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3 Commits

Author SHA1 Message Date
Máté Kocsis 36935e42ea Improve undefined variable error messages 
Closes GH-5312
 2020-03-31 13:02:32 +02:00
Nikita Popov 2f92957fd3 Convert some notices to warnings 
Part of https://wiki.php.net/rfc/engine_warnings.
 2019-10-02 10:34:08 +02:00
Nikita Popov 6079ba4b0c Inference: Fix undef handling for binary ops 
We need to be careful about correctly handling that undef results
in a null value. Otherwise, apart from simply generating incorrect
results, we may also end up performing non-monotonic lattice
transitions, thus causing an infinite type inference loop (see
test).
 2016-05-14 17:16:32 +02:00