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fixes #12033 (#12039)

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This commit is contained in:
Arne Döring
2019-08-26 20:14:21 +02:00
committed by Andreas Rumpf
parent 88814bbe98
commit ae9bb4474b
2 changed files with 15 additions and 2 deletions
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4
compiler/semstmts.nim
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@@ -1904,6 +1904,10 @@ proc semProcAux(c: PContext, n: PNode, kind: TSymKind,
discard
popProcCon(c)
else:
if s.kind in {skProc, skFunc} and s.typ[0] != nil and s.typ[0].kind == tyUntyped:
# `auto` is represented as `tyUntyped` at this point in compilation.
localError(c.config, n[paramsPos][0].info, "return type 'auto' cannot be used in forward declarations")
if s.kind == skMethod: semMethodPrototype(c, s, n)
if proto != nil: localError(c.config, n.info, errImplOfXexpected % proto.name.s)
if {sfImportc, sfBorrow, sfError} * s.flags == {} and s.magic == mNone:

13
tests/proc/tillegalreturntype.nim
View File

@@ -1,8 +1,11 @@
discard """
cmd: "nim check $file"
errmsg: ""
nimout: '''tillegalreturntype.nim(8, 11) Error: return type 'typed' is only valid for macros and templates
tillegalreturntype.nim(11, 11) Error: return type 'untyped' is only valid for macros and templates'''
nimout: '''
tillegalreturntype.nim(11, 11) Error: return type 'typed' is only valid for macros and templates
tillegalreturntype.nim(14, 11) Error: return type 'untyped' is only valid for macros and templates
tillegalreturntype.nim(17, 41) Error: return type 'auto' cannot be used in forward declarations
'''
"""
proc x(): typed =
@@ -10,3 +13,9 @@ proc x(): typed =
proc y(): untyped =
discard
proc test_proc[T, U](arg1: T, arg2: U): auto
proc test_proc[T, U](arg1: T, arg2: U): auto =
echo "Proc has been called"
return arg1 / arg2