http://snipplr.com/users/moshe Recent snippets posted on Snipplr.com en-us Sun, 19 May 2013 00:00:37 GMT http://snipplr.com/view/64968/performing-sprintf-without-overflowing-the-buffer/ The problem is that we don't know the size of the required output buffer. Providing a static buffer, no matter its size, runs a risk of overrunning the buffer. This snippet uses vsnprintf() to output an sprintf() string based on a variable length parameter list to a dynamically allocated output buffer. The function is provided with the size of the output buffer, and it returns -1 if the buffer is not large enough. In this case, the code reallocates a larger buffer and attempts once again to output the string. The vsnprintf() will succeed when the buffer is large enough.

]]> Mon, 21 May 2012 18:29:52 GMT http://snipplr.com/view/64968/performing-sprintf-without-overflowing-the-buffer/