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| author | Luke Lau <luke_lau@icloud.com> | 2020-05-28 20:51:32 +0100 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2020-06-10 04:17:22 -0400 |
| commit | 32fd37f5e1e6dc6e3b664ae41e0041ed8a19ae21 (patch) | |
| tree | 253ef3b37d1db85a67f19cfbc8b3e7263eac3d03 /libffi | |
| parent | 6d49d5be904c0c01788fa7aae1b112d5b4dfaf1c (diff) | |
| download | haskell-32fd37f5e1e6dc6e3b664ae41e0041ed8a19ae21.tar.gz | |
Fix lookupGlobalOccRn_maybe sometimes reporting an error
In some cases it was possible for lookupGlobalOccRn_maybe to return an
error, when it should be returning a Nothing. If it called
lookupExactOcc_either when there were no matching GlobalRdrElts in the
otherwise case, it would return an error message. This could be caused
when lookupThName_maybe in Template Haskell was looking in different
namespaces (thRdrNameGuesses), guessing different namespaces that the
name wasn't guaranteed to be found in.
However, by addressing this some more accurate errors were being lost in
the conversion to Maybes. So some of the lookup* functions have been
shuffled about so that errors should always be ignored in
lookup*_maybes, and propagated otherwise.
This fixes #18263
Diffstat (limited to 'libffi')
0 files changed, 0 insertions, 0 deletions