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reset argument value within loop after inline (#2699)

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This commit is contained in:
Alex Lam S.L
2018-01-02 01:24:53 +08:00
committed by GitHub
parent 2f3bddbaca
commit d838b4b52e
2 changed files with 29 additions and 5 deletions
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11
lib/compress.js
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@@ -3991,7 +3991,7 @@ merge(Compressor.prototype, {
}
}
if (is_func) {
var def, value, scope, level = -1;
var def, value, scope, in_loop, level = -1;
if (compressor.option("inline")
&& !fn.uses_arguments
&& !fn.uses_eval
@@ -4038,13 +4038,13 @@ merge(Compressor.prototype, {
return self;
function can_flatten_args(fn) {
var catches = Object.create(null), defs;
var catches = Object.create(null);
do {
scope = compressor.parent(++level);
if (scope instanceof AST_Catch) {
catches[scope.argname.name] = true;
} else if (scope instanceof AST_IterationStatement) {
defs = [];
in_loop = [];
} else if (scope instanceof AST_SymbolRef) {
if (scope.fixed_value() instanceof AST_Scope) return false;
}
@@ -4059,9 +4059,9 @@ merge(Compressor.prototype, {
|| scope.var_names()[arg.name]) {
return false;
}
if (defs) defs.push(arg.definition());
if (in_loop) in_loop.push(arg.definition());
}
return !defs || defs.length == 0 || !is_reachable(stat, defs);
return !in_loop || in_loop.length == 0 || !is_reachable(stat, in_loop);
}
function flatten_args(fn) {
@@ -4087,6 +4087,7 @@ merge(Compressor.prototype, {
}));
var sym = make_node(AST_SymbolRef, name, name);
def.references.push(sym);
if (!value && in_loop) value = make_node(AST_Undefined, self);
if (value) expressions.unshift(make_node(AST_Assign, self, {
operator: "=",
left: sym,