1 // RUN: %clangxx_asan -O0 %s %p/Helpers/underflow.cpp -o %t && not %run %t 2>&1 | FileCheck %s 2 // RUN: %clangxx_asan -O1 %s %p/Helpers/underflow.cpp -o %t && not %run %t 2>&1 | FileCheck %s 3 // RUN: %clangxx_asan -O2 %s %p/Helpers/underflow.cpp -o %t && not %run %t 2>&1 | FileCheck %s 4 // RUN: %clangxx_asan -O3 %s %p/Helpers/underflow.cpp -o %t && not %run %t 2>&1 | FileCheck %s 5 6 int XXX[2] = {2, 3}; 7 extern int YYY[]; 8 #include <string.h> main(int argc,char ** argv)9int main(int argc, char **argv) { 10 memset(XXX, 0, 2*sizeof(int)); 11 // CHECK: {{READ of size 4 at 0x.* thread T0}} 12 // CHECK: {{ #0 0x.* in main .*global-underflow.cpp:}}[[@LINE+3]] 13 // CHECK: {{0x.* is located 4 bytes to the left of global variable}} 14 // CHECK: {{.*YYY.* of size 12}} 15 int res = YYY[-1]; 16 return res; 17 } 18