Warnings while building bitlbee

[Matěj Cepl <mcepl@…>]

Just that it may be interesting to investigate warnings on the build of bitlbee on Fedora.

* Compiling irc.c
ipc.c: In function 'ipc_readline':
ipc.c:583:5: warning: dereferencing type-punned pointer will break strict-aliasing rules
ipc.c: In function 'ipc_send_fd':
ipc.c:766:2: warning: dereferencing type-punned pointer will break strict-aliasing rules
...
* Compiling io.c
msn_util.c: In function 'msn_handler':
msn_util.c:333:8: warning: ignoring return value of 'write', declared with attribute warn_unused_result
msn_util.c:334:8: warning: ignoring return value of 'write', declared with attribute warn_unused_result

[Artem Savkov <artem.savkov@…>]

Can confirm this. Though it happens only with -O2 and higher.

[dx]

Strict aliasing ones fixed in ​https://github.com/bitlbee/bitlbee/commit/129e2825aa6d5e1d34c58cec57a0db312ccc6b87

Ignoring the return value of write, tbh, I don't care. They are harmless, especially compared to the strict aliasing ones. Also I can only see them when compiling with older gcc in a different distro.