compiler-rt/test/asan/TestCases/ignorelist.cpp

   1 // Test the ignorelist functionality of ASan
   2
   3 // RUN: echo "fun:*brokenFunction*" > %tmp
   4 // RUN: echo "global:*badGlobal*" >> %tmp
   5 // RUN: echo "src:*ignorelist-extra.cpp" >> %tmp
   6 // RUN: %clangxx_asan -fsanitize-ignorelist=%tmp -O0 %s -o %t \
   7 // RUN: %p/Helpers/ignorelist-extra.cpp && %run %t 2>&1
   8 // RUN: %clangxx_asan -fsanitize-ignorelist=%tmp -O1 %s -o %t \
   9 // RUN: %p/Helpers/ignorelist-extra.cpp && %run %t 2>&1
  10 // RUN: %clangxx_asan -fsanitize-ignorelist=%tmp -O2 %s -o %t \
  11 // RUN: %p/Helpers/ignorelist-extra.cpp && %run %t 2>&1
  12 // RUN: %clangxx_asan -fsanitize-ignorelist=%tmp -O3 %s -o %t \
  13 // RUN: %p/Helpers/ignorelist-extra.cpp && %run %t 2>&1
  14
  15 // badGlobal is accessed improperly, but we ignorelisted it. Align
  16 // it to make sure memory past the end of badGlobal will be in
  17 // the same page.
  18 __attribute__((aligned(16))) int badGlobal;
  19 int readBadGlobal() {
  20   return (&badGlobal)[1];
  21 }
  22
  23 // A function which is broken, but excluded in the ignorelist.
  24 int brokenFunction(int argc) {
  25   char x[10] = {0};
  26   return x[argc * 10];  // BOOM
  27 }
  28
  29 // This function is defined in Helpers/ignorelist-extra.cpp, a source file which
  30 // is ignorelisted by name
  31 int externalBrokenFunction(int x);
  32
  33 int main(int argc, char **argv) {
  34   brokenFunction(argc);
  35   int x = readBadGlobal();
  36   externalBrokenFunction(argc);
  37   return 0;
  38 }