mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2025-12-06 14:23:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

std.crypto.tls.Client: fix @memcpy crash in limitedOverlapCopy

Browse Source 
Resolves: #15928
This commit is contained in:
mlugg 2023-06-12 22:00:56 +01:00 committed by Andrew Kelley
parent 028f2ed30f
commit 9e61ba19e9
1 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/std/crypto/tls/Client.zig
View File

@ -1256,10 +1256,8 @@ fn limitedOverlapCopy(frag: []u8, in: usize) void {
// A single, non-overlapping memcpy suffices. // A single, non-overlapping memcpy suffices.
@memcpy(frag[0..first.len], first); @memcpy(frag[0..first.len], first);
} else { } else {
// Need two memcpy calls because one alone would overlap. // One memcpy call would overlap, so just do this instead.
@memcpy(frag[0..in], first[0..in]); std.mem.copyForwards(u8, frag, first);
const leftover = first.len - in;
@memcpy(frag[in..][0..leftover], first[in..][0..leftover]);
} }
} }