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fixes #109

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This commit is contained in:
Araq 2012-05-20 10:56:17 +02:00
commit 15dd3a2251
9 changed files with 95 additions and 16 deletions
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6
compiler/ccgstmts.nim
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@ -235,6 +235,7 @@ proc genWhileStmt(p: BProc, t: PNode) =
preserveBreakIdx:
p.breakIdx = startBlock(p, "while (1) {$n")
p.blocks[p.breakIdx].isLoop = true
initLocExpr(p, t.sons[0], a)
if (t.sons[0].kind != nkIntLit) or (t.sons[0].intVal == 0):
let label = assignLabel(p.blocks[p.breakIdx])
@ -265,6 +266,11 @@ proc genBreakStmt(p: BProc, t: PNode) =
var sym = t.sons[0].sym
assert(sym.loc.k == locOther)
idx = sym.loc.a
else:
# an unnamed 'break' can only break a loop after 'transf' pass:
while idx >= 0 and not p.blocks[idx].isLoop: dec idx
if idx < 0 or not p.blocks[idx].isLoop:
InternalError(t.info, "no loop to break")
let label = assignLabel(p.blocks[idx])
blockLeaveActions(p, p.nestedTryStmts.len - p.blocks[idx].nestedTryStmts)
genLineDir(p, t)