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| author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-02-09 03:15:20 +0000 |
|---|---|---|
| committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-02-09 03:15:20 +0000 |
| commit | d4d966f9674008ee2b9b5bcb121e68441d50330d () | |
| tree | 2aa41a9f49bae0d161124c28de820402c582d71d | |
| parent | bf618557b1ce35094379448478261b9db6af5010 (diff) | |
sprintf.c: overflow check
* sprintf.c (ruby_do_vsnprintf): pathologically, get rid of negative value when the result length exceeds INT_MAX. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62328 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
| -rw-r--r-- | sprintf.c | 9 |
1 files changed, 6 insertions, 3 deletions
@@ -1275,7 +1275,7 @@ ruby_vsnprintf(char *str, size_t n, const char *fmt, va_list ap) static int ruby_do_vsnprintf(char *str, size_t n, const char *fmt, va_list ap) { - int ret; rb_printf_buffer f; f._flags = __SWR | __SSTR; @@ -1283,9 +1283,12 @@ ruby_do_vsnprintf(char *str, size_t n, const char *fmt, va_list ap) f._bf._size = f._w = str ? (n - 1) : 0; f.vwrite = BSD__sfvwrite; f.vextra = 0; - ret = (int)BSD_vfprintf(&f, fmt, ap); if (str) *f._p = 0; - return ret; } int |