tree 9c3ec07edc0dc8ec10c25f767938520556297531
parent cd9084f77683106ace2fb863080e7d10e71c39fc
author Thierry FOURNIER <tfournier@exceliance.fr> 1425735530 +0100
committer Willy Tarreau <w@1wt.eu> 1425921179 +0100
encoding latin1

BUG/MEDIUM: lua: segfault with buffer_replace2

The function buffer_contig_space() returns the contiguous space avalaible
to add data (at the end of the input side) while the function
hlua_channel_send_yield() needs to insert data starting at p. Here we
introduce a new function bi_space_for_replace() which returns the amount
of space that can be inserted at the head of the input side with one of
the buffer_replace* functions.

This patch proposes a function that returns the space avalaible after buf->p.