Commit 87209954a74bbf9b82b7ab24c0389a4a133edd31 | zig

author	Mason Remaley <mason@anthropicstudios.com> 2025-02-26 14:53:14-08:00
committer	Matthew Lugg <mlugg@mlugg.co.uk> 2025-04-02 05:54:04+01:00
log	87209954a74bbf9b82b7ab24c0389a4a133edd31
tree	6f940ec8607aa8a0ab9569b4c805ebacaf3d3801
parent	06ee383da9a23016dcb25ff7cb6811e3dc2c387e
signature	Commit is signed but in an unrecognized format.

Zcu: fix ZOIR cache bugs

* When saving bigint limbs, we gave the iovec the wrong length, meaning
  bigint data (and the following string and compile error data) was corrupted.
* When updating a stale ZOIR cache, we failed to truncate the file, so
  just wrote more bytes onto the end of the stale cache.

2 files changed, 2 insertions(+), 1 deletions(-)

src
- Zcu.zig
- Zcu
  - PerThread.zig

src/Zcu.zig+1-1

...	...	@@ -2753,7 +2753,7 @@ pub fn saveZoirCache(cache_file: std.fs.File, stat: std.fs.File.Stat, zoir: Zoir
2753	2753	},
2754	2754	.{
2755	2755	.base = @ptrCast(zoir.limbs),
2756		.len = zoir.limbs.len * 4,
	2756	.len = zoir.limbs.len * @sizeOf(std.math.big.Limb),
2757	2757	},
2758	2758	.{
2759	2759	.base = zoir.string_bytes.ptr,

src/Zcu/PerThread.zig+1

...	...	@@ -234,6 +234,7 @@ pub fn updateFile(
234	234	error.FileTooBig => unreachable, // 0 is not too big
235	235	else => \|e\| return e,
236	236	};
	237	try cache_file.seekTo(0);
237	238
238	239	if (stat.size > std.math.maxInt(u32))
239	240	return error.FileTooBig;