[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#37585: Undefined behavior in nl, print_lineno
|
From: |
Roland Illig |
|
Subject: |
bug#37585: Undefined behavior in nl, print_lineno |
|
Date: |
Wed, 2 Oct 2019 16:50:53 +0200 |
|
User-agent: |
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 |
The current code says:
next_line_no = line_no + page_incr;
if (next_line_no < line_no)
die (EXIT_FAILURE, 0, _("line number overflow"));
Since intmax_t is a regular integer type, overflow invokes undefined
behavior and must therefore be checked using other means.
- bug#37585: Undefined behavior in nl, print_lineno,
Roland Illig <=