[asan/win] Fix wrong TerminateProcess exit code

Add a test for it.

llvm-svn: 286608

compiler-rt/lib/sanitizer_common/sanitizer_win.cc

@@ -659,7 +659,7 @@ void internal__exit(int exitcode) {
   // so add our own breakpoint here.
   if (::IsDebuggerPresent())
     __debugbreak();
-  TerminateProcess(GetCurrentProcess(), 3);
+  TerminateProcess(GetCurrentProcess(), exitcode);
 }
 
 uptr internal_ftruncate(fd_t fd, uptr size) {

compiler-rt/test/asan/TestCases/exitcode.cc

@@ -0,0 +1,123 @@
+// RUN: %clangxx_asan -g %stdcxx11 -Wno-deprecated-declarations %s -o %t
+// RUN: %env_asan_opts=exitcode=42 %t | FileCheck %s
+
+// CHECK: got expected 42 exit code
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#ifdef _WIN32
+#include <windows.h>
+
+int spawn_child(char **argv) {
+  // Set an environment variable to tell the child process to interrupt
+  // itself.
+  if (!SetEnvironmentVariableW(L"CRASH_FOR_TEST", L"1")) {
+    printf("SetEnvironmentVariableW failed (0x%8lx).\n", GetLastError());
+    fflush(stdout);
+    exit(1);
+  }
+
+  STARTUPINFOW si;
+  memset(&si, 0, sizeof(si));
+  si.cb = sizeof(si);
+
+  PROCESS_INFORMATION pi;
+  memset(&pi, 0, sizeof(pi));
+
+  if (!CreateProcessW(nullptr,           // No module name (use command line)
+                      GetCommandLineW(), // Command line
+                      nullptr,           // Process handle not inheritable
+                      nullptr,           // Thread handle not inheritable
+                      TRUE,              // Set handle inheritance to TRUE
+                      0,                 // No flags
+                      nullptr,           // Use parent's environment block
+                      nullptr,           // Use parent's starting directory
+                      &si, &pi)) {
+    printf("CreateProcess failed (0x%08lx).\n", GetLastError());
+    fflush(stdout);
+    exit(1);
+  }
+
+  WaitForSingleObject(pi.hProcess, INFINITE);
+
+  DWORD exit_code;
+  if (!GetExitCodeProcess(pi.hProcess, &exit_code)) {
+    printf("GetExitCodeProcess failed (0x%08lx).\n", GetLastError());
+    fflush(stdout);
+    exit(1);
+  }
+
+  CloseHandle(pi.hProcess);
+  CloseHandle(pi.hThread);
+
+  return exit_code;
+}
+#else
+#include <spawn.h>
+#include <errno.h>
+#include <sys/wait.h>
+
+#if defined(__APPLE__) && !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)
+#define USE_NSGETENVIRON 1
+#else
+#define USE_NSGETENVIRON 0
+#endif
+
+#if !USE_NSGETENVIRON
+extern char **environ;
+#else
+#include <crt_externs.h> // _NSGetEnviron
+#endif
+
+int spawn_child(char **argv) {
+  setenv("CRASH_FOR_TEST", "1", 1);
+
+#if !USE_NSGETENVIRON
+  char **envp = environ;
+#else
+  char **envp = *_NSGetEnviron();
+#endif
+
+  pid_t pid;
+  int err = posix_spawn(&pid, argv[0], nullptr, nullptr, argv, envp);
+  if (err) {
+    printf("posix_spawn failed: %d\n", err);
+    fflush(stdout);
+    exit(1);
+  }
+
+  // Wait until the child exits.
+  int status;
+  pid_t wait_result_pid;
+  do {
+    wait_result_pid = waitpid(pid, &status, 0);
+  } while (wait_result_pid == -1 && errno == EINTR);
+
+  if (wait_result_pid != pid || !WIFEXITED(status)) {
+    printf("error in waitpid\n");
+    fflush(stdout);
+    exit(1);
+  }
+
+  // Return the exit status.
+  return WEXITSTATUS(status);
+}
+#endif
+
+int main(int argc, char **argv) {
+  int r = 0;
+  if (getenv("CRASH_FOR_TEST")) {
+    // Generate an asan report to test ASAN_OPTIONS=exitcode=42
+    int *p = new int;
+    delete p;
+    r = *p;
+  } else {
+    int exit_code = spawn_child(argv);
+    if (exit_code == 42) {
+      printf("got expected 42 exit code\n");
+      fflush(stdout);
+    }
+  }
+  return r;
+}