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// RUN: %clangxx_msan -O0 %s -o %t
// RUN: MSAN_OPTIONS=allocator_may_return_null=0 not %run %t m1 2>&1 | FileCheck %s
// RUN: MSAN_OPTIONS=allocator_may_return_null=1 %run %t m1 2>&1
// RUN: MSAN_OPTIONS=allocator_may_return_null=0 not %run %t psm1 2>&1 | FileCheck %s
// RUN: MSAN_OPTIONS=allocator_may_return_null=1 %run %t psm1 2>&1
// UNSUPPORTED: win32, freebsd, netbsd
// Checks that pvalloc overflows are caught. If the allocator is allowed to
// return null, the errno should be set to ENOMEM.
#include <assert.h>
#include <errno.h>
#include <malloc.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
int main(int argc, char *argv[]) {
void *p;
size_t 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], "m1")) {
p = pvalloc((uintptr_t)-1);
assert(!p);
assert(errno == ENOMEM);
}
if (!strcmp(argv[1], "psm1")) {
p = pvalloc((uintptr_t)-(page_size - 1));
assert(!p);
assert(errno == ENOMEM);
}
return 0;
}
// CHECK: MemorySanitizer's allocator is terminating the process
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