Bug#799993: librdkafka: FTBFS: error: assuming signed overflow does not occur when assuming that (X + c) >= X is always true

[YunQiang Su]

On Fri, 25 Sep 2015 08:04:59 +0100 Chris Lamb <la...@debian.org> wrote:
> Source: librdkafka
> Version: 0.8.6-1
> Severity: serious
> Justification: fails to build from source
> User: reproducible-bui...@lists.alioth.debian.org
> Usertags: ftbfs
> X-Debbugs-Cc: reproducible-bui...@lists.alioth.debian.org
>
> Dear Maintainer,
>
> librdkafka fails to build from source in unstable/amd64:
>
>   [..]
>
>   gcc -MD -MP -Wdate-time -D_FORTIFY_SOURCE=2 -Wdate-time
>   -D_FORTIFY_SOURCE=2 -g -O2 -fPIC -Wall -Werror -Wfloat-equal
>   -Wpointer-arith -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -fPIC -Wall
>   -Werror -Wfloat-equal -Wpointer-arith -g -O2 -fstack-protector-strong
>   -Wformat -Werror=format-security -g -O2 -fstack-protector-strong
>   -Wformat -Werror=format-security -g -O2 -fstack-protector-strong
>   -Wformat -Werror=format-security -c rdlog.c -o rdlog.o
>   rdlog.c: In function 'rd_hexdump':
>   rdlog.c:39:6: error: assuming signed overflow does not occur when
>   assuming that (X + c) >= X is always true [-Werror=strict-overflow]
>    void rd_hexdump (FILE *fp, const char *name, const void *ptr, size_t
>    len) {
>         ^
>   cc1: all warnings being treated as errors
>   ../mklove/Makefile.base:70: recipe for target 'rdlog.o' failed
>   make[2]: *** [rdlog.o] Error 1
>   make[2]: Leaving directory '/tmp/buildd/librdkafka-0.8.6/src'
>
>   [..]
>
> The full build log is attached or can be viewed here:
>
>     
> https://reproducible.debian.net/logs/unstable/amd64/librdkafka_0.8.6-1.build1.log.gz

I NMUed this package to 5-days delay with the attached patch.

>
>
> Regards,
>
> --
>       ,''`.
>      : :'  :     Chris Lamb
>      `. `'`      la...@debian.org / chris-lamb.co.uk
>        `-

librdkafka.debdiff
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