// 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 #include char xx[10000]; char yy[10000]; volatile int idx = 30; __attribute__((noinline)) void fn_g(char a, char b) { xx[idx] = a; xx[idx + 10] = b; } __attribute__((noinline)) void fn_f(char a, char b) { fn_g(a, b); } __attribute__((noinline)) void fn_h() { memcpy(&yy[2], &xx[2], sizeof(xx) - 4); } __attribute__((noinline)) void fn_i() { memmove(&yy[25], &yy, 7500); } int main(int argc, char *argv[]) { char volatile z1 = 0; int volatile buffer = 0; char 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(); fn_i(); dfsan_print_origin_trace(&yy[25 + 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_i.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-18]] // CHECK0: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-8]] // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at // CHECK0: #0 {{.*}} in fn_h.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-26]] // CHECK0: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-13]] // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at // CHECK0: #0 {{.*}} in fn_g.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-38]] // CHECK0: #1 {{.*}} in fn_f.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-35]] // CHECK0: #2 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-19]] // CHECK0: Origin value: {{.*}}, Taint value was created at // CHECK0: #0 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-24]] // CHECK10: Taint value 0x10 {{.*}} origin tracking // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at // CHECK10: #0 {{.*}} in fn_i.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-35]] // CHECK10: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-25]] // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at // CHECK10: #0 {{.*}} in fn_h.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-43]] // CHECK10: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-30]] // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at // CHECK10: #0 {{.*}} in fn_g.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-55]] // CHECK10: #1 {{.*}} in fn_f.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-52]] // CHECK10: #2 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-36]] // CHECK10: Origin value: {{.*}}, Taint value was created at // CHECK10: #0 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-40]]