[asan] Fix Windows tests

Fix Windows after #101853.

Author: vitalybuka

compiler-rt/test/asan/TestCases/Windows/null_deref_multiple_dlls.cpp

@@ -12,31 +12,34 @@
 #include <malloc.h>
 #include <string.h>
 
-extern "C" {
 #if defined(EXE)
+extern "C" {
 __declspec(dllimport) void foo1();
 __declspec(dllimport) void foo2();
+}
 
 int main() {
   foo1();
   foo2();
 }
 #elif defined(DLL1)
+extern "C" {
 __declspec(dllexport) void foo1() {}
+}
 #elif defined(DLL2)
-__attribute__((noinline))
-static void NullDeref(int *ptr) {
+extern "C" {
+__attribute__((noinline)) static void NullDeref(int *ptr) {
   // CHECK: ERROR: AddressSanitizer: access-violation on unknown address
   // CHECK:   {{0x0*000.. .*pc 0x.*}}
-  ptr[10]++;  // BOOM
+  ptr[10]++; // BOOM
 }
 
 __declspec(dllexport) void foo2() {
-  NullDeref((int*)0);
+  NullDeref((int *)0);
   // CHECK: {{    #1 0x.* in foo2.*null_deref_multiple_dlls.cpp:}}[[@LINE-1]]
   // CHECK: AddressSanitizer can not provide additional info.
 }
+}
 #else
-# error oops!
+#  error oops!
 #endif
-}

compiler-rt/test/asan/TestCases/Windows/report_globals_reload_dll.cpp

@@ -7,7 +7,6 @@
 #include <stdio.h>
 #include <string.h>
 
-extern "C" {
 #if defined(EXE)
 int main(int argc, char **argv) {
   if (argc != 2) {
@@ -40,12 +39,13 @@ int main(int argc, char **argv) {
   fflush(0);
 }
 #elif defined(DLL)
+extern "C" {
 BOOL WINAPI DllMain(HMODULE, DWORD reason, LPVOID) {
   printf("in DLL(reason=%d)\n", (int)reason);
   fflush(0);
   return TRUE;
 }
+}
 #else
 # error oops!
 #endif
-}

compiler-rt/test/asan/TestCases/Windows/report_globals_vs_freelibrary.cpp

@@ -6,7 +6,6 @@
 #include <stdio.h>
 #include <string.h>
 
-extern "C" {
 #if defined(EXE)
 int main(int argc, char **argv) {
   if (argc != 2) {
@@ -36,12 +35,13 @@ int main(int argc, char **argv) {
   fflush(0);
 }
 #elif defined(DLL)
+extern "C" {
 BOOL WINAPI DllMain(HMODULE, DWORD reason, LPVOID) {
   printf("in DLL(reason=%d)\n", (int)reason);
   fflush(0);
   return TRUE;
 }
+}
 #else
 # error oops!
 #endif
-}