Summary:	ASTERISK-24732: [patch]CLI "core show channel" gets "failed to extend from %d to %d" message for large native formats list.
Reporter:	Richard Mudgett (rmudgett)	Labels:
Date Opened:	2015-01-28 13:15:55.000-0600	Date Closed:	2015-11-10 11:44:08.000-0600
Priority:	Major	Regression?
Status:	Closed/Complete	Components:	Core/General
Versions:	13.1.0	Frequency of Occurrence	Occasional
Related Issues:	is duplicated by ASTERISK-25533 [patch] buffer for ast_format_cap_get_names only 64 bytes
Environment:		Attachments:	( 0) jira_asterisk_24732_example_v13.patch
Description:	Occasionally I get "failed to extend from %d to %d" messages output.  In this case I performed a CLI "core show channel CBRec/xxx" and got the message for the native formats on the channel. The culprit is the ast_str variable is declared too small to list all formats.  An audit is need for the uses of ast_str_alloca() when used to hold the format capabilities string.  Currently ast_str_alloca(64) is used throughout the code base for this particular case.  The 64 needs to be replaced with a define to eliminate the magic number and the number needs to be increased to 256 when all codecs are allowed.
Comments: