[MS ABI] Disregard restrictive exception specifications
MSVC treats all non-empty exception specifications the same way: all
exceptions are permitted. The .xdata tables provide a way to
efficiently lower exception specifications *but* this probably has to be
implemented as a catch-all/rethrow mechanism instead of the Itanium way.
This fixes PR23092.
llvm-svn: 233787
diff --git a/clang/lib/CodeGen/CGException.cpp b/clang/lib/CodeGen/CGException.cpp
index 1925c57..f10d2e1 100644
--- a/clang/lib/CodeGen/CGException.cpp
+++ b/clang/lib/CodeGen/CGException.cpp
@@ -458,6 +458,10 @@
EHStack.pushTerminate();
}
} else if (EST == EST_Dynamic || EST == EST_DynamicNone) {
+ // TODO: Revisit exception specifications for the MS ABI. There is a way to
+ // encode these in an object file but MSVC doesn't do anything with it.
+ if (getTarget().getCXXABI().isMicrosoft())
+ return;
unsigned NumExceptions = Proto->getNumExceptions();
EHFilterScope *Filter = EHStack.pushFilter(NumExceptions);
@@ -532,6 +536,10 @@
EHStack.popTerminate();
}
} else if (EST == EST_Dynamic || EST == EST_DynamicNone) {
+ // TODO: Revisit exception specifications for the MS ABI. There is a way to
+ // encode these in an object file but MSVC doesn't do anything with it.
+ if (getTarget().getCXXABI().isMicrosoft())
+ return;
EHFilterScope &filterScope = cast<EHFilterScope>(*EHStack.begin());
emitFilterDispatchBlock(*this, filterScope);
EHStack.popFilter();