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| author | Araq <rumpf_a@web.de> | 2013-07-09 15:05:46 -0700 |
|---|---|---|
| committer | Araq <rumpf_a@web.de> | 2013-07-09 15:05:46 -0700 |
| commit | 1af2d94860eb56446c1cc0eaddebb2a79a8e3ff8 (patch) | |
| tree | 79a3e8d505b291358f2a3cb13cbb2daba9bf7b47 | |
| parent | dbb87bc557ef633ad544502d90137a6f55e67dc4 (diff) | |
| parent | 172945de31d152e362636daca3fb968481d96bdb (diff) | |
| download | Nim-1af2d94860eb56446c1cc0eaddebb2a79a8e3ff8.tar.gz | |
Merge pull request #519 from gradha/pr_guards_against_nil_ast
Avoids usefulFact recursion with nil parameter. Fixes #518.
| -rw-r--r-- | compiler/guards.nim | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/guards.nim b/compiler/guards.nim index f02a53684..c43e918d9 100644 --- a/compiler/guards.nim +++ b/compiler/guards.nim @@ -187,7 +187,8 @@ proc usefulFact(n: PNode): PNode = # if a: # ... # We make can easily replace 'a' by '2 < x' here: - result = usefulFact(n.sym.ast) + if n.sym.ast != nil: + result = usefulFact(n.sym.ast) elif n.kind == nkStmtListExpr: result = usefulFact(n.lastSon) |