[test][Driver] Fix Clang :: Driver/cl-response-file.c

Clang :: Driver/cl-response-file.c currently FAILs on Solaris:

  Command Output (stderr):
  --
  /vol/llvm/src/clang/dist/test/Driver/cl-response-file.c:10:11: error: CHECK: expected string not found in input
  // CHECK: "-I" "{{.*}}\\Inputs\\cl-response-file\\" "-D" "FOO=2"
            ^

Looking at the generated response file reveals that this is no surprise:

  /I/vol/llvm/src/clang/dist/test/Driver\Inputs

with no newline at the end.  The echo command used to create it boils down to

  echo 'a\cb'

However, one cannot expect \c to be emitted literally: e.g. bash's builtin
echo has

  \c        suppress further output

I've tried various combinations of builtin echo, /usr/bin/echo, GNU echo if
different, the same for printf, and the backslash unescaped and quoted
(a\cb and a\\cb).  The only combination that worked reliably on Solaris,
Linux, and macOS was

  printf 'a\\cb'

so this is what this patch uses.  Tested on amd64-pc-solaris2.11 and
x86_64-pc-linux-gnu.

Differential Revision: https://reviews.llvm.org/D63600

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@363985 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Driver/cl-response-file.c b/test/Driver/cl-response-file.c
index 51ee00bff4ed18c26842c0848dfd653e3fc89bf9..9186c43050d6e720c3cc2ce4ae17664ed18508ce 100644 (file)
--- a/test/Driver/cl-response-file.c
+++ b/test/Driver/cl-response-file.c
@@ -4,7 +4,7 @@
 
 
 
-// RUN: echo '/I%S\Inputs\cl-response-file\ /DFOO=2' > %t.rsp
+// RUN: printf '/I%S\Inputs\\cl-response-file\ /DFOO=2' > %t.rsp
 // RUN: %clang_cl /c -### @%t.rsp -- %s 2>&1 | FileCheck %s
 
 // CHECK: "-I" "{{.*}}\\Inputs\\cl-response-file\\" "-D" "FOO=2"