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-rw-r--r--src/libexpr/nixexpr.cc12
1 files changed, 8 insertions, 4 deletions
diff --git a/src/libexpr/nixexpr.cc b/src/libexpr/nixexpr.cc
index ebdef96d9..cce8edc39 100644
--- a/src/libexpr/nixexpr.cc
+++ b/src/libexpr/nixexpr.cc
@@ -229,16 +229,19 @@ static void checkVarDefs2(set<Expr> & done, const ATermMap & defs, Expr e)
}
for (ATermIterator i(formals); i; ++i) {
Expr deflt;
+ set<Expr> done2;
if (matchDefFormal(*i, name, deflt))
- checkVarDefs2(done, defs2, deflt);
+ checkVarDefs2(done2, defs2, deflt);
}
- checkVarDefs2(done, defs2, body);
+ set<Expr> done2;
+ checkVarDefs2(done2, defs2, body);
}
else if (matchFunction1(e, name, body, pos)) {
ATermMap defs2(defs);
defs2.set(name, (ATerm) ATempty);
- checkVarDefs2(done, defs2, body);
+ set<Expr> done2;
+ checkVarDefs2(done2, defs2, body);
}
else if (matchRec(e, rbnds, nrbnds)) {
@@ -252,7 +255,8 @@ static void checkVarDefs2(set<Expr> & done, const ATermMap & defs, Expr e)
if (!matchBind(*i, name, value, pos)) abort(); /* can't happen */
defs2.set(name, (ATerm) ATempty);
}
- checkVarDefs2(done, defs2, (ATerm) rbnds);
+ set<Expr> done2;
+ checkVarDefs2(done2, defs2, (ATerm) rbnds);
}
else if (matchWith(e, with, body, pos)) {