| author |  Matthew Lugg <mlugg@mlugg.co.uk> 2025-11-10 12:56:35+00:00 |
| committer | Matthew Lugg <mlugg@mlugg.co.uk> 2025-11-10 12:56:35+00:00 |
| log | 13993c4f62d8603aa5a25de70e2d111a01cbfaab |
| tree | f6148a9c44f6acb600086675a59a9704c6d99230 |
| parent | 6d280dc1b0779209b4790da9e939d8254d11348a |
| signature |  Commit is signed but in an unrecognized format. |
compiler: warn when using -fincremental with LLVM backend
This configuration hasn't had much work put into it yet, so is all but
guaranteed to miscompile or crash. Since users are starting to try out
`-fincremental`, and LLVM is still the default backend in many cases,
it's worth having this warning to avoid bug reports like
https://github.com/ziglang/zig/issues/25873.1 files changed, 4 insertions(+), 0 deletions(-)
src
src/main.zig+4
| ... | ... | @@ -3360,6 +3360,10 @@ fn buildOutputType( |
| 3360 | 3360 | fatal("--debug-incremental requires -fincremental", .{}); |
| 3361 | 3361 | } |
| 3362 | 3362 | |
| 3363 | if (incremental and create_module.resolved_options.use_llvm) { | |
| 3364 | warn("-fincremental is currently unsupported by the LLVM backend; crashes or miscompilations are likely", .{}); | |
| 3365 | } | |
| 3366 | ||
| 3363 | 3367 | const cache_mode: Compilation.CacheMode = b: { |
| 3364 | 3368 | // Once incremental compilation is the default, we'll want some smarter logic here, |
| 3365 | 3369 | // considering things like the backend in use and whether there's a ZCU. |