| author |  Isaac Freund <mail@isaacfreund.com> 2021-11-26 19:33:42+01:00 |
| committer |  Andrew Kelley <andrew@ziglang.org> 2021-11-26 14:35:46-08:00 |
| log | b196dd1d7958aee86095bd06190eee484a562488 |
| tree | 43265d5c3ef346f57a041c107b9529880d4cac53 |
| parent | 7c2cc45ad87b621831ac4b8cada809c2d88cdf0d |
std.system: fix slice bounds in preadMin()
If a partial read occurs past the halfway point, buf.len - i will be
less than i, which is illegal. The end bound is also entirely unecessary
in this case, so just remove it.1 files changed, 1 insertions(+), 1 deletions(-)
lib- std
- zig
lib/std/zig/system.zig+1-1
| ... | ... | @@ -922,7 +922,7 @@ pub const NativeTargetInfo = struct { |
| 922 | 922 | fn preadMin(file: fs.File, buf: []u8, offset: u64, min_read_len: usize) !usize { |
| 923 | 923 | var i: usize = 0; |
| 924 | 924 | while (i < min_read_len) { |
| 925 | const len = file.pread(buf[i .. buf.len - i], offset + i) catch |err| switch (err) { | |
| 925 | const len = file.pread(buf[i..], offset + i) catch |err| switch (err) { | |
| 926 | 926 | error.OperationAborted => unreachable, // Windows-only |
| 927 | 927 | error.WouldBlock => unreachable, // Did not request blocking mode |
| 928 | 928 | error.NotOpenForReading => unreachable, |