45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
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// RUN: %clangxx_hwasan -O0 %s -o %t
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t m1 2>&1 | FileCheck %s
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t m1 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t psm1 2>&1 | FileCheck %s
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t psm1 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
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// UNSUPPORTED: android
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// Checks that pvalloc overflows are caught. If the allocator is allowed to
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// return null, the errno should be set to ENOMEM.
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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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int main(int argc, char *argv[]) {
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assert(argc == 2);
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const char *action = argv[1];
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const size_t page_size = sysconf(_SC_PAGESIZE);
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void *p = nullptr;
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if (!strcmp(action, "m1")) {
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p = pvalloc((uintptr_t)-1);
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} else if (!strcmp(action, "psm1")) {
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p = pvalloc((uintptr_t)-(page_size - 1));
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} else {
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assert(0);
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}
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fprintf(stderr, "errno: %d\n", errno);
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return p != nullptr;
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}
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// CHECK: {{ERROR: HWAddressSanitizer: pvalloc parameters overflow: size .* rounded up to system page size .* cannot be represented in type size_t}}
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// CHECK: {{#0 0x.* in .*pvalloc}}
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// CHECK: {{#1 0x.* in main .*pvalloc-overflow.cpp:}}
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// CHECK: SUMMARY: HWAddressSanitizer: pvalloc-overflow {{.*}} in main
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// CHECK-NULL: errno: 12
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