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author | Nick Barnes <nick@tarides.com> | 2023-05-02 21:16:12 +0100 |
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committer | Nick Barnes <nick@tarides.com> | 2023-05-02 21:16:12 +0100 |
commit | d3a5c923939a1fc03cc14c005d61210d8c3bd546 (patch) | |
tree | 5459de2b7b6cbaa1167d18224f1ea5d256e2f3f7 /testsuite/tests/typing-misc/typetexp_errors.ml | |
parent | ad111da274b58d82249f92b8c79ee252bf25525b (diff) | |
parent | 23dab79a4e42856aa33816b9c79c3d4d79959cb9 (diff) | |
download | ocaml-d3a5c923939a1fc03cc14c005d61210d8c3bd546.tar.gz |
Merge branch 'trunk' into nick-get-copy
Diffstat (limited to 'testsuite/tests/typing-misc/typetexp_errors.ml')
-rw-r--r-- | testsuite/tests/typing-misc/typetexp_errors.ml | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/testsuite/tests/typing-misc/typetexp_errors.ml b/testsuite/tests/typing-misc/typetexp_errors.ml index 986d858586..4f71bd478b 100644 --- a/testsuite/tests/typing-misc/typetexp_errors.ml +++ b/testsuite/tests/typing-misc/typetexp_errors.ml @@ -1,5 +1,5 @@ (* TEST - * expect + expect; *) type ('a,'at,'any,'en) t = A of 'an @@ -31,3 +31,26 @@ Line 1, characters 6-9: ^^^ Error: The type variable name '_a is not allowed in programs |}] + +(* The next two hit the unification error case at the end of + Typetexp.globalize_used_variables. *) +let f (x: int as 'a) (y: float as 'a) = (x,y) +[%%expect{| +Line 1, characters 25-36: +1 | let f (x: int as 'a) (y: float as 'a) = (x,y) + ^^^^^^^^^^^ +Error: This type float should be an instance of type int +|}] + +type 'a t1 = 'a constraint 'a = 'b list +type 'a t2 = 'a constraint 'a = 'b option + +let f (x : 'a t1) = (assert false : 'a t2) +[%%expect{| +type 'a t1 = 'a constraint 'a = 'b list +type 'a t2 = 'a constraint 'a = 'b option +Line 4, characters 36-38: +4 | let f (x : 'a t1) = (assert false : 'a t2) + ^^ +Error: This type 'a option should be an instance of type 'b list +|}] |