r341697 - warn_stdlibcxx_not_found: suggest '-stdlib=libc++' instead of '-std'

[Richard Smith via cfe-commits]

Good idea, this LG for a patch release.

On Sat, 17 Nov 2018, 18:48 Shoaib Meenai via cfe-commits <
cfe-commits at lists.llvm.org wrote:

> Could we merge this into 7.0.1? It's a trivial typo fix, and the error
> message could otherwise be confusing to users (someone brought this up in
> IRC a few hours ago).
>
>
>
> *From: *cfe-commits <cfe-commits-bounces at lists.llvm.org> on behalf of
> Alex Lorenz via cfe-commits <cfe-commits at lists.llvm.org>
> *Reply-To: *Alex Lorenz <arphaman at gmail.com>
> *Date: *Friday, September 7, 2018 at 12:01 PM
> *To: *"cfe-commits at lists.llvm.org" <cfe-commits at lists.llvm.org>
> *Subject: *r341697 - warn_stdlibcxx_not_found: suggest '-stdlib=libc++'
> instead of '-std'
>
>
>
> Author: arphaman
>
> Date: Fri Sep  7 11:59:45 2018
>
> New Revision: 341697
>
>
>
> URL:
> https://urldefense.proofpoint.com/v2/url?u=http-3A__llvm.org_viewvc_llvm-2Dproject-3Frev-3D341697-26view-3Drev&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=IqJdIRn5MxFdIr2LEpZYhRLQTay50tZijNg6klhhdRA&s=MYePhuYEkBYd5aK7fqamBrBRJJGtvC-BPPojLInHah8&e=
>
> Log:
>
> warn_stdlibcxx_not_found: suggest '-stdlib=libc++' instead of '-std'
>
>
>
> Addresses first post-commit feedback for r335081 from Nico
>
>
>
> Modified:
>
>     cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td
>
>     cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp
>
>
>
> Modified: cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td
>
> URL:
> https://urldefense.proofpoint.com/v2/url?u=http-3A__llvm.org_viewvc_llvm-2Dproject_cfe_trunk_include_clang_Basic_DiagnosticFrontendKinds.td-3Frev-3D341697-26r1-3D341696-26r2-3D341697-26view-3Ddiff&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=IqJdIRn5MxFdIr2LEpZYhRLQTay50tZijNg6klhhdRA&s=ZQcIenU2yQH3SmDrAhdXm2VKI10aP3_5IoBH-72HxYA&e=
>
>
> ==============================================================================
>
> --- cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td (original)
>
> +++ cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td Fri Sep  7
> 11:59:45 2018
>
> @@ -238,7 +238,7 @@ def warn_option_invalid_ocl_version : Wa
>
>    "OpenCL version %0 does not support the option '%1'">,
> InGroup<Deprecated>;
>
> def warn_stdlibcxx_not_found : Warning<
>
> -  "include path for stdlibc++ headers not found; pass '-std=libc++' on
> the "
>
> +  "include path for stdlibc++ headers not found; pass '-stdlib=libc++' on
> the "
>
>    "command line to use the libc++ standard library instead">,
>
>    InGroup<DiagGroup<"stdlibcxx-not-found">>;
>
> }
>
>
>
> Modified: cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp
>
> URL:
> https://urldefense.proofpoint.com/v2/url?u=http-3A__llvm.org_viewvc_llvm-2Dproject_cfe_trunk_test_Frontend_warning-2Dstdlibcxx-2Ddarwin.cpp-3Frev-3D341697-26r1-3D341696-26r2-3D341697-26view-3Ddiff&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=IqJdIRn5MxFdIr2LEpZYhRLQTay50tZijNg6klhhdRA&s=YR_ENMKZ9M1ESvYMVXN6PlRtSZ8bXMsfvYf8QaBm5X4&e=
>
>
> ==============================================================================
>
> --- cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp (original)
>
> +++ cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp Fri Sep  7
> 11:59:45 2018
>
> @@ -1,5 +1,5 @@
>
> // RUN: %clang -cc1 -triple arm64-apple-ios6.0.0 -isysroot %S/doesnotexist
> %s 2>&1 | FileCheck %s
>
> // RUN: %clang -cc1 -triple arm64-apple-ios6.0.0 -isysroot %S/doesnotexist
> -stdlib=libc++ %s -verify
>
> -// CHECK: include path for stdlibc++ headers not found; pass
> '-std=libc++' on the command line to use the libc++ standard library instead
>
> +// CHECK: include path for stdlibc++ headers not found; pass
> '-stdlib=libc++' on the command line to use the libc++ standard library
> instead
>
> // expected-no-diagnostics
>
>
>
>
>
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