Merged revisions 62171 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r62171 | russell | 2007-04-27 11:14:11 -0500 (Fri, 27 Apr 2007) | 6 lines

If no variables were passed into pbx_substitute_variables_helper_full(), then
don't even bother creating a temporary bogus channel, since that is only for
allowing certain functions to operate on the variables as if they were on a
channel.  Most importantly, this fixes a crash.
(issue #9613, reported by callguy, fixed by me)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@62172 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/pbx.c b/main/pbx.c
index 0e4464a635b8f51b42c317fa69a94ad4992b4dd4..5f3f77b16820bbc2ea83cf4168ce4642a71ddd0c 100644 (file)
--- a/main/pbx.c
+++ b/main/pbx.c
@@ -1564,7 +1564,7 @@ static void pbx_substitute_variables_helper_full(struct ast_channel *c, struct v
                        parse_variable_name(vars, &offset, &offset2, &isfunction);
                        if (isfunction) {
                                /* Evaluate function */
-                               if (c)
+                               if (c || !headp)
                                        cp4 = ast_func_read(c, vars, workspace, VAR_BUF_SIZE) ? NULL : workspace;
                                else {
                                        struct varshead old;