Implement name mangling for lambda expressions that occur within the
default arguments of function parameters. This simple-sounding task is
complicated greatly by two issues:
(1) Default arguments aren't actually a real context, so we need to
maintain extra state within lambda expressions to track when a
lambda was actually in a default argument.
(2) At the time that we parse a default argument, the FunctionDecl
doesn't exist yet, so lambda closure types end up in the enclosing
context. It's not clear that we ever want to change that, so instead
we introduce the notion of the "effective" context of a declaration
for the purposes of name mangling.
llvm-svn: 151011
diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp
index add89ea..5c3a1e9 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -4333,6 +4333,7 @@
Record.push_back(Lambda.NumCaptures);
Record.push_back(Lambda.NumExplicitCaptures);
Record.push_back(Lambda.ManglingNumber);
+ AddDeclRef(Lambda.ContextDecl, Record);
for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
LambdaExpr::Capture &Capture = Lambda.Captures[I];
AddSourceLocation(Capture.getLocation(), Record);