diff options
Diffstat (limited to 'sprintf.c')
-rw-r--r-- | sprintf.c | 11 |
1 files changed, 8 insertions, 3 deletions
@@ -1301,14 +1301,19 @@ ruby__sfvwrite(register rb_printf_buffer *fp, register struct __suio *uio) struct __siov *iov; VALUE result = (VALUE)fp->_bf._base; char *buf = (char*)fp->_p; - size_t len, n; - size_t blen = buf - RSTRING_PTR(result), bsiz = fp->_w; + long len, n; + long blen = buf - RSTRING_PTR(result), bsiz = fp->_w; if (RBASIC(result)->klass) { rb_raise(rb_eRuntimeError, "rb_vsprintf reentered"); } - if ((len = uio->uio_resid) == 0) + if (uio->uio_resid == 0) return 0; +#if SIZE_MAX > LONG_MAX + if (uio->uio_resid >= LONG_MAX) + rb_raise(rb_eRuntimeError, "too big string"); +#endif + len = (long)uio->uio_resid; CHECK(len); buf += blen; fp->_w = bsiz; |