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-rw-r--r--src/libexpr/eval.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index 31aaad548..9eb5fc758 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -139,6 +139,7 @@ EvalState::EvalState()
, sSystem(symbols.create("system"))
, sOverrides(symbols.create("__overrides"))
, sOutputName(symbols.create("outputName"))
+ , sIgnoreNulls(symbols.create("__ignoreNulls"))
, baseEnv(allocEnv(128))
, baseEnvDispl(0)
, staticBaseEnv(false, 0)