src/libcompiler_builtins/compiler-rt/test/asan/TestCases/Posix/coverage-module-unloaded.cc

   1 // Check that unloading a module doesn't break coverage dumping for remaining
   2 // modules.
   3 // RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard -DSHARED %s -shared -o %dynamiclib1 -fPIC
   4 // RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard -DSHARED %s -shared -o %dynamiclib2 -fPIC
   5 // RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard %s %libdl -o %t.exe
   6 // RUN: mkdir -p %t.tmp/coverage-module-unloaded && cd %t.tmp/coverage-module-unloaded
   7 // RUN: %env_asan_opts=coverage=1:verbosity=1 %run %t.exe %dynamiclib1 %dynamiclib2 2>&1        | FileCheck %s
   8 // RUN: %env_asan_opts=coverage=1:verbosity=1 %run %t.exe %dynamiclib1 %dynamiclib2 foo 2>&1    | FileCheck %s
   9 //
  10 // https://code.google.com/p/address-sanitizer/issues/detail?id=263
  11 // XFAIL: android
  12 // UNSUPPORTED: ios
  13
  14 #include <assert.h>
  15 #include <dlfcn.h>
  16 #include <stdio.h>
  17 #include <unistd.h>
  18
  19 #ifdef SHARED
  20 extern "C" {
  21 void bar() { printf("bar\n"); }
  22 }
  23 #else
  24
  25 int main(int argc, char **argv) {
  26   fprintf(stderr, "PID: %d\n", getpid());
  27   assert(argc > 2);
  28   void *handle1 = dlopen(argv[1], RTLD_LAZY);  // %dynamiclib1
  29   assert(handle1);
  30   void (*bar1)() = (void (*)())dlsym(handle1, "bar");
  31   assert(bar1);
  32   bar1();
  33   void *handle2 = dlopen(argv[2], RTLD_LAZY);  // %dynamiclib2
  34   assert(handle2);
  35   void (*bar2)() = (void (*)())dlsym(handle2, "bar");
  36   assert(bar2);
  37   bar2();
  38
  39   // It matters whether the unloaded module has a higher or lower address range
  40   // than the remaining one. Make sure to test both cases.
  41   if (argc < 2)
  42     dlclose(bar1 < bar2 ? handle1 : handle2);
  43   else
  44     dlclose(bar1 < bar2 ? handle2 : handle1);
  45   return 0;
  46 }
  47 #endif
  48
  49 // CHECK: PID: [[PID:[0-9]+]]
  50 // CHECK-DAG: exe{{.*}}[[PID]].sancov: {{.*}}PCs written
  51 // CHECK-DAG: dynamic{{.*}}[[PID]].sancov: {{.*}}PCs written