compiler-rt/test/msan/recover-dso.cpp

   1 // RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
   2 // FileCheck --check-prefix=CHECK-RECOVER %s <%t.out
   3 // RUN: %clangxx_msan -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
   4 // FileCheck %s <%t.out
   5 // RUN: %clangxx_msan -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
   6 // FileCheck --check-prefix=CHECK-RECOVER %s <%t.out
   7
   8 // Test how -fsanitize-recover=memory and MSAN_OPTIONS=keep_going affect reports
   9 // from interceptors.
  10 // -fsanitize-recover=memory provides the default value of keep_going flag, but is
  11 // always overwritten by MSAN_OPTIONS
  12
  13 // RUN: %clangxx_msan -fsanitize-recover=memory -O0 %s -o %t && not %run %t >%t.out 2>&1
  14 // FileCheck --check-prefix=CHECK-RECOVER %s <%t.out
  15 // RUN: %clangxx_msan -fsanitize-recover=memory -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
  16 // FileCheck %s <%t.out
  17 // RUN: %clangxx_msan -fsanitize-recover=memory -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
  18 // FileCheck --check-prefix=CHECK-RECOVER %s <%t.out
  19
  20 // Test how legacy -mllvm -msan-keep-going and MSAN_OPTIONS=keep_going affect
  21 // reports from interceptors.
  22
  23 // RUN: %clangxx_msan -mllvm -msan-keep-going=1 -O0 %s -o %t && not %run %t >%t.out 2>&1
  24 // FileCheck --check-prefix=CHECK-RECOVER %s <%t.out
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 int main(int argc, char **argv) {
  31   char *volatile x = (char*)malloc(5 * sizeof(char));
  32   x[4] = 0;
  33   if (strlen(x) < 3)
  34     exit(0);
  35   fprintf(stderr, "Done\n");
  36   // CHECK-NOT: Done
  37   // CHECK-RECOVER: Done
  38   return 0;
  39 }