[SYCL] Fix Windows Shutdown Failure (#4040)

bso-intel · web-flow · commit 1dea75712d60 · 2021-07-06T10:09:35.000+03:00
The function DllMain() is missing important attribute, so shutdown was never called before.

Signed-off-by: Byoungro So &lt;byoungro.so@intel.com&gt;
diff --git a/sycl/source/detail/global_handler.cpp b/sycl/source/detail/global_handler.cpp
@@ -151,7 +151,9 @@ void shutdown() {
 }
 
 #ifdef _WIN32
-BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved) {
+extern "C" __SYCL_EXPORT BOOL WINAPI DllMain(HINSTANCE hinstDLL,
+                                             DWORD fdwReason,
+                                             LPVOID lpReserved) {
   // Perform actions based on the reason for calling.
   switch (fdwReason) {
   case DLL_PROCESS_DETACH:
