[clang] df43ec3 - [Driver] Add test for -stdlib++-isystem with -nostdinc

[Shoaib Meenai via cfe-commits]

Author: Shoaib Meenai
Date: 2022-11-30T23:09:28-08:00
New Revision: df43ec30ab66f5af7bbf87e121e0fe26aad478b4

URL: https://github.com/llvm/llvm-project/commit/df43ec30ab66f5af7bbf87e121e0fe26aad478b4
DIFF: https://github.com/llvm/llvm-project/commit/df43ec30ab66f5af7bbf87e121e0fe26aad478b4.diff

LOG: [Driver] Add test for -stdlib++-isystem with -nostdinc

This further clarifies the intent of the flag.

Added: 
    

Modified: 
    clang/test/Driver/stdlibxx-isystem.cpp

Removed: 
    


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diff  --git a/clang/test/Driver/stdlibxx-isystem.cpp b/clang/test/Driver/stdlibxx-isystem.cpp
index 827cdf9a7c71..d4888984fdf1 100644
--- a/clang/test/Driver/stdlibxx-isystem.cpp
+++ b/clang/test/Driver/stdlibxx-isystem.cpp
@@ -51,3 +51,13 @@
 // RUN:   -stdlib++-isystem /tmp/foo -stdlib++-isystem /tmp/bar -nostdinc++ \
 // RUN:   -fsyntax-only %s -### 2>&1 | FileCheck -check-prefix=NOSTDINCXX %s
 // NOSTDINCXX-NOT: "-internal-isystem" "/tmp/foo" "-internal-isystem" "/tmp/bar"
+
+// It should take effect even if -nostdinc or -nostdlibinc are specified; only
+// -nostdinc++ should suppress it.
+// RUN: %clang -target aarch64-linux-gnu -ccc-install-dir %t/bin \
+// RUN:   -stdlib++-isystem /tmp/foo -stdlib++-isystem /tmp/bar -nostdinc \
+// RUN:   -fsyntax-only %s -### 2>&1 | FileCheck -check-prefix=NOSTDINC %s
+// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %t/bin \
+// RUN:   -stdlib++-isystem /tmp/foo -stdlib++-isystem /tmp/bar -nostdlibinc \
+// RUN:   -fsyntax-only %s -### 2>&1 | FileCheck -check-prefix=NOSTDINC %s
+// NOSTDINC: "-internal-isystem" "/tmp/foo" "-internal-isystem" "/tmp/bar"