Catch errors escaping from Typemod.initial_env
for 4.08, 4.09 and 4.10
#1130
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Running Merlin in an invalid environment (containing interfaces from older version of OCaml, or corrupted ones) would let a top-level failure escape. It is now caught and handled like a normal typing error.
This behavior is also tested to prevent future regressions.
Note: I discovered that
Location.none
has changed in recent versions of OCaml (default line used to be -1, it is now taken fromLexing.dummy_pos
which defines it as 0). That might lead to surprising behaviors in ppx that rely on omp for instant. Too hard to regularize tests, I rely on jq to filter discrepancies.