diff options
Diffstat (limited to 'lib/fstream/uncompress/gzip.c')
| -rw-r--r-- | lib/fstream/uncompress/gzip.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/lib/fstream/uncompress/gzip.c b/lib/fstream/uncompress/gzip.c index c2003db..1d6274c 100644 --- a/lib/fstream/uncompress/gzip.c +++ b/lib/fstream/uncompress/gzip.c @@ -18,6 +18,7 @@ static int precache(istream_t *base) { istream_t *wrapped = ((istream_comp_t *)base)->wrapped; istream_gzip_t *gzip = (istream_gzip_t *)base; + size_t avail_in, avail_out; int ret; for (;;) { @@ -25,10 +26,24 @@ static int precache(istream_t *base) if (ret != 0) return ret; - gzip->strm.avail_in = wrapped->buffer_used; - gzip->strm.next_in = wrapped->buffer; + avail_in = wrapped->buffer_used; + avail_out = BUFSZ - base->buffer_used; + + if (sizeof(size_t) > sizeof(uInt)) { + gzip->strm.avail_in = ~((uInt)0U); + gzip->strm.avail_out = ~((uInt)0U); + + if ((size_t)gzip->strm.avail_in > avail_in) + gzip->strm.avail_in = (uInt)avail_in; - gzip->strm.avail_out = BUFSZ - base->buffer_used; + if ((size_t)gzip->strm.avail_out > avail_out) + gzip->strm.avail_out = (uInt)avail_out; + } else { + gzip->strm.avail_in = (uInt)avail_in; + gzip->strm.avail_out = (uInt)avail_out; + } + + gzip->strm.next_in = wrapped->buffer; gzip->strm.next_out = base->buffer + base->buffer_used; ret = inflate(&gzip->strm, Z_NO_FLUSH); |