fixes #24974; SIGSEGV when raising Defect/doAssert #24985
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Araq
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Jun 9, 2025
| @@ -1234,7 +1234,9 @@ proc allPathsAsgnResult(p: BProc; n: PNode): InitResultEnum = | |||
| else: | |||
| allPathsInBranch(n[i].lastSon) | |||
| of nkCallKinds: | |||
| if canRaiseDisp(p, n[0]): | |||
| if canRaiseDisp(p, n[0]) or | |||
| (n[0].kind == nkSym and sfNoReturn in n[0].sym.flags): | |||
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But there can be calls that don't return that are not marked as noreturn.
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Other cases are already covered by canRaiseDisp, which is quite conservative about functions that never raises. In general, only functions in the system can be exempt from this checking. Otherwise, we have systemRaisesDefect for functions in the system
e.g.
proc `[]`*[T](s: openArray[T]; i: BackwardsIndex): T {.inline, systemRaisesDefect.} =
system.`[]`(s, s.len - int(i))We can treat noreturn function calls consistently as result must be initialized in these cases
|
Thanks for your hard work on this PR! Hint: mm: orc; opt: speed; options: -d:release |
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fixes #24974
requires
resultinitializations when encountering unreachable code (e.g.quit)