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Subject: Re: 3.15 build rules suppress crash message [was: EPICS make problem]
From: Ralph Lange <ralph.lange@gmx.de>
To: EPICS Tech Talk <tech-talk@aps.anl.gov>
Date: Wed, 8 Mar 2017 12:01:49 +0100
Hi Ben,

On Wed, Mar 8, 2017 at 11:33 AM, Ben Franksen <benjamin.franksen@helmholtz-berlin.de> wrote:

The problem (and mystery!) is the absence of any message in the make
output under 3.15 that would indicate that snc crashed; whereas under
3.14 I do see such a message in the make output. I can reproduce this
behavior reliably, regardless of the -j and -s make switches. My
conclusion is that something was changed in the build system between
3.14 and 3.15 that causes the crash message ("segmentation fault (core
dumped)") to be suppressed, probably as an unintended side-effect.

Have you verified the return code of the segfaulting command? I think make uses that to determine if the command failed. IIRC, we had cases in Base where a failing script would not return 0 because of an output redirection. Something in that area?

Just guessing...
~Ralph


Replies:
Re: 3.15 build rules suppress crash message [was: EPICS make problem] J. Lewis Muir
Re: 3.15 build rules suppress crash message [was: EPICS make problem] Ben Franksen
References:
EPICS make problem Benjamin Franksen
Re: EPICS make problem Torsten Bögershausen
3.15 build rules suppress crash message [was: EPICS make problem] Ben Franksen

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