Re: [Tinycc-devel] Seg fault with test 114 on Debian x64

[Christian Jullien]

Your fix passes on Debian x64, arm, aarch64 and Windows with different compilers.

Hope it will pass all the time.

 

Thank you very much.

 

Christian

 

From: Herman ten Brugge [mailto:hermantenbrugge@home.nl]
Sent: Tuesday, November 10, 2020 10:33
To: jullien@eligis.com; tinycc-devel@nongnu.org
Subject: Re: [Tinycc-devel] Seg fault with test 114 on Debian x64

 

I pushed a patch for test 114.

On old libc there seems to be a race condition with stdio and fork().

I could reproduce the problem (after about 1000 runs) on i686 with old fedora release.

I can not reproduce the problem on my current x86_64 machine with latest fedora.

Herman

On 11/10/20 7:21 AM, Christian Jullien wrote:

Hi Herman,

 

I quickly replaced __APPLE__ by __clang__ in 114 test but, as this test is not reproducible, I can’t say it is the right fix to apply.

I ran changes locally on Debian x86_64 and RPi Debian 32 which passed 114 test.

 

Is it annoyed to have do_fork thread always executed?

 

From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=orange.fr@nongnu.org] On Behalf Of Christian Jullien
Sent: Monday, November 09, 2020 21:24
To: jullien@eligis.com; tinycc-devel@nongnu.org
Cc: 'Herman ten Brugge'
Subject: [Tinycc-devel] Seg fault with test 114 on Debian x64

 

Hi again Herman,

I continue to test mod with your latest patch on the (many) machines I have.

This time, it is a Debian 10.6 x86_64 fully up to date and, guess what?, it fails on test  114 with clang 7.0, (gcc worked).

See log below:

 

jullien@debian64:~$ uname -a

Linux debian64 4.19.0-12-amd64 #1 SMP Debian 4.19.152-1 (2020-10-18) x86_64 GNU/Linux

jullien@debian64:~$ clang -v

clang version 7.0.1-8+deb10u2 (tags/RELEASE_701/final)

Target: x86_64-pc-linux-gnu

Thread model: posix

InstalledDir: /usr/bin

Found candidate GCC installation: /usr/bin/../lib/gcc/i686-linux-gnu/6

Found candidate GCC installation: /usr/bin/../lib/gcc/i686-linux-gnu/6.3.0

Found candidate GCC installation: /usr/bin/../lib/gcc/i686-linux-gnu/8

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/6

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/6.3.0

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8

Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6

Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6.3.0

Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.3.0

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8

Selected GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8

Candidate multilib: .;@m64

Candidate multilib: 32;@m32

Candidate multilib: x32;@mx32

Selected multilib: .;@m64

 

=== Bootstrapping with clang static

Binary directory    /usr/local/bin

TinyCC directory    /usr/local/lib/tcc

Library directory   /usr/local/lib

Include directory   /usr/local/include

Manual directory    /usr/local/share/man

Info directory      /usr/local/share/info

Doc directory       /usr/local/share/doc

Source path         /home/jullien/tinycc

C compiler          clang (7.0)

Target OS           Linux

CPU                 x86_64

Triplet             x86_64-linux-gnu

Config              strip

 

 

Test: 114_bound_signal...

--- 114_bound_signal.expect     2020-11-09 21:10:32.444251010 +0100

+++ 114_bound_signal.output     2020-11-09 21:11:34.000089207 +0100

@@ -1,2 +1,3 @@

start

end

+end

make[3]: *** [Makefile:117: 114_bound_signal.test] Error 1

Test: 115_bound_setjmp...