[SYCL] Suppress modal error message box during plugins loading on Windows (intel#3493)

Signed-off-by: Sergey V Maslov <[email protected]>

Author: smaslov-intel

sycl/source/detail/windows_pi.cpp

@@ -18,7 +18,18 @@ namespace detail {
 namespace pi {
 
 void *loadOsLibrary(const std::string &PluginPath) {
-  return (void *)LoadLibraryA(PluginPath.c_str());
+  // Tells the system to not display the critical-error-handler message box.
+  // Instead, the system sends the error to the calling process.
+  // This is crucial for graceful handling of plugins that couldn't be
+  // loaded, e.g. due to missing native run-times.
+  // TODO: add reporting in case of an error.
+  // NOTE: we restore the old mode to not affect user app behavior.
+  //
+  UINT SavedMode = SetErrorMode(SEM_FAILCRITICALERRORS);
+  auto Result = (void *)LoadLibraryA(PluginPath.c_str());
+  (void)SetErrorMode(SavedMode);
+
+  return Result;
 }
 
 int unloadOsLibrary(void *Library) {