mirrors/zig
1
0
Fork 0
mirror of https://codeberg.org/ziglang/zig.git synced 2025-12-06 13:54:21 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Io.Reader fix defaultReadVec

Browse source 
Running tar.pipeToFileSystem compressed_mingw_includes.tar file from #24732
finishes in infinite loop calling defaultReadVec with:
r.seek = 1024
r.end = 1024
r.buffer.len = 1024
first.len = 512
that combination calls vtable.stream with 0 capacity writer and loops
forever.

Comment is to use whichever has larger capacity, and this fix reflects that.
This commit is contained in:
Igor Anić 2025-08-08 17:21:45 +02:00 • committed by Andrew Kelley
parent 23fff3442d
commit 3ea015db96
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
lib/std/Io/Reader.zig
View file

@ -426,7 +426,7 @@ pub fn readVec(r: *Reader, data: [][]u8) Error!usize {
/// Writes to `Reader.buffer` or `data`, whichever has larger capacity.
pub fn defaultReadVec(r: *Reader, data: [][]u8) Error!usize {
const first = data[0];
if (r.seek == r.end and first.len >= r.buffer.len) {
if (first.len >= r.buffer.len - r.end) {
var writer: Writer = .{
.buffer = first,
.end = 0,