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Workaround segfault in clang's mangling code that is tickled when
attempting to mangle the declaration:
std:__ndk1::__find_detail::__find_exactly_one_checked::__matches
in the <tuple> header in the Android NDK.
This codepath is exercised by MozsearchIndexer.cpp (the searchfox
indexer) when indexing on Android. See also
https://bugs.llvm.org/show_bug.cgi?id=40747
diff --git a/clang/lib/AST/ItaniumMangle.cpp b/clang/lib/AST/ItaniumMangle.cpp
index 2dc04f2f3d8..054fc27003d 100644
--- a/clang/lib/AST/ItaniumMangle.cpp
+++ b/clang/lib/AST/ItaniumMangle.cpp
@@ -3495,16 +3495,21 @@ void CXXNameMangler::mangleExpression(const Expr *E, unsigned Arity) {
// ::= <expr-primary>
// <expr-primary> ::= L <type> <value number> E # integer literal
// ::= L <type <value float> E # floating literal
// ::= L <mangled-name> E # external name
// ::= fpT # 'this' expression
QualType ImplicitlyConvertedToType;
recurse:
+ if (!E) {
+ Out << "MOZ_WE_HACKED_AROUND_BUG_1500941";
+ return;
+ }
+
switch (E->getStmtClass()) {
case Expr::NoStmtClass:
#define ABSTRACT_STMT(Type)
#define EXPR(Type, Base)
#define STMT(Type, Base) \
case Expr::Type##Class:
#include "clang/AST/StmtNodes.inc"
// fallthrough
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