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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) git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@62171 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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@@ -1642,7 +1642,7 @@ static void pbx_substitute_variables_helper_full(struct ast_channel *c, struct v
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parse_variable_name(vars, &offset, &offset2, &isfunction);
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parse_variable_name(vars, &offset, &offset2, &isfunction);
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if (isfunction) {
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if (isfunction) {
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/* Evaluate function */
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/* Evaluate function */
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if (c)
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if (c || !headp)
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cp4 = ast_func_read(c, vars, workspace, VAR_BUF_SIZE) ? NULL : workspace;
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cp4 = ast_func_read(c, vars, workspace, VAR_BUF_SIZE) ? NULL : workspace;
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else {
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else {
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struct varshead old;
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struct varshead old;
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