2012/9/26 Eric Blake <ebl...@redhat.com>:
> On 09/25/2012 01:54 PM, Игорь Пашев wrote:
>> So:
>>
>> # ldd /usr/bin/m4
>>       linux-vdso.so.1 =>  (0x00007fff3fdff000)
>>       libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fd42a210000)
>>       /lib64/ld-linux-x86-64.so.2 (0x00007fd42a5bc000)
>
> Your point?  libsigsegv is typically linked statically, even though it
> is also possible to set things up to link dynamically.
>
> The real test is whether you get nice stack overflow detection:
>
> $ echo 'changequote([,])define(a,[a(a])a' | m4
> m4: stack overflow
>
> which is only possible if m4 linked against libsigsegv (whether
> statically or dynamically).


Well, thus m4 needs to build-depend on libsigsegv-dev, but is does not:

# cat /var/tmp/m4-1.4.16/debian/control
Source: m4
Section: interpreters
Priority: standard
Maintainer: Santiago Vila <sanv...@debian.org>
Standards-Version: 3.9.2
Build-Depends: debhelper (>= 9), texi2html (>= 1.82)
Homepage: http://www.gnu.org/software/m4/


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