tree cb5a6dade1296992775f07619eb1abf702981ded
parent 9f34853f7c6b459fb473d75cb78372406f69d7b2
author Ray Lai <ray@raylai.com> 1464013852 +0800
committer Gleydson Soares <gsoares@gmail.com> 1491609872 +0000

9term: Add missing parentheses, preventing buffer overflow.

(el-sr) is the string length and (sizeof wdir - strlen(name) - 20)
is the buffer size. When the string length is greater than the
buffer size, the beginning of the string is supposed to be trimmed
to fit in the buffer size. Unfortunately a pair of parentheses were
missing, pointing sr outside the buffer, and the for loop below
then reads outside the buffer. For certain binary data printed in
a window, it causes a segfault.

Change-Id: Iffeaa348260ee2a5a36d9577308fb8d1c1688d05
Reviewed-on: https://plan9port-review.googlesource.com/1540
Reviewed-by: Gleydson Soares <gsoares@gmail.com>