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No longer segfault when using a typeclass with a self referencing type (#19467)

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Jason Beetham 2022-02-02 01:38:21 -07:00 • committed by GitHub
commit 1830a3b505
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2 changed files with 14 additions and 1 deletions
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compiler/sigmatch.nim
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@ -1688,7 +1688,8 @@ proc typeRel(c: var TCandidate, f, aOrig: PType,
var aa = a
while aa.kind in {tyTypeDesc, tyGenericParam} and aa.len > 0:
aa = lastSon(aa)
if aa.kind == tyGenericParam:
if aa.kind in {tyGenericParam} + tyTypeClasses:
# If the constraint is a genericParam or typeClass this isGeneric
return isGeneric
result = typeRel(c, f.base, aa, flags)
if result > isGeneric: result = isGeneric