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Fixes #1642.

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This commit is contained in:
Dominik Picheta 2015-01-28 23:09:20 +00:00
commit 3ac2e00334
2 changed files with 12 additions and 2 deletions
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6
compiler/ccgexprs.nim
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@ -2095,7 +2095,11 @@ proc expr(p: BProc, n: PNode, d: var TLoc) =
# due to a bug/limitation in the lambda lifting, unused inner procs # due to a bug/limitation in the lambda lifting, unused inner procs
# are not transformed correctly. We work around this issue (#411) here # are not transformed correctly. We work around this issue (#411) here
# by ensuring it's no inner proc (owner is a module): # by ensuring it's no inner proc (owner is a module):
if prc.skipGenericOwner.kind == skModule: #
# We also check whether the proc captures its environment here to
# prevent issue #1642.
if prc.skipGenericOwner.kind == skModule and
tfCapturesEnv in prc.typ.flags:
if (optDeadCodeElim notin gGlobalOptions and if (optDeadCodeElim notin gGlobalOptions and
sfDeadCodeElim notin getModule(prc).flags) or sfDeadCodeElim notin getModule(prc).flags) or
({sfExportc, sfCompilerProc} * prc.flags == {sfExportc}) or ({sfExportc, sfCompilerProc} * prc.flags == {sfExportc}) or

6
tests/closure/tissue1642.nim Normal file
View file

@ -0,0 +1,6 @@
discard """
file: "tissue1642.nim"
"""
block:
var i = 0
proc p() = inc(i)