1*d21b3d34SFangrui Song // Build a library with origin tracking and an executable w/o origin tracking. 2*d21b3d34SFangrui Song // Test that origin tracking is enabled at runtime. 3*d21b3d34SFangrui Song // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -DBUILD_SO -fPIC -shared -o %t-so.so 4*d21b3d34SFangrui Song // RUN: %clangxx_msan -O0 %s %t-so.so -o %t && not %run %t 2>&1 | FileCheck %s 5*d21b3d34SFangrui Song 6*d21b3d34SFangrui Song #ifdef BUILD_SO 7*d21b3d34SFangrui Song 8*d21b3d34SFangrui Song #include <stdlib.h> 9*d21b3d34SFangrui Song 10*d21b3d34SFangrui Song extern "C" { my_access(int * p)11*d21b3d34SFangrui Songvoid my_access(int *p) { 12*d21b3d34SFangrui Song volatile int tmp; 13*d21b3d34SFangrui Song // Force initialize-ness check. 14*d21b3d34SFangrui Song if (*p) 15*d21b3d34SFangrui Song tmp = 1; 16*d21b3d34SFangrui Song } 17*d21b3d34SFangrui Song my_alloc(unsigned sz)18*d21b3d34SFangrui Songvoid *my_alloc(unsigned sz) { 19*d21b3d34SFangrui Song return malloc(sz); 20*d21b3d34SFangrui Song } 21*d21b3d34SFangrui Song } // extern "C" 22*d21b3d34SFangrui Song 23*d21b3d34SFangrui Song #else // BUILD_SO 24*d21b3d34SFangrui Song 25*d21b3d34SFangrui Song #include <stdlib.h> 26*d21b3d34SFangrui Song 27*d21b3d34SFangrui Song extern "C" { 28*d21b3d34SFangrui Song void my_access(int *p); 29*d21b3d34SFangrui Song void *my_alloc(unsigned sz); 30*d21b3d34SFangrui Song } 31*d21b3d34SFangrui Song main(int argc,char ** argv)32*d21b3d34SFangrui Songint main(int argc, char **argv) { 33*d21b3d34SFangrui Song int *x = (int *)my_alloc(sizeof(int)); 34*d21b3d34SFangrui Song my_access(x); 35*d21b3d34SFangrui Song delete x; 36*d21b3d34SFangrui Song 37*d21b3d34SFangrui Song // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value 38*d21b3d34SFangrui Song // CHECK: {{#0 0x.* in my_access .*dso-origin.cpp:}} 39*d21b3d34SFangrui Song // CHECK: {{#1 0x.* in main .*dso-origin.cpp:}}[[@LINE-5]] 40*d21b3d34SFangrui Song // CHECK: Uninitialized value was created by a heap allocation 41*d21b3d34SFangrui Song // CHECK: {{#0 0x.* in .*malloc}} 42*d21b3d34SFangrui Song // CHECK: {{#1 0x.* in my_alloc .*dso-origin.cpp:}} 43*d21b3d34SFangrui Song // CHECK: {{#2 0x.* in main .*dso-origin.cpp:}}[[@LINE-10]] 44*d21b3d34SFangrui Song // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*dso-origin.cpp:.* my_access}} 45*d21b3d34SFangrui Song return 0; 46*d21b3d34SFangrui Song } 47*d21b3d34SFangrui Song 48*d21b3d34SFangrui Song #endif // BUILD_SO 49