forked from OSchip/llvm-project
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
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// RUN: %clangxx_msan -O0 %s -o %t
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// RUN: MSAN_OPTIONS=allocator_may_return_null=0 not %run %t m1 2>&1 | FileCheck %s
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// RUN: MSAN_OPTIONS=allocator_may_return_null=1 %run %t m1 2>&1
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// RUN: MSAN_OPTIONS=allocator_may_return_null=0 not %run %t psm1 2>&1 | FileCheck %s
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// RUN: MSAN_OPTIONS=allocator_may_return_null=1 %run %t psm1 2>&1
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// UNSUPPORTED: win32, freebsd
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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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void *p;
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size_t 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], "m1")) {
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p = pvalloc((uintptr_t)-1);
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assert(!p);
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assert(errno == ENOMEM);
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}
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if (!strcmp(argv[1], "psm1")) {
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p = pvalloc((uintptr_t)-(page_size - 1));
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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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// CHECK: MemorySanitizer's allocator is terminating the process
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