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fixes #23556; typeinfo.extendSeq generates random values in ORC (#23557)

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fixes #23556

It should somehow handle default fields in the future
This commit is contained in:
ringabout
2024-05-03 22:29:56 +08:00
committed by GitHub
parent d772186b2d
commit 36bf3fa47b
3 changed files with 28 additions and 2 deletions
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7
lib/core/typeinfo.nim
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@@ -129,7 +129,9 @@ when not defined(gcDestructors):
else:
proc nimNewObj(size, align: int): pointer {.importCompilerProc.}
proc newSeqPayload(cap, elemSize, elemAlign: int): pointer {.importCompilerProc.}
proc prepareSeqAdd(len: int; p: pointer; addlen, elemSize, elemAlign: int): pointer {.
proc prepareSeqAddUninit(len: int; p: pointer; addlen, elemSize, elemAlign: int): pointer {.
importCompilerProc.}
proc zeroNewElements(len: int; p: pointer; addlen, elemSize, elemAlign: int) {.
importCompilerProc.}
template `+!!`(a, b): untyped = cast[pointer](cast[int](a) + b)
@@ -221,7 +223,8 @@ proc extendSeq*(x: Any) =
var s = cast[ptr NimSeqV2Reimpl](x.value)
let elem = x.rawType.base
if s.p == nil or s.p.cap < s.len+1:
s.p = cast[ptr NimSeqPayloadReimpl](prepareSeqAdd(s.len, s.p, 1, elem.size, elem.align))
s.p = cast[ptr NimSeqPayloadReimpl](prepareSeqAddUninit(s.len, s.p, 1, elem.size, elem.align))
zeroNewElements(s.len, s.p, 1, elem.size, elem.align)
inc s.len
else:
var y = cast[ptr PGenSeq](x.value)[]