Fix inference of one-arg return_type method#49407
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`Core.Compiler.return_type` has two methods:
- return_type(f, args::Type{<:Tuple})
- return_type(args::Type{<:Tuple})
Our inference code was only catching the first one.
Expand it to support both.
aviatesk
approved these changes
Apr 19, 2023
| end | ||
| argtypes_vec = Any[aft, af_argtype.parameters...] | ||
| else | ||
| argtypes_vec = Any[af_argtype.parameters...] |
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Maybe we should perform a check that is equivalent to (f, tt::DataType) case here?
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| argtypes_vec = Any[af_argtype.parameters...] | |
| aft = af_argtype.parameters[1] | |
| if (!(isType(aft) && !has_free_typevars(aft)) && | |
| !(isconcretetype(aft) && !(aft <: Builtin))) | |
| return UNKNOWN | |
| end | |
| argtypes_vec = Any[af_argtype.parameters...] |
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I don't think it's required. That check in the other branch is just to avoid accidentally catching the interp method.
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Core.Compiler.return_typehas two methods:Our inference code was only catching the first one. Expand it to support both.