facebook/hhvm — pull request #2088 by kristapsk (2014-03-17 18:52:26+00:00)
Title: fix compiler warning

Get rid of scary compiler warning, should not change any behavor.
```
/usr/include/bits/stdio2.h:65:44: warning: call to int __builtin___snprintf_chk(char*, long unsigned int, int, long unsigned int, const char*, ...) will always overflow destination buffer [enabled by default]
```