[PATCH] D119144: [tests][Driver] Pass an empty sysroot for `DEFAULT_SYSROOT` builds

[Carlo Cabrera via Phabricator via cfe-commits]

carlocab created this revision.
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carlocab added a project: clang.
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The `baremetal-sysroot` test fails when the toolchain is configured with
`DEFAULT_SYSROOT`. So, to emulate not having passed one at all, let's
pass an empty sysroot instead.

This simply follows D79694 <https://reviews.llvm.org/D79694>, D66834 <https://reviews.llvm.org/D66834>, and D51972 <https://reviews.llvm.org/D51972>. D51972 <https://reviews.llvm.org/D51972> in particular was
meant to address a failing test for behaviour when `--sysroot` is not
passed and `DEFAULT_SYSROOT` is set.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D119144

Files:
  clang/test/Driver/baremetal-sysroot.cpp


Index: clang/test/Driver/baremetal-sysroot.cpp
===================================================================
--- clang/test/Driver/baremetal-sysroot.cpp
+++ clang/test/Driver/baremetal-sysroot.cpp
@@ -10,7 +10,7 @@
 // RUN: ln -s %clang %T/baremetal_default_sysroot/bin/clang
 
 // RUN: %T/baremetal_default_sysroot/bin/clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
-// RUN:     -target armv6m-none-eabi \
+// RUN:     -target armv6m-none-eabi --sysroot= \
 // RUN:   | FileCheck --check-prefix=CHECK-V6M-C %s
 // CHECK-V6M-C: "{{.*}}clang{{.*}}" "-cc1" "-triple" "thumbv6m-none-unknown-eabi"
 // CHECK-V6M-C-SAME: "-internal-isystem" "{{.*}}/baremetal_default_sysroot{{[/\\]+}}bin{{[/\\]+}}..{{[/\\]+}}lib{{[/\\]+}}clang-runtimes{{[/\\]+}}armv6m-none-eabi{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}v1"


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