mprobe.cpp
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// RUN: %clangxx %s -o %t && %run %t 2>&1 | FileCheck %s
// UNSUPPORTED: android, ubsan
#include <stdio.h>
#include <stdlib.h>
#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 2)
#include <mcheck.h>
#else
#define MCHECK_OK 0
extern "C" int mcheck(void (*abortfunc)(int mstatus));
extern "C" int mcheck_pedantic(void (*abortfunc)(int mstatus));
extern "C" int mprobe(void *ptr);
#endif
void check_heap() {
void *p = malloc(1000);
int res = mprobe(p);
if (res == MCHECK_OK)
printf("Success!\n");
free(p);
}
int main(int argc, char *argv[]) {
void *p;
if (mcheck(NULL) != 0) {
fprintf(stderr, "mcheck() failed\n");
exit(EXIT_FAILURE);
}
check_heap();
// CHECK: Success!
if (mcheck_pedantic(NULL) != 0) {
fprintf(stderr, "mcheck_pedantic() failed\n");
exit(EXIT_FAILURE);
}
check_heap();
// CHECK: Success!
return 0;
}