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// RUN: %clang_dfsan -gmlt -DOFFSET=0 -mllvm -dfsan-track-origins=1 %s -o %t && \
// RUN: %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK0 < %t.out
//
// RUN: %clang_dfsan -gmlt -DOFFSET=10 -mllvm -dfsan-track-origins=1 %s -o %t && \
// RUN: %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK10 < %t.out
#include <sanitizer/dfsan_interface.h>
#include <string.h>
int xx[10000];
int yy[10000];
volatile int idx = 30;
__attribute__((noinline))
void fn_g(int a, int b) {
xx[idx] = a; xx[idx + 10] = b;
}
__attribute__((noinline))
void fn_f(int a, int b) {
fn_g(a, b);
}
__attribute__((noinline))
void fn_h() {
memcpy(&yy, &xx, sizeof(xx));
}
int main(int argc, char *argv[]) {
int volatile z1 = 0;
int volatile z2 = 0;
dfsan_set_label(8, (void *)&z1, sizeof(z1));
dfsan_set_label(16, (void *)&z2, sizeof(z2));
fn_f(z1, z2);
fn_h();
dfsan_print_origin_trace(&yy[idx + OFFSET], NULL);
return 0;
}
// CHECK0: Taint value 0x8 {{.*}} origin tracking ()
// CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
// CHECK0: #0 {{.*}} in fn_h.dfsan {{.*}}origin_memcpy.c:[[@LINE-16]]
// CHECK0: #1 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-8]]
// CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
// CHECK0: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memcpy.c:[[@LINE-30]]
// CHECK0: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memcpy.c:[[@LINE-26]]
// CHECK0: #2 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-14]]
// CHECK0: Origin value: {{.*}}, Taint value was created at
// CHECK0: #0 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-19]]
// CHECK10: Taint value 0x10 {{.*}} origin tracking ()
// CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
// CHECK10: #0 {{.*}} in fn_h.dfsan {{.*}}origin_memcpy.c:[[@LINE-29]]
// CHECK10: #1 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-21]]
// CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
// CHECK10: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memcpy.c:[[@LINE-43]]
// CHECK10: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memcpy.c:[[@LINE-39]]
// CHECK10: #2 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-27]]
// CHECK10: Origin value: {{.*}}, Taint value was created at
// CHECK10: #0 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-31]]
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