Mercurial > vim
diff src/channel.c @ 10587:98ee4f22da6e v8.0.0183
patch 8.0.0183: ubsan warns for unaligned address
commit https://github.com/vim/vim/commit/7173b47958a238bb07f80b8f26fb232b0ea69b4a
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Jan 14 17:04:38 2017 +0100
patch 8.0.0183: ubsan warns for unaligned address
Problem: Ubsan warns for using a pointer that is not aligned.
Solution: First copy the address. (Yegappan Lakshmanan)
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sat, 14 Jan 2017 17:15:04 +0100 |
| parents | f83b6a0b6148 |
| children | c31782d57569 |
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--- a/src/channel.c +++ b/src/channel.c @@ -710,7 +710,14 @@ channel_open( channel_free(channel); return NULL; } - memcpy((char *)&server.sin_addr, host->h_addr, host->h_length); + { + char *p; + + /* When using host->h_addr directly ubsan warns for it to not be + * aligned. First copy the pointer to aviod that. */ + memcpy(&p, &host->h_addr, sizeof(p)); + memcpy((char *)&server.sin_addr, p, host->h_length); + } /* On Mac and Solaris a zero timeout almost never works. At least wait * one millisecond. Let's do it for all systems, because we don't know why