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* Indices of referenced captures * Line and column of `@src()` The second point aligns with a reversal of the "incremental compilation" section of https://github.com/ziglang/zig/issues/2029#issuecomment-645793168. This reversal was already done as #17688 (46a6d50), with the idea to push incremental compilation down the line. My proposal is to keep it as comptime-known, and simply re-analyze uses of `@src()` whenever their line/column change. I think this decision is reasonable for a few reasons: * The Zig compiler is quite fast. Occasionally re-analyzing a few functions containing `@src()` calls is perfectly acceptable and won't noticably impact update times. * The system described by Andrew in #2029 is currently vaporware. * The system described by Andrew in #2029 is non-trivial to implement. In particular, it requires some way to have backends update a single global in certain cases, without re-doing semantic analysis. There is no other part of incremental compilation which requires this. * Having `@src().line` be comptime-known is useful. For instance, #17688 was justified by broken Tracy integration because the source line couldn't be comptime-known.