forked from OSchip/llvm-project
71 lines
1.8 KiB
C++
71 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 | FileCheck %s
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// Tests that the various aligned allocation functions work as intended. Also
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// tests for the condition where the alignment is not a power of 2.
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#include <assert.h>
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#include <malloc.h>
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#include <stdlib.h>
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#include <string.h>
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// Reduce the size of the quarantine, or the test can run out of aligned memory
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// on 32-bit for the larger alignments.
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extern "C" const char *__scudo_default_options() {
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return "QuarantineSizeMb=1";
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}
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// Sometimes the headers may not have this...
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extern "C" void *aligned_alloc (size_t alignment, size_t size);
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int main(int argc, char **argv)
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{
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void *p = nullptr;
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size_t alignment = 1U << 12;
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size_t size = 1U << 12;
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assert(argc == 2);
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if (!strcmp(argv[1], "valid")) {
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posix_memalign(&p, alignment, size);
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if (!p)
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return 1;
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free(p);
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p = aligned_alloc(alignment, size);
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if (!p)
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return 1;
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free(p);
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// Tests various combinations of alignment and sizes
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for (int i = (sizeof(void *) == 4) ? 3 : 4; i < 19; i++) {
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alignment = 1U << i;
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for (int j = 1; j < 33; j++) {
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size = 0x800 * j;
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for (int k = 0; k < 3; k++) {
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p = memalign(alignment, size - (2 * sizeof(void *) * k));
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if (!p)
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return 1;
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free(p);
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}
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}
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}
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// For larger alignment, reduce the number of allocations to avoid running
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// out of potential addresses (on 32-bit).
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for (int i = 19; i <= 24; i++) {
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for (int k = 0; k < 3; k++) {
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p = memalign(alignment, 0x1000 - (2 * sizeof(void *) * k));
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if (!p)
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return 1;
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free(p);
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}
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}
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}
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if (!strcmp(argv[1], "invalid")) {
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p = memalign(alignment - 1, size);
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free(p);
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}
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return 0;
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}
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// CHECK: ERROR: alignment is not a power of 2
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