test/asan/TestCases/Linux/coverage.cc

   1 // RUN: %clangxx_asan -mllvm -asan-coverage=1 -DSHARED %s -shared -o %t.so -fPIC
   2 // RUN: %clangxx_asan -mllvm -asan-coverage=1 %s   -o %t -Wl,-R. %t.so
   3 // RUN: export ASAN_OPTIONS=coverage=1:verbosity=1
   4 // RUN: %t 2>&1         | FileCheck %s --check-prefix=CHECK-main
   5 // RUN: %t foo 2>&1     | FileCheck %s --check-prefix=CHECK-foo
   6 // RUN: %t bar 2>&1     | FileCheck %s --check-prefix=CHECK-bar
   7 // RUN: %t foo bar 2>&1 | FileCheck %s --check-prefix=CHECK-foo-bar
   8 // RUN: not %t foo bar 1 2  2>&1 | FileCheck %s --check-prefix=CHECK-report
   9 //
  10 // https://code.google.com/p/address-sanitizer/issues/detail?id=263
  11 // XFAIL: android
  12
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <unistd.h>
  16
  17 #ifdef SHARED
  18 void bar() { printf("bar\n"); }
  19 #else
  20 __attribute__((noinline))
  21 void foo() { printf("foo\n"); }
  22 extern void bar();
  23
  24 int G[4];
  25
  26 int main(int argc, char **argv) {
  27   fprintf(stderr, "PID: %d\n", getpid());
  28   for (int i = 1; i < argc; i++) {
  29     if (!strcmp(argv[i], "foo"))
  30       foo();
  31     if (!strcmp(argv[i], "bar"))
  32       bar();
  33   }
  34   return G[argc];  // Buffer overflow if argc >= 4.
  35 }
  36 #endif
  37
  38 // CHECK-main: PID: [[PID:[0-9]+]]
  39 // CHECK-main: [[PID]].sancov: 1 PCs written
  40 // CHECK-main-NOT: .so.[[PID]]
  41 //
  42 // CHECK-foo: PID: [[PID:[0-9]+]]
  43 // CHECK-foo: [[PID]].sancov: 2 PCs written
  44 // CHECK-foo-NOT: .so.[[PID]]
  45 //
  46 // CHECK-bar: PID: [[PID:[0-9]+]]
  47 // CHECK-bar: [[PID]].sancov: 1 PCs written
  48 // CHECK-bar: .so.[[PID]].sancov: 1 PCs written
  49 //
  50 // CHECK-foo-bar: PID: [[PID:[0-9]+]]
  51 // CHECK-foo-bar: [[PID]].sancov: 2 PCs written
  52 // CHECK-foo-bar: so.[[PID]].sancov: 1 PCs written
  53 //
  54 // CHECK-report: AddressSanitizer: global-buffer-overflow
  55 // CHECK-report: PCs written