[clang] [Driver][test] Use -### for non-ObjC constant-literal RUN lines (PR #201877)

[Akira Hatanaka via cfe-commits]

https://github.com/ahatanak created https://github.com/llvm/llvm-project/pull/201877

The RUN lines added in 3b100666a70f did a real compile for arm64-apple-macosx11, which fails on builders that don't register the AArch64 backend (e.g. llvm-clang-x86_64-sie-ubuntu-fast). The NoArgumentUnused behavior under test is driver-side, so switch to -### and avoid the backend dependency.

>From 472dd942bd912646f0cd16573946f2207ca0d8d5 Mon Sep 17 00:00:00 2001
From: Akira Hatanaka <ahatanak at gmail.com>
Date: Fri, 5 Jun 2026 09:08:25 -0700
Subject: [PATCH] [Driver][test] Use -### for non-ObjC constant-literal RUN
 lines

The RUN lines added in 3b100666a70f did a real compile for
arm64-apple-macosx11, which fails on builders that don't register the
AArch64 backend (e.g. llvm-clang-x86_64-sie-ubuntu-fast). The
NoArgumentUnused behavior under test is driver-side, so switch to -###
and avoid the backend dependency.
---
 clang/test/Driver/objc-constant-literals.m | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/clang/test/Driver/objc-constant-literals.m b/clang/test/Driver/objc-constant-literals.m
index aec39918d5feb..e926a67d45dc8 100644
--- a/clang/test/Driver/objc-constant-literals.m
+++ b/clang/test/Driver/objc-constant-literals.m
@@ -24,15 +24,15 @@
 // pass them uniformly to non-ObjC inputs (e.g. assembly files via a shared
 // response file); they carry NoArgumentUnused so they don't trigger
 // -Wunused-command-line-argument under -Werror.
-// RUN: %clang -target arm64-apple-macosx11 -Werror \
+// RUN: %clang -### -target arm64-apple-macosx11 -Werror \
 // RUN:   -fobjc-constant-literals -fconstant-nsnumber-literals \
 // RUN:   -fconstant-nsarray-literals -fconstant-nsdictionary-literals \
-// RUN:   -x assembler -c %s -o /dev/null 2>&1 \
+// RUN:   -x assembler -c %s 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=IGNORED --allow-empty
-// RUN: %clang -target arm64-apple-macosx11 -Werror \
+// RUN: %clang -### -target arm64-apple-macosx11 -Werror \
 // RUN:   -fno-objc-constant-literals -fno-constant-nsnumber-literals \
 // RUN:   -fno-constant-nsarray-literals -fno-constant-nsdictionary-literals \
-// RUN:   -x assembler -c %s -o /dev/null 2>&1 \
+// RUN:   -x assembler -c %s 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=IGNORED --allow-empty
 
 // IGNORED-NOT: argument unused during compilation
@@ -43,8 +43,8 @@
 
 // The same flags must also be ignored (and not forwarded to cc1) when compiling
 // non-ObjC C/C++ inputs.
-// RUN: %clang -target arm64-apple-macosx11 -Werror \
+// RUN: %clang -### -target arm64-apple-macosx11 -Werror \
 // RUN:   -fobjc-constant-literals -fconstant-nsnumber-literals \
 // RUN:   -fconstant-nsarray-literals -fconstant-nsdictionary-literals \
-// RUN:   -x c++ -c %s -o /dev/null 2>&1 \
+// RUN:   -x c++ -c %s 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=IGNORED --allow-empty