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1// RUN: %clang_dfsan -gmlt -DOFFSET=0 -mllvm -dfsan-track-origins=1 %s -o %t && \2// RUN: %run %t >%t.out 2>&13// RUN: FileCheck %s --check-prefix=CHECK0 < %t.out4// 5// RUN: %clang_dfsan -gmlt -DOFFSET=10 -mllvm -dfsan-track-origins=1 %s -o %t && \6// RUN: %run %t >%t.out 2>&17// RUN: FileCheck %s --check-prefix=CHECK10 < %t.out8 9#include <sanitizer/dfsan_interface.h>10 11#include <string.h>12 13int xx[10000];14 15volatile int idx = 30;16 17__attribute__((noinline))18void fn_g(int a, int b) {19 memset(&xx[idx], a, sizeof(a));20 memset(&xx[idx + 10], b, sizeof(b));21}22 23__attribute__((noinline))24void fn_f(int a, int b) {25 fn_g(a, b);26}27 28int main(int argc, char *argv[]) {29 int volatile z1;30 int volatile z2;31 dfsan_set_label(8, (void *)&z1, sizeof(z1));32 dfsan_set_label(16, (void *)&z2, sizeof(z2));33 fn_f(z1, z2);34 dfsan_print_origin_trace(&xx[idx + OFFSET], NULL);35 return 0;36}37 38// CHECK0: Taint value 0x8 {{.*}} origin tracking ()39// CHECK0: Origin value: {{.*}}, Taint value was created at40 41// CHECK0: #0 {{.*}} in main {{.*}}origin_memset.c:[[@LINE-10]]42 43// CHECK10: Taint value 0x10 {{.*}} origin tracking ()44// CHECK10: Origin value: {{.*}}, Taint value was created at45 46// CHECK10: #0 {{.*}} in main {{.*}}origin_memset.c:[[@LINE-14]]47