Bug 1431803 Turn __try into if(true) and __except into else in the chromium sandbox code r?bobowen
MinGW doesn't support __try / __except. There are a few mechanisms available
to hack around it and pseudo-support it, but these are untested in Firefox.
What is tested (and works) is replacing them with if(true) and else. So
we do that to neuter them in all places. There is only one situation where
we need to actively modify the code (because it always throws an exception)
and that situation is resolved in the other patch of this bug.
MozReview-Commit-ID: IySnfxDlmW3
--- a/mozilla-config.h.in
+++ b/mozilla-config.h.in
@@ -52,11 +52,22 @@
/*
* Force-include sdkdecls.h for building the chromium sandbox code.
*
* CHROMIUM_SANDBOX_BUILD is defined in security/sandbox/moz.build.
* Note that this include path relies on the LOCAL_INCLUDES in that file.
*/
#if defined(CHROMIUM_SANDBOX_BUILD) && defined(XP_WIN)
#include "base/win/sdkdecls.h"
-#endif
+
+#ifdef __MINGW32__
+/*
+ * MinGW doesn't support __try / __except. There are a few mechanisms available
+ * to hack around it and pseudo-support it, but these are untested in Firefox.
+ * What is tested (and works) is replacing them with if(true) and else.
+ */
+#define __try if(true)
+#define __except(x) else
+
+#endif /* __MINGW32__ */
+#endif /* defined(CHROMIUM_SANDBOX_BUILD) && defined(XP_WIN) */
#endif /* MOZILLA_CONFIG_H */
