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fix #10964 by honoring pointer deref syntax if a reified openarray is used to get an array's length (#21925)

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* fix #10964

* add test
This commit is contained in:
heterodoxic
2023-05-27 06:54:41 +02:00
committed by GitHub
parent 09f36f5198
commit 6128ef53c5
2 changed files with 17 additions and 2 deletions
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13
compiler/ccgexprs.nim
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@@ -1882,8 +1882,17 @@ proc genArrayLen(p: BProc, e: PNode, d: var TLoc, op: TMagic) =
if op == mHigh: unaryExpr(p, e, d, "($1Len_0-1)")
else: unaryExpr(p, e, d, "$1Len_0")
else:
if op == mHigh: unaryExpr(p, e, d, "($1.Field1-1)")
else: unaryExpr(p, e, d, "$1.Field1")
let isDeref = a.kind in {nkHiddenDeref, nkDerefExpr}
if op == mHigh:
if isDeref:
unaryExpr(p, e, d, "($1->Field1-1)")
else:
unaryExpr(p, e, d, "($1.Field1-1)")
else:
if isDeref:
unaryExpr(p, e, d, "$1->Field1")
else:
unaryExpr(p, e, d, "$1.Field1")
of tyCstring:
if op == mHigh: unaryExpr(p, e, d, "($1 ? (#nimCStrLen($1)-1) : -1)")
else: unaryExpr(p, e, d, "($1 ? #nimCStrLen($1) : 0)")

6
tests/ccgbugs/t10964.nim Normal file
View File

@@ -0,0 +1,6 @@
func test*(input: var openArray[int32], start: int = 0, fin: int = input.len - 1) =
discard
var someSeq = @[1'i32]
test(someSeq)