compiler-rt/test/asan/TestCases/Linux/local_alias.cpp

   1 // Test that mixing instrumented and non-instrumented code doesn't lead to crash.
   2 // Build two modules (one is instrumented, another is not) that have globals
   3 // with same names. Check, that ASan doesn't crash with CHECK failure or
   4 // false positive global-buffer-overflow due to sanitized library poisons
   5 // globals from non-sanitized one.
   6 //
   7 // RUN: %clangxx_asan -DBUILD_INSTRUMENTED_DSO=1 -fPIC -shared -mllvm -asan-use-private-alias %s -o %dynamiclib1
   8 // RUN: %clangxx -DBUILD_UNINSTRUMENTED_DSO=1 -fPIC -shared %s -o %dynamiclib2
   9 // RUN: %clangxx %s -c -mllvm -asan-use-private-alias -o %t.o
  10 // RUN: %clangxx_asan %t.o %ld_flags_rpath_exe2 %ld_flags_rpath_exe1 -o %t-EXE
  11 // RUN: %run %t-EXE
  12
  13 #if defined (BUILD_INSTRUMENTED_DSO)
  14 long h = 15;
  15 long f = 4;
  16 long foo(long *p) {
  17   return *p;
  18 }
  19 #elif defined (BUILD_UNINSTRUMENTED_DSO)
  20 long foo(long *);
  21 long h = 12;
  22 long i = 13;
  23 long f = 5;
  24
  25 int bar() {
  26   if (foo(&f) != 5 || foo(&h) != 12 || foo(&i) != 13)
  27     return 1;
  28   return 0;
  29 }
  30 #else
  31 extern int bar();
  32
  33 int main() {
  34   return bar();
  35 }
  36 #endif