Commit Graph

4 Commits

Author SHA1 Message Date
Joe Groff
cec9e9e33a Opaque types require a newer Swift runtime.
Check the availability of decls that declare an opaque return type to ensure they deploy to a
runtime that supports opaque types.

rdar://problem/50731151
2019-05-15 11:39:53 -07:00
Doug Gregor
e29469b9c0 [Opaque result types] Fix mangling issues with opaque result types.
Fix a trio of issues involving mangling for opaque result types:
* Symbolic references to opaque type descriptors are not substitutions
* Mangle protocol extension contexts correctly
* Mangle generic arguments for opaque result types of generic functions

The (de-)serialization of generic parameter lists for opaque type
declarations is important for the last bullet, to ensure that the
mangling of generic arguments of opaque result types works across
module boundaries.

Fixes the rest of rdar://problem/50038754.
2019-04-22 17:10:45 -07:00
Joe Groff
b57f35220e Serialize opaque return type of var/subscript decls. 2019-04-17 14:46:22 -07:00
Joe Groff
141d6bfbf0 Add test for deserializing opaque types across modules 2019-04-17 14:43:32 -07:00