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fixes #24844; Invalid C codegen refc with generic types containing gc memory (#25160)

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fixes #24844

it may not be used in other places except in `genTraverseProc`,
we have to generate a `typedesc` for this case, not a weak `typedec`

(cherry picked from commit a77d1cc6c1)
This commit is contained in:
ringabout
2025-09-15 21:03:22 +08:00
committed by narimiran
parent 4c7ddcd79a
commit 2fc23370ec
3 changed files with 22 additions and 0 deletions
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3
compiler/ccgtypes.nim
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@@ -1886,6 +1886,9 @@ proc genTypeInfoV1(m: BModule; t: PType; info: TLineInfo): Rope =
of tyRef:
genTypeInfoAux(m, t, t, result, info)
if m.config.selectedGC in {gcMarkAndSweep, gcRefc, gcGo}:
# it may not be used in other places except in `genTraverseProc`,
# we have to generate a typedesc for this case, not a weak one
discard getTypeDesc(m, origType.last)
let markerProc = genTraverseProc(m, origType, sig)
m.s[cfsTypeInit3].addf("$1.marker = $2;$n", [tiNameForHcr(m, result), markerProc])
of tyPtr, tyRange, tyUncheckedArray: genTypeInfoAux(m, t, t, result, info)