compiler-rt/test/asan/TestCases/suppressions-function.cpp

   1 // Check that without suppressions, we catch the issue.
   2 // RUN: %clangxx_asan -O0 %s -o %t
   3 // RUN: not %run %t 2>&1 | FileCheck --check-prefix=CHECK-CRASH %s
   4
   5 // RUN: echo "interceptor_via_fun:crash_function" > %t.supp
   6 // RUN: %clangxx_asan -O0 %s -o %t && %env_asan_opts=suppressions='"%t.supp"' %run %t 2>&1 | FileCheck --check-prefix=CHECK-IGNORE %s
   7 // RUN: %clangxx_asan -O3 %s -o %t && %env_asan_opts=suppressions='"%t.supp"' %run %t 2>&1 | FileCheck --check-prefix=CHECK-IGNORE %s
   8
   9 // XFAIL: android
  10 // UNSUPPORTED: ios
  11
  12 // FIXME: atos does not work for inlined functions, yet llvm-symbolizer
  13 // does not always work with debug info on Darwin.
  14 // UNSUPPORTED: darwin
  15
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19
  20 void crash_function() {
  21   char *a = (char *)malloc(6);
  22   free(a);
  23   size_t len = strlen(a); // BOOM
  24   fprintf(stderr, "strlen ignored, len = %zu\n", len);
  25 }
  26
  27 int main() {
  28   crash_function();
  29 }
  30
  31 // CHECK-CRASH: AddressSanitizer: heap-use-after-free
  32 // CHECK-CRASH-NOT: strlen ignored
  33 // CHECK-IGNORE-NOT: AddressSanitizer: heap-use-after-free
  34 // CHECK-IGNORE: strlen ignored