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