[cfe-dev] Regression in Release Candidate 2

Wed Aug 24 13:33:39 PDT 2016

I've tried to reproduce this, but can't see any difference between
completeAt in 3.7.1 and 3.9-rc2:

$ wget http://llvm.org/releases/3.7.1/clang+llvm-3.7.1-x86_64-linux-gnu-ubuntu-14.04.tar.xz
$ tar Jxf clang+llvm-3.7.1-x86_64-linux-gnu-ubuntu-14.04.tar.xz
$ g++ libclang_test.cc -I
clang+llvm-3.7.1-x86_64-linux-gnu-ubuntu-14.04/include -L
clang+llvm-3.7.1-x86_64-linux-gnu-ubuntu-14.04/lib -lclang
$ LD_LIBRARY_PATH=$LD_LIBRARY_PATH:clang+llvm-3.7.1-x86_64-linux-gnu-ubuntu-14.04/lib
./a.out | head
string: 0 chunk: 0 kind: 15 text: char *
string: 0 chunk: 1 kind: 1 text: stpcpy
string: 0 chunk: 2 kind: 6 text: (
string: 0 chunk: 3 kind: 3 text: char *__restrict __dest
string: 0 chunk: 4 kind: 14 text: ,
string: 0 chunk: 5 kind: 3 text: const char *__restrict __src
string: 0 chunk: 6 kind: 7 text: )
string: 1 chunk: 0 kind: 15 text: void *
string: 1 chunk: 1 kind: 1 text: rawmemchr
string: 1 chunk: 2 kind: 6 text: (

$ wget http://llvm.org/pre-releases/3.9.0/rc2/clang+llvm-3.9.0-rc2-x86_64-linux-gnu-debian8.tar.xz
$ tar Jxf clang+llvm-3.9.0-rc2-x86_64-linux-gnu-debian8.tar.xz
$ g++ libclang_test.cc -I
clang+llvm-3.9.0-rc2-x86_64-linux-gnu-debian8/include -L
clang+llvm-3.9.0-rc2-x86_64-linux-gnu-debian8/lib -lclang
$ LD_LIBRARY_PATH=$LD_LIBRARY_PATH:clang+llvm-3.9.0-rc2-x86_64-linux-gnu-debian8/lib
./a.out | head
string: 0 chunk: 0 kind: 15 text: char *
string: 0 chunk: 1 kind: 1 text: strncat
string: 0 chunk: 2 kind: 6 text: (
string: 0 chunk: 3 kind: 3 text: char *__restrict __dest
string: 0 chunk: 4 kind: 14 text: ,
string: 0 chunk: 5 kind: 3 text: const char *__restrict __src
string: 0 chunk: 6 kind: 14 text: ,
string: 0 chunk: 7 kind: 3 text: int __n
string: 0 chunk: 8 kind: 7 text: )
string: 1 chunk: 0 kind: 15 text: void *

Could it be that the newer clang for some reason grabs the string.h
header from a different location than the old one? "clang -v" should
print where it searches for headers.

char* functionname( void)

looks like a very strange prototype for memset though.

 - Hans

On Wed, Aug 24, 2016 at 3:56 AM, Dan Walmsley <dan at walms.co.uk> wrote:
>
> Hi,
>
> I noticed a regression in this build...
>
> libclang, code completeAt...
> the results returned inbuilt libraries, i.e. memset
>
> all come back as char* functionname( void)
>
> if I go back to older build (3.7.1) then this information returns.
>
> Any ideas?
>
> Dan
>
>> Date: Mon, 22 Aug 2016 16:15:12 -0700
>> To: renato.golin at linaro.org
>> CC: llvm-dev at lists.llvm.org; release-testers at lists.llvm.org;
>> cfe-dev at lists.llvm.org; openmp-dev at lists.llvm.org; lldb-dev at lists.llvm.org
>> Subject: Re: [cfe-dev] [Release-testers] [3.9 Release] Release Candidate 2
>> source and binaries available
>> From: cfe-dev at lists.llvm.org
>>
>> I replied on the "has been tagged" thread; I couldn't find the binary
>> on the sftp. Maybe you uploaded the wrong version, or in some other
>> folder?
>>
>> On Mon, Aug 22, 2016 at 4:01 PM, Renato Golin <renato.golin at linaro.org>
>> wrote:
>> > Hi Hans,
>> >
>> > I did upload the aarch64 binary, didn't you find it? Maybe I uploaded
>> > the
>> > wrong one?
>> >
>> > Cheers,
>> > Renato
>> >
>> >
>> > On 22 Aug 2016 7:55 p.m., "Hans Wennborg via Release-testers"
>> > <release-testers at lists.llvm.org> wrote:
>> >>
>> >> We're getting close to the final release. I know the schedule on the
>> >> web page says 'final' should be tagged today, but I still think it
>> >> should be possible to get there this week.
>> >>
>> >> Source and binaries for LLVM-3.9.0-rc2 are now available at
>> >> http://llvm.org/pre-releases/3.9.0/#rc2
>> >>
>> >> Please try it out and let me know if you find any issues.
>> >>
>> >> As we're running out of time, RC2 will be a short test cycle, so if
>> >> you're planning on testing it, please don't procrastinate it :-)
>> >>
>> >> Thanks,
>> >> Hans
>> >> _______________________________________________
>> >> Release-testers mailing list
>> >> Release-testers at lists.llvm.org
>> >> http://lists.llvm.org/cgi-bin/mailman/listinfo/release-testers
>> _______________________________________________
>> cfe-dev mailing list
>> cfe-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
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