diff options
Diffstat (limited to 'src/libbio')
| -rw-r--r-- | src/libbio/bseek.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/src/libbio/bseek.c b/src/libbio/bseek.c index c9e4493e..4e79affd 100644 --- a/src/libbio/bseek.c +++ b/src/libbio/bseek.c @@ -5,6 +5,7 @@ off_t Bseek(Biobuf *bp, off_t offset, int base) { vlong n, d; + int bufsz; switch(bp->state) { default: @@ -28,13 +29,16 @@ Bseek(Biobuf *bp, off_t offset, int base) */ if(base == 0) { d = n - Boffset(bp); - bp->icount += d; - if(d >= 0) { - if(bp->icount <= 0) - return n; - } else { - if(bp->ebuf - bp->gbuf >= -bp->icount) - return n; + bufsz = bp->ebuf - bp->gbuf; + if(-bufsz <= d && d <= bufsz){ + bp->icount += d; + if(d >= 0) { + if(bp->icount <= 0) + return n; + } else { + if(bp->ebuf - bp->gbuf >= -bp->icount) + return n; + } } } |