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// Test shadow faults during esan initialization as well as
// faults during dlsym's calloc during interceptor init.
//
// RUN: %clang_esan_wset %s -o %t
// RUN: %run %t 2>&1 | FileCheck %s
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// Our goal is to emulate an instrumented allocator, whose calloc
// invoked from dlsym will trigger shadow faults, to test an
// early shadow fault during esan interceptor init.
// We do this by replacing calloc:
void *calloc(size_t size, size_t n) {
// Unfortunately we can't print anything to make the test
// ensure we got here b/c the sanitizer interceptors can't
// handle that during interceptor init.
// Ensure we trigger a shadow write fault:
int x[16];
x[0] = size;
// Now just emulate calloc.
void *res = malloc(size*n);
memset(res, 0, size*n);
return res;
}
int main(int argc, char **argv) {
printf("all done\n");
return 0;
}
// CHECK: all done
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