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dad4e388b8
ref #26144
The C backend must not use `sfNeverRaises` to remove exception checks
from
virtual method calls. The flag describes only the selected base method
body,
while a vtable override may raise a catchable exception.
This change makes `canRaiseDisp` conservative for `skMethod` symbols and
adds a
regression test covering an exception raised by a child method invoked
through a
base reference.
(cherry picked from commit 8cb406cd7a)
21 lines
372 B
Nim
21 lines
372 B
Nim
discard """
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output: '''caught'''
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"""
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type
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Base = ref object of RootObj
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Child = ref object of Base
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method run(value: Base): string {.base.} =
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result = "base"
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method run(value: Child): string =
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raise newException(ValueError, "child")
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let value: Base = Child()
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try:
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discard value.run()
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quit "virtual method did not raise"
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except ValueError:
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echo "caught"
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