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-rw-r--r--lib/compress.js3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/compress.js b/lib/compress.js
index f7fedeb2..7202219a 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -3738,7 +3738,7 @@ merge(Compressor.prototype, {
head.push(def);
} else {
var value = def.value
- && (sym.references.length != 1 || !sym.replaced)
+ && !def.value.single_use
&& def.value.drop_side_effect_free(compressor);
if (value) {
AST_Node.warn("Side effects in initialization of unused variable {name} [{file}:{line},{col}]", template(def.name));
@@ -6158,6 +6158,7 @@ merge(Compressor.prototype, {
if (single_use && fixed) {
def.single_use = false;
fixed._squeezed = true;
+ fixed.single_use = true;
if (fixed instanceof AST_Defun) {
fixed = make_node(AST_Function, fixed, fixed);
fixed.name = make_node(AST_SymbolLambda, fixed.name, fixed.name);