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fixes #23936; opcParseFloat accepts the wrong register as the first param [backport] (#23941)

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fixes #23936
follow up https://github.com/nim-lang/Nim/pull/20527
This commit is contained in:
ringabout
2024-08-12 20:43:13 +08:00
committed by GitHub
parent e0e698be9a
commit b215ec3735
2 changed files with 12 additions and 1 deletions
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2
compiler/vm.nim
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@@ -1363,7 +1363,7 @@ proc rawExecute(c: PCtx, start: int, tos: PStackFrame): TFullReg =
else:
internalError(c.config, c.debug[pc], "opcParseFloat: Incorrectly created openarray")
else:
regs[ra].intVal = parseBiggestFloat(regs[ra].node.strVal, rcAddr.floatVal)
regs[ra].intVal = parseBiggestFloat(regs[rb].node.strVal, rcAddr.floatVal)
of opcRangeChck:
let rb = instr.regB

11
tests/stdlib/tparseutils.nim
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@@ -99,3 +99,14 @@ block: # With this included, static: test() crashes the compiler (from a
checkParseSize " 12" , 0, 1 # Leading white
# Value Edge cases
checkParseSize "9223372036854775807", 19, int64.high
block: # bug #23936
func parsePyFloat(
a: openArray[char], # here must be openArray instead of string to reproduce this bug
res: var BiggestFloat): int =
result = parseFloat(a, res)
static:
var f = 0.0
doAssert "1.0".parsePyFloat(f) == 3
doAssert f == 1.0