Re: [naviserver-devel] Signal 11 crashes

[Zoran V. <zv...@ar...>]

On Tue, 15 Dec 2020 12:18:57 +0000
David Osborne <da...@qc...> wrote:

> So I have *removed* DSYSTEM_MALLOC from the default build flags and created
> a new build... so far I've not been able to get that to crash in test
> (where-as it was crashing every 3-4 requests when built with
> DSYSTEM_MALLOC)

If it does not crash with system malloc, the problem 
is just "masked-away" and may (or may not) re-appear
at some other place/time.

The only right way is to locate the culprit. 
But this can be a daunting task... 

If you want to debug it, the best way is to use
the regular system malloc, turn-on any/all possible
debug features of it (or of the compiler) and have 
a debugger attached to the process all the time, until
it breaks. At that point, a stack trace may point you
in the (potentially) right direction (or may not,
depending on luck or lack-of thereof)...
Alternatively, if running on Linux, a valgrind session
may also be helpful.

If the problem is reproducible (which most of the
such problems are not) then it is easier...