Track the result of evaluating a computed noexcept specification on the

FunctionProtoType.

We previously re-evaluated the expression each time we wanted to know whether
the type is noexcept or not. We now evaluate the expression exactly once.

This is not quite "no functional change": it fixes a crasher bug during AST
deserialization where we would try to evaluate the noexcept specification in a
situation where we have not deserialized sufficient portions of the AST to
permit such evaluation.

llvm-svn: 331428

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp
index fb7276b2f8d..c60b4b2eb77 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -294,7 +294,7 @@ static void addExceptionSpec(const FunctionProtoType *T,
     Record.push_back(T->getNumExceptions());
     for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I)
       Record.AddTypeRef(T->getExceptionType(I));
-  } else if (T->getExceptionSpecType() == EST_ComputedNoexcept) {
+  } else if (isComputedNoexcept(T->getExceptionSpecType())) {
     Record.AddStmt(T->getNoexceptExpr());
   } else if (T->getExceptionSpecType() == EST_Uninstantiated) {
     Record.AddDeclRef(T->getExceptionSpecDecl());