Now that C++17 is official (https://www.iso.org/standard/68564.html), start changing the C++1z terminology over to C++17. NFC intended, these are all mechanical changes.

llvm-svn: 319688
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index 8680d3d..268be94 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -10699,7 +10699,7 @@
     return true;
 
   auto *FPT = FD->getType()->castAs<FunctionProtoType>();
-  if (S.getLangOpts().CPlusPlus1z &&
+  if (S.getLangOpts().CPlusPlus17 &&
       isUnresolvedExceptionSpec(FPT->getExceptionSpecType()) &&
       !S.ResolveExceptionSpec(Loc, FPT))
     return true;