fixup! Changes after @ojhunt's review on 2025-09-09 (#157779)

Changes after @ojhunt's review on 2025-09-10 (#157779)

Author: martinuy

clang/lib/Sema/SemaDecl.cpp

@@ -8363,8 +8363,7 @@ NamedDecl *Sema::ActOnVariableDeclarator(
       NewVD->isFunctionPointerType() && !NewVD->isExternallyVisible()) {
     PointerAuthQualifier Q = NewVD->getType().getQualifiers().getPointerAuth();
     if (!Q || (!Q.isAddressDiscriminated() && Q.getExtraDiscriminator() == 0)) {
-      Diag(NewVD->getLocation(), diag::warn_ptrauth_weak_schema)
-          << NewVD << (Q ? 0 : 1);
+      Diag(NewVD->getLocation(), diag::warn_ptrauth_weak_schema) << NewVD << !Q;
     }
   }
 

clang/test/Sema/ptrauth-weak-schema.c

@@ -5,6 +5,10 @@
 
 #include <ptrauth.h>
 
+#if defined(__PTRAUTH__) == defined(NO_PTRAUTH)
+#error expected pointer authentication state does not match actual
+#endif
+
 #if defined(NO_PTRAUTH)
 #define FN_PTR_AUTH(address_diversity, constant_discriminator)
 #else