[clang][NFC] Make all C++ DR tests run in full range of language modes (

llvm#121688)

This patch plugs holes in RUN lines in C++ DR tests, making sure they
are run in C++98 through C++26, with the exception of C++03, which in
Clang is synonymous to C++98.

clang/test/CXX/drs/cwg0xx.cpp

@@ -4,6 +4,7 @@
 // RUN: %clang_cc1 -std=c++17 %s -verify=expected,since-cxx11,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors -triple %itanium_abi_triple
 // RUN: %clang_cc1 -std=c++20 %s -verify=expected,since-cxx11,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors -triple %itanium_abi_triple
 // RUN: %clang_cc1 -std=c++23 %s -verify=expected,since-cxx11,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors -triple %itanium_abi_triple
+// RUN: %clang_cc1 -std=c++2c %s -verify=expected,since-cxx11,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors -triple %itanium_abi_triple
 
 #if __cplusplus == 199711L
 #define static_assert(...) __extension__ _Static_assert(__VA_ARGS__)

clang/test/CXX/drs/cwg10xx.cpp

@@ -4,6 +4,7 @@
 // RUN: %clang_cc1 -std=c++17 %s -verify=expected,since-cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++20 %s -verify=expected,since-cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++23 %s -verify=expected,since-cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++2c %s -verify=expected,since-cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
 
 namespace std {
   __extension__ typedef __SIZE_TYPE__ size_t;

clang/test/CXX/drs/cwg118.cpp

@@ -1,7 +1,11 @@
 // RUN: %clang_cc1 -triple x86_64-linux -std=c++98 %s -pedantic-errors -emit-llvm -o - | FileCheck %s --implicit-check-not " call "
 // RUN: %clang_cc1 -triple x86_64-linux -std=c++11 %s -pedantic-errors -emit-llvm -o - | FileCheck %s --implicit-check-not " call "
 // RUN: %clang_cc1 -triple x86_64-linux -std=c++14 %s -pedantic-errors -emit-llvm -o - | FileCheck %s --implicit-check-not " call "
-// RUN: %clang_cc1 -triple x86_64-linux -std=c++1z %s -pedantic-errors -emit-llvm -o - | FileCheck %s --implicit-check-not " call "
+// RUN: %clang_cc1 -triple x86_64-linux -std=c++17 %s -pedantic-errors -emit-llvm -o - | FileCheck %s --implicit-check-not " call "
+// RUN: %clang_cc1 -triple x86_64-linux -std=c++20 %s -pedantic-errors -emit-llvm -o - | FileCheck %s --implicit-check-not " call "
+// RUN: %clang_cc1 -triple x86_64-linux -std=c++23 %s -pedantic-errors -emit-llvm -o - | FileCheck %s --implicit-check-not " call "
+// RUN: %clang_cc1 -triple x86_64-linux -std=c++2c %s -pedantic-errors -emit-llvm -o - | FileCheck %s --implicit-check-not " call "
+
 
 // cwg118: yes
 

clang/test/CXX/drs/cwg11xx.cpp

@@ -2,7 +2,9 @@
 // RUN: %clang_cc1 -std=c++11 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++14 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++17 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors
-// RUN: %clang_cc1 -std=c++2a %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++20 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++23 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++2c %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors
 
 namespace cwg1110 { // cwg1110: 3.1
 #if __cplusplus >= 201103L

clang/test/CXX/drs/cwg12xx.cpp

@@ -4,6 +4,7 @@
 // RUN: %clang_cc1 -std=c++17 %s -verify=expected,since-cxx17,since-cxx14,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++20 %s -verify=expected,since-cxx17,since-cxx14,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++23 %s -verify=expected,since-cxx17,since-cxx14,since-cxx11,since-cxx23 -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++2c %s -verify=expected,since-cxx17,since-cxx14,since-cxx11,since-cxx23 -fexceptions -fcxx-exceptions -pedantic-errors
 
 // cwg1200: na
 

clang/test/CXX/drs/cwg158.cpp

@@ -1,7 +1,10 @@
 // RUN: %clang_cc1 -triple x86_64-linux -std=c++98 %s -O3 -disable-llvm-passes -pedantic-errors -emit-llvm -o - | FileCheck --check-prefixes=CHECK %s
 // RUN: %clang_cc1 -triple x86_64-linux -std=c++11 %s -O3 -disable-llvm-passes -pedantic-errors -emit-llvm -o - | FileCheck --check-prefixes=CHECK %s
 // RUN: %clang_cc1 -triple x86_64-linux -std=c++14 %s -O3 -disable-llvm-passes -pedantic-errors -emit-llvm -o - | FileCheck --check-prefixes=CHECK %s
-// RUN: %clang_cc1 -triple x86_64-linux -std=c++1z %s -O3 -disable-llvm-passes -pedantic-errors -emit-llvm -o - | FileCheck --check-prefixes=CHECK %s
+// RUN: %clang_cc1 -triple x86_64-linux -std=c++17 %s -O3 -disable-llvm-passes -pedantic-errors -emit-llvm -o - | FileCheck --check-prefixes=CHECK %s
+// RUN: %clang_cc1 -triple x86_64-linux -std=c++20 %s -O3 -disable-llvm-passes -pedantic-errors -emit-llvm -o - | FileCheck --check-prefixes=CHECK %s
+// RUN: %clang_cc1 -triple x86_64-linux -std=c++23 %s -O3 -disable-llvm-passes -pedantic-errors -emit-llvm -o - | FileCheck --check-prefixes=CHECK %s
+// RUN: %clang_cc1 -triple x86_64-linux -std=c++2c %s -O3 -disable-llvm-passes -pedantic-errors -emit-llvm -o - | FileCheck --check-prefixes=CHECK %s
 // RUN: %clang_cc1 -triple x86_64-linux -std=c++1z %s -O3 -pointer-tbaa -disable-llvm-passes -pedantic-errors -emit-llvm -o - | FileCheck --check-prefixes=CHECK,POINTER-TBAA %s
 
 // cwg158: yes

clang/test/CXX/drs/cwg1748.cpp

@@ -1,7 +1,10 @@
 // RUN: %clang_cc1 -std=c++98 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
 // RUN: %clang_cc1 -std=c++11 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
 // RUN: %clang_cc1 -std=c++14 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
-// RUN: %clang_cc1 -std=c++1z %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
+// RUN: %clang_cc1 -std=c++17 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
+// RUN: %clang_cc1 -std=c++20 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
+// RUN: %clang_cc1 -std=c++23 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
+// RUN: %clang_cc1 -std=c++2c %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
 
 // cwg1748: 3.7
 

clang/test/CXX/drs/cwg177x.cpp

@@ -1,7 +1,10 @@
 // RUN: %clang_cc1 -std=c++98 %s -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s
 // RUN: %clang_cc1 -std=c++11 %s -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s --check-prefixes=CHECK,CXX11
 // RUN: %clang_cc1 -std=c++14 %s -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s --check-prefixes=CHECK,CXX11,CXX14
-// RUN: %clang_cc1 -std=c++1z %s -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s --check-prefixes=CHECK,CXX11,CXX14
+// RUN: %clang_cc1 -std=c++17 %s -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s --check-prefixes=CHECK,CXX11,CXX14
+// RUN: %clang_cc1 -std=c++20 %s -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s --check-prefixes=CHECK,CXX11,CXX14
+// RUN: %clang_cc1 -std=c++23 %s -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s --check-prefixes=CHECK,CXX11,CXX14
+// RUN: %clang_cc1 -std=c++2c %s -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s --check-prefixes=CHECK,CXX11,CXX14
 // RUN: %clang_cc1 -std=c++1z %s -fexceptions -fcxx-exceptions -pedantic-errors -triple i386-windows-pc -ast-dump | FileCheck %s --check-prefixes=CHECK,CXX11,CXX14
 
 namespace cwg1772 { // cwg1772: 14

clang/test/CXX/drs/cwg1xx.cpp

@@ -4,6 +4,7 @@
 // RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-unknown %s -verify=expected,since-cxx11,since-cxx17,cxx98-17 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-unknown %s -verify=expected,since-cxx11,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++23 -triple x86_64-unknown-unknown %s -verify=expected,since-cxx11,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++2c -triple x86_64-unknown-unknown %s -verify=expected,since-cxx11,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors
 
 #if __cplusplus == 199711L
 #define static_assert(...) __extension__ _Static_assert(__VA_ARGS__)

clang/test/CXX/drs/cwg2771.cpp

@@ -1,4 +1,10 @@
-// RUN: %clang_cc1 -std=c++23 %s -ast-dump | FileCheck --check-prefixes=CXX23 %s
+// RUN: %clang_cc1 -std=c++98 %s -ast-dump | FileCheck %s
+// RUN: %clang_cc1 -std=c++11 %s -ast-dump | FileCheck %s
+// RUN: %clang_cc1 -std=c++14 %s -ast-dump | FileCheck %s
+// RUN: %clang_cc1 -std=c++17 %s -ast-dump | FileCheck %s
+// RUN: %clang_cc1 -std=c++20 %s -ast-dump | FileCheck %s
+// RUN: %clang_cc1 -std=c++23 %s -ast-dump | FileCheck %s
+// RUN: %clang_cc1 -std=c++2c %s -ast-dump | FileCheck %s
 
 namespace cwg2771 { // cwg2771: 18
 
@@ -8,12 +14,12 @@ struct A{
       int* r = &a;
     }
 };
-// CXX23: CXXMethodDecl{{.+}}cwg2771
-// CXX23-NEXT: CompoundStmt
-// CXX23-NEXT: DeclStmt
-// CXX23-NEXT: VarDecl
-// CXX23-NEXT: UnaryOperator
-// CXX23-NEXT: MemberExpr
-// CXX23-NEXT: CXXThisExpr{{.+}}'cwg2771::A *'
+// CHECK: CXXMethodDecl{{.+}}cwg2771
+// CHECK-NEXT: CompoundStmt
+// CHECK-NEXT: DeclStmt
+// CHECK-NEXT: VarDecl
+// CHECK-NEXT: UnaryOperator
+// CHECK-NEXT: MemberExpr
+// CHECK-NEXT: CXXThisExpr{{.+}}'cwg2771::A *'
 
 } // namespace cwg2771

clang/test/CXX/drs/cwg2xx.cpp

@@ -4,6 +4,7 @@
 // RUN: %clang_cc1 -std=c++17 %s -verify=expected,since-cxx11,since-cxx14,since-cxx17,cxx98-17 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++20 %s -verify=expected,since-cxx11,since-cxx14,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++23 %s -verify=expected,since-cxx11,since-cxx14,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++2c %s -verify=expected,since-cxx11,since-cxx14,since-cxx17 -fexceptions -fcxx-exceptions -pedantic-errors
 
 // FIXME: diagnostic above is emitted only on Windows platforms
 // PR13819 -- __SIZE_TYPE__ is incompatible.

clang/test/CXX/drs/cwg3xx.cpp

@@ -1,9 +1,10 @@
-// RUN: %clang_cc1 -std=c++23 -verify=expected,cxx20-23,cxx23,since-cxx11,since-cxx17,since-cxx23 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
-// RUN: %clang_cc1 -std=c++20 -verify=expected,cxx98-20,cxx20-23,since-cxx11,since-cxx17 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
-// RUN: %clang_cc1 -std=c++17 -verify=expected,cxx98-17,cxx98-20,since-cxx11,since-cxx17 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
-// RUN: %clang_cc1 -std=c++14 -verify=expected,cxx98-14,cxx98-17,cxx98-20,cxx11-14,since-cxx11 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
-// RUN: %clang_cc1 -std=c++11 -verify=expected,cxx98-14,cxx98-17,cxx98-20,cxx11-14,since-cxx11 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++98 -verify=expected,cxx98-14,cxx98-17,cxx98-20,cxx98 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++11 -verify=expected,cxx98-14,cxx98-17,cxx98-20,cxx11-14,since-cxx11 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++14 -verify=expected,cxx98-14,cxx98-17,cxx98-20,cxx11-14,since-cxx11 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++17 -verify=expected,cxx98-17,cxx98-20,since-cxx11,since-cxx17 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++20 -verify=expected,cxx98-20,cxx20-23,since-cxx11,since-cxx17 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++23 -verify=expected,cxx20-23,cxx23,since-cxx11,since-cxx17,since-cxx23 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++2c -verify=expected,cxx20-23,cxx23,since-cxx11,since-cxx17,since-cxx23 -triple %itanium_abi_triple %s -fexceptions -fcxx-exceptions -pedantic-errors
 
 #if __cplusplus == 199711L
 #define static_assert(...) __extension__ _Static_assert(__VA_ARGS__)

clang/test/CXX/drs/cwg6xx.cpp

@@ -4,6 +4,7 @@
 // RUN: %clang_cc1 -std=c++17 %s -verify=expected,cxx11-20,cxx98-17,cxx11-17,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors -fno-spell-checking
 // RUN: %clang_cc1 -std=c++20 %s -verify=expected,cxx11-20,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors -fno-spell-checking
 // RUN: %clang_cc1 -std=c++23 %s -verify=expected,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors -fno-spell-checking
+// RUN: %clang_cc1 -std=c++2c %s -verify=expected,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors -fno-spell-checking
 
 #if __cplusplus == 199711L
 #define static_assert(...) __extension__ _Static_assert(__VA_ARGS__)

clang/test/CXX/drs/cwg7xx.cpp

@@ -2,7 +2,9 @@
 // RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++11 %s -verify=expected,cxx98-14,cxx98-11,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++14 %s -verify=expected,cxx98-14,since-cxx14,since-cxx11,cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++17 %s -verify=expected,since-cxx14,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
-// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++2a %s -verify=expected,since-cxx14,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++20 %s -verify=expected,since-cxx14,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++23 %s -verify=expected,since-cxx14,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++2c %s -verify=expected,since-cxx14,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
 
 #if __cplusplus == 199711L
 #define static_assert(...) __extension__ _Static_assert(__VA_ARGS__)

clang/test/CXX/drs/cwg9xx.cpp

@@ -4,6 +4,7 @@
 // RUN: %clang_cc1 -std=c++17 %s -verify=expected,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++20 %s -verify=expected,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++23 %s -verify=expected,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++2c %s -verify=expected,since-cxx11 -fexceptions -fcxx-exceptions -pedantic-errors
 
 namespace std {
   __extension__ typedef __SIZE_TYPE__ size_t;