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// RUN: %clang_scudo %s -o %t
// RUN: %run %t valid 2>&1
// RUN: not %run %t invalid 2>&1
// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t invalid 2>&1
// UNSUPPORTED: android
// Tests that valloc and pvalloc work as intended.
#include <assert.h>
#include <errno.h>
#include <malloc.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
size_t round_up_to(size_t size, size_t alignment) {
return (size + alignment - 1) & ~(alignment - 1);
}
int main(int argc, char **argv)
{
void *p = nullptr;
size_t size, page_size;
assert(argc == 2);
page_size = sysconf(_SC_PAGESIZE);
// Check that the page size is a power of two.
assert((page_size & (page_size - 1)) == 0);
if (!strcmp(argv[1], "valid")) {
for (int i = (sizeof(void *) == 4) ? 3 : 4; i < 21; i++) {
size = 1U << i;
p = valloc(size - (2 * sizeof(void *)));
assert(p);
assert(((uintptr_t)p & (page_size - 1)) == 0);
free(p);
p = pvalloc(size - (2 * sizeof(void *)));
assert(p);
assert(((uintptr_t)p & (page_size - 1)) == 0);
assert(malloc_usable_size(p) >= round_up_to(size, page_size));
free(p);
p = valloc(size);
assert(p);
assert(((uintptr_t)p & (page_size - 1)) == 0);
free(p);
p = pvalloc(size);
assert(p);
assert(((uintptr_t)p & (page_size - 1)) == 0);
assert(malloc_usable_size(p) >= round_up_to(size, page_size));
free(p);
}
}
if (!strcmp(argv[1], "invalid")) {
// Size passed to pvalloc overflows when rounded up.
p = pvalloc((size_t)-1);
assert(!p);
assert(errno == ENOMEM);
errno = 0;
p = pvalloc((size_t)-page_size);
assert(!p);
assert(errno == ENOMEM);
}
return 0;
}
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