alloca (n * sizeof *a);
a[0] = 0;
fro (a, n);
}
void alloca_wo (void)
{
int *a = __builtin_alloca (n * sizeof *a);
fwo (a, n);
}
void alloca_rw (void)
{
int *a = __builtin_alloca (n * sizeof *a);
a[0] = 0;
frw (a, n);
}
void calloc_ro (void)
{
int *a = __builtin_calloc (n, sizeof *a);
fro (a, n);
}
void calloc_wo (void)
{
int *a = __builtin_calloc (n, sizeof *a);
fwo (a, n);
}
void calloc_rw (void)
{
int *a = __builtin_calloc (n, sizeof *a);
a[0] = 0;
frw (a, n);
}
void malloc_ro (void)
{
int *a = __builtin_malloc (n * sizeof *a);
a[0] = 0;
fro (a, n);
}
void malloc_wo (void)
{
int *a = __builtin_malloc (n * sizeof *a);
fwo (a, n);
}
void malloc_rw (void)
{
int *a = __builtin_malloc (n * sizeof *a);
a[0] = 0;
frw (a, n);
}
void vla_ro (void)
{
int a[n];
a[0] = 0;
fro (a, n);
}
void vla_wo (void)
{
int a[n];
fwo (a, n);
}
void vla_rw (void)
{
int a[n];
a[0] = 0;
frw (a, n);
}
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