[c++1z] Improve support for -fno-exceptions: we can't just ignore exception

specifications in this mode in C++17, since they're part of the function type,
so check and diagnose them like we would if exceptions were enabled.

Better ideas welcome.

llvm-svn: 288220

1 files changed, 0 insertions, 9 deletions

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index e2951cf1744..6114c610bb7 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -2949,15 +2949,6 @@ bool Sema::MergeFunctionDecl(FunctionDecl *New, NamedDecl *&OldD,
     // but do not necessarily update the type of New.
     if (CheckEquivalentExceptionSpec(Old, New))
       return true;
-    // If exceptions are disabled, we might not have resolved the exception spec
-    // of one or both declarations. Do so now in C++1z, so that we can properly
-    // compare the types.
-    if (getLangOpts().CPlusPlus1z) {
-      for (QualType T : {Old->getType(), New->getType()})
-        if (auto *FPT = T->getAs<FunctionProtoType>())
-          if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType()))
-            ResolveExceptionSpec(New->getLocation(), FPT);
-    }
     OldQType = Context.getCanonicalType(Old->getType());
     NewQType = Context.getCanonicalType(New->getType());