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don't try to get the length of the string in the ast_dynamic_str object unless we know there is actually one there

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@42185 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2006-09-07 00:41:27 +00:00
parent f0e0963b2e
commit d5f812e0b1
1 changed files with 1 additions and 1 deletions
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main/utils.c
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@@ -1199,7 +1199,7 @@ int ast_dynamic_str_thread_build_va(struct ast_dynamic_str **buf, size_t max_len
struct ast_threadstorage *ts, int append, const char *fmt, va_list ap) struct ast_threadstorage *ts, int append, const char *fmt, va_list ap)
{ {
int res; int res;
int offset = append ? strlen((*buf)->str) : 0; int offset = (append && (*buf)->len) ? strlen((*buf)->str) : 0;
res = vsnprintf((*buf)->str + offset, (*buf)->len - offset, fmt, ap); res = vsnprintf((*buf)->str + offset, (*buf)->len - offset, fmt, ap);