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prevent copying of NULL (bug #4307)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5708 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2005-05-17 16:45:42 +00:00
parent c4ebf00d48
commit 376bc46af5
1 changed files with 6 additions and 4 deletions
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8
funcs/func_logic.c
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@@ -52,12 +52,14 @@ static char *builtin_function_if(struct ast_channel *chan, char *cmd, char *data
*iffalse = '\0'; *iffalse = '\0';
iffalse++; iffalse++;
} }
} else }
iffalse = "";
if (expr && iftrue) { if (expr && iftrue) {
ret = ast_true(expr) ? iftrue : iffalse; ret = ast_true(expr) ? iftrue : iffalse;
strncpy(buf, ret, len); if (ret) {
ast_copy_string(buf, ret, len);
ret = buf; ret = buf;
}
} else { } else {
ast_log(LOG_WARNING, "Syntax $(if <expr>?[<truecond>][:<falsecond>])\n"); ast_log(LOG_WARNING, "Syntax $(if <expr>?[<truecond>][:<falsecond>])\n");
ret = NULL; ret = NULL;