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Add len check for newIfStmt to avoid segfault (#11032)

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Jasper Jenkins
2019-04-15 08:02:25 -07:00
committed by Andreas Rumpf
parent e2848ccd2b
commit a68c5662f2
1 changed files with 2 additions and 0 deletions
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lib/core/macros.nim
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@@ -1105,6 +1105,8 @@ proc newIfStmt*(branches: varargs[tuple[cond, body: NimNode]]):
## )
##
result = newNimNode(nnkIfStmt)
if len(branches) < 1:
error("If statement must have at least one branch")
for i in branches:
result.add(newTree(nnkElifBranch, i.cond, i.body))