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// RUN: %clangxx_asan -O0 %s -o %t -mllvm -asan-detect-invalid-pointer-pair
// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1 %run %t
#include <assert.h>
#include <stdlib.h>
int foo(char *p, char *q) {
return p <= q;
}
char global[8192] = {};
char small_global[7] = {};
int main() {
// Heap allocated memory.
char *p = (char *)malloc(42);
int r = foo(p, NULL);
free(p);
p = (char *)malloc(1024);
foo(NULL, p);
free(p);
p = (char *)malloc(4096);
foo(p, NULL);
free(p);
// Global variable.
foo(&global[0], NULL);
foo(&global[1000], NULL);
p = &small_global[0];
foo(p, NULL);
// Stack variable.
char stack[10000];
foo(&stack[0], NULL);
foo(NULL, &stack[9000]);
return 0;
}
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