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1// RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t2//3// RUN: %run %t >%t.out 2>&14// RUN: FileCheck %s < %t.out5//6// RUN: env DFSAN_OPTIONS=origin_history_size=2 %run %t >%t.out 2>&17// RUN: FileCheck %s --check-prefix=CHECK2 < %t.out8//9// RUN: env DFSAN_OPTIONS=origin_history_size=0 %run %t >%t.out 2>&110// RUN: FileCheck %s --check-prefix=CHECK0 < %t.out11 12#include <sanitizer/dfsan_interface.h>13 14#include <stdio.h>15 16__attribute__((noinline)) int foo(int a, int b) { return a + b; }17 18int main(int argc, char *argv[]) {19 int a = 10;20 dfsan_set_label(8, &a, sizeof(a));21 int c = 0;22 for (int i = 0; i < 17; ++i) {23 c = foo(a, c);24 printf("%lx", (unsigned long)&c);25 }26 dfsan_print_origin_trace(&c, NULL);27}28 29// CHECK: Taint value 0x8 {{.*}} origin tracking ()30// CHECK-COUNT 14: Origin value: {{.*}}, Taint value was stored to memory at31// CHECK: Origin value: {{.*}}, Taint value was created at32 33// CHECK2: Taint value 0x8 {{.*}} origin tracking ()34// CHECK2: Origin value: {{.*}}, Taint value was stored to memory at35// CHECK2: Origin value: {{.*}}, Taint value was created at36 37// CHECK0: Taint value 0x8 {{.*}} origin tracking ()38// CHECK0-COUNT 16: Origin value: {{.*}}, Taint value was stored to memory at39// CHECK0: Origin value: {{.*}}, Taint value was created at40