merge-ort: handle cached rename & trivial resolution interaction better#2095
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newren wants to merge 1 commit intogitgitgadget:masterfrom
Open
merge-ort: handle cached rename & trivial resolution interaction better#2095newren wants to merge 1 commit intogitgitgadget:masterfrom
newren wants to merge 1 commit intogitgitgadget:masterfrom
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Back in commit a562d90 (merge-ort: fix failing merges in special corner case, 2025-11-03), we hit a rename assertion due to a trivial directory resolution affecting the parent of a cached rename. Since the path didn't need to be considered, we side-stepped it with if (!newinfo) continue; in process_renames(). We have since run into a case in production where a trivial resolution of a file affects the direct target of a cached rename rather than a parent directory of it. Add a testcase demonstrating this additional case. Now, if we were to follow the lead of commit a562d90, we could resolve this alternate case with an extra condition on the above if: if (!newinfo || newinfo->merged.clean) continue; However, if we had done that earlier, we would have made 979ee83 (merge-ort: fix corner case recursive submodule/directory conflict handling, 2025-12-29) harder to find and fix, and this particular position for this condition isn't actually at the root of the issue but downstream from it. Instead, let's rip out this if-check from a562d90 and put in an alternative that more directly addresses trivially resolved paths that happen to be cached renames or parent directories thereof, which is a better fix for the original testcase and which also solves the newly added testcase as well. Signed-off-by: Elijah Newren <newren@gmail.com>
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Submitted as pull.2095.git.1776724214171.gitgitgadget@gmail.com To fetch this version into To fetch this version to local tag |
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Longstanding bug discovered recently.