RFR: 8352481: Extra a.out generated after configure with clang [v5]

[Magnus Ihse Bursie]

On Tue, 25 Mar 2025 04:10:53 GMT, SendaoYan <syan at openjdk.org> wrote:

>> Hi all,
>> 
>> There is an extra a.out file generated located in repository root directory after execute the configure command with llvm/clang compiler sometimes, not always. The a.out was generate by `$LINKER -Wl,-v 2>&1 | $HEAD -n 1`, shows as below. This PR  add a command to remove the extra a.out file. No risk.
>> 
>> 
>>> rm -rf a.out ; date ; ~/software/acc/x86_64/bin/clang -Wl,-v 2>&1 | head -n 1 ; stat a.out ; ls -lh a.out ; file a.out
>> Thu Mar 20 02:46:13 PM CST 2025
>> GNU ld (GNU Binutils) 2.43.50.20240909
>>   File: a.out
>>   Size: 792 Blocks: 8 IO Block: 4096 regular file
>> Device: 10303h/66307d Inode: 2355308 Links: 1
>> Access: (0640/-rw-r-----) Uid: ( 995/yansendao) Gid: ( 992/yansendao)
>> Access: 2025-03-20 14:46:13.682967228 +0800
>> Modify: 2025-03-20 14:46:13.682967228 +0800
>> Change: 2025-03-20 14:46:13.682967228 +0800
>>  Birth: 2025-03-20 14:46:13.674966977 +0800
>> -rw-r----- 1 yansendao yansendao 792 Mar 20 14:46 a.out
>> a.out: data
>
> SendaoYan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Redirecte stderr to /dev/null

Say what? Redirecting stderr to /dev/null does not trigger a.out generation, but redirecting it to stdout does? 

That is somehow even weirder.

I don't like this. You are just trying to put band aid on, instead of addressing the core issue.

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PR Comment: https://git.openjdk.org/jdk/pull/24125#issuecomment-2750951036