Andrew Kelley d37ee79535 std.Build.Cache.hit: more discipline in error handling ... Previous commits 2b0929929d 4ea2f441df had this text: > There are no dir components, so you would think that this was > unreachable, however we have observed on macOS two processes racing to > do openat() with O_CREAT manifest in ENOENT. This appears to have been a misunderstanding based on the issue report #12138 and corresponding PR #12139 in which the steps to reproduce removed the cache directory in a loop which also executed detached Zig compiler processes. There is no evidence for the macOS kernel bug however the ENOENT is easily explained by the removal of the cache directory. This commit reverts those commits, ultimately reporting the ENOENT as an error rather than repeating the create file operation. However this commit also adds an explicit error set to `std.Build.Cache.hit` as well as changing the `failed_file_index` to a proper diagnostic field that fully communicates what failed, leading to more informative error messages on failure to check the cache. The equivalent failure when occuring for AstGen performs a fatal process kill, reasoning being that the compiler has an invariant of the cache directory not being yanked out from underneath it while executing. This could be made a more granular error in the future but I suspect such thing is not valuable to pursue. Related to #18340 but does not solve it.		2024-12-10 18:11:12 -08:00
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Cache	std.Build.Cache.Path: fix single-quote escaping format	2024-10-10 14:21:52 -07:00
Fuzz	Replace deprecated default initializations with decl literals	2024-09-12 16:01:23 +01:00
Step	std.Build: Detect pkg-config names with "lib" prefix	2024-11-29 15:11:14 -05:00
Cache.zig	std.Build.Cache.hit: more discipline in error handling	2024-12-10 18:11:12 -08:00
Fuzz.zig	Replace deprecated default initializations with decl literals	2024-09-12 16:01:23 +01:00
Module.zig	std.Target: Move isLib{C,Cxx}LibName() to std.zig.target.	2024-10-16 22:25:13 +02:00
Step.zig	std.Build.Cache.hit: more discipline in error handling	2024-12-10 18:11:12 -08:00
Watch.zig	std.Build.Watch: implement removing watches for kqueue	2024-10-24 23:31:56 -07:00