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discard """
errormsg: "cannot prove 'variable' is not nil"
line: 31
"""
# bug #584
# Testprogram for 'not nil' check
{.experimental: "notnil".}
const testWithResult = true
type
A = object
B = object
C = object
a: ref A
b: ref B
proc testNotNil(c: ref C not nil) =
discard
when testWithResult:
proc testNotNilOnResult(): ref C =
new(result)
#result.testNotNil() # Here 'not nil' can't be proved
var variable: ref C
new(variable)
variable.testNotNil() # Here 'not nil' is proved
when testWithResult:
discard testNotNilOnResult()
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