llvm-project/compiler-rt/test/dfsan/fncall.c

32 lines
707 B
C

// RUN: %clang_dfsan %s -o %t && %run %t
// RUN: %clang_dfsan -mllvm -dfsan-args-abi %s -o %t && %run %t
//
// REQUIRES: x86_64-target-arch
//
// Tests that labels are propagated through function calls.
#include <sanitizer/dfsan_interface.h>
#include <assert.h>
int f(int x) {
int j = 2;
dfsan_label j_label = 2;
dfsan_set_label(j_label, &j, sizeof(j));
return x + j;
}
int main(void) {
int i = 1;
dfsan_label i_label = 4;
dfsan_set_label(i_label, &i, sizeof(i));
dfsan_label ij_label = dfsan_get_label(f(i));
assert(dfsan_has_label(ij_label, i_label));
/* Must be consistent with the one in f(). */
dfsan_label j_label = 2;
assert(dfsan_has_label(ij_label, 2));
return 0;
}