• Matthew Dempsky's avatar
    cmd/compile: fix method set computation for shadowed methods · 7b177b1a
    Matthew Dempsky authored
    In expandmeth, we call expand1/expand0 to build a list of all
    candidate methods to promote, and then we use dotpath to prune down
    which names actually resolve to a promoted method and how.
    
    However, previously we still computed "followsptr" based on the
    expand1/expand0 traversal (which is depth-first), rather than
    dotpath (which is breadth-first). The result is that we could
    sometimes end up miscomputing whether a particular promoted method
    involves a pointer traversal, which could result in bad code
    generation for method trampolines.
    
    Fixes #24547.
    
    Change-Id: I57dc014466d81c165b05d78b98610dc3765b7a90
    Reviewed-on: https://go-review.googlesource.com/102618Reviewed-by: 's avatarRobert Griesemer <gri@golang.org>
    7b177b1a
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