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Clean up and ensure proper usage of alloca()

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This replaces all calls to alloca() with ast_alloca() which calls gcc's
__builtin_alloca() to avoid BSD semantics and removes all NULL checks
on memory allocated via ast_alloca() and ast_strdupa().

(closes issue ASTERISK-20125)
Review: https://reviewboard.asterisk.org/r/2032/
Patch-by: Walter Doekes (wdoekes)
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Merged revisions 370642 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 370643 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@370655 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kinsey Moore
2012-07-31 20:21:43 +00:00
parent 6c23a60f80
commit 9b16c8b0f6
64 changed files with 317 additions and 399 deletions
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2
funcs/func_channel.c
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@@ -684,7 +684,7 @@ static int func_mchan_read(struct ast_channel *chan, const char *function,
char *data, struct ast_str **buf, ssize_t len)
{
struct ast_channel *mchan = ast_channel_get_by_name(ast_channel_linkedid(chan));
char *template = alloca(4 + strlen(data));
char *template = ast_alloca(4 + strlen(data));
sprintf(template, "${%s}", data); /* SAFE */
ast_str_substitute_variables(buf, len, mchan ? mchan : chan, template);
if (mchan) {