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fix corner case in evaluate (#3728)

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- augment `ufuzz` for further `RegExp` testing
This commit is contained in:
Alex Lam S.L
2020-02-18 19:35:37 +00:00
committed by GitHub
parent d13b71297e
commit 7052ce5aef
3 changed files with 174 additions and 1 deletions
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5
lib/compress.js
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@@ -315,7 +315,7 @@ merge(Compressor.prototype, {
if (value instanceof AST_Array) return native_fns.Array[name];
if (value instanceof AST_Function) return native_fns.Function[name];
if (value instanceof AST_Object) return native_fns.Object[name];
if (value instanceof AST_RegExp) return native_fns.RegExp[name];
if (value instanceof AST_RegExp) return native_fns.RegExp[name] && !value.value.global;
}
function is_modified(compressor, tw, node, value, level, immutable) {
@@ -3003,6 +3003,7 @@ merge(Compressor.prototype, {
].concat(object_fns),
Object: object_fns,
RegExp: [
"exec",
"test",
].concat(object_fns),
String: [
@@ -3085,6 +3086,7 @@ merge(Compressor.prototype, {
cached.forEach(function(node) {
delete node._eval;
});
if (ignore_side_effects) return val;
if (!val || val instanceof RegExp) return val;
if (typeof val == "function" || typeof val == "object") return this;
return val;
@@ -3400,6 +3402,7 @@ merge(Compressor.prototype, {
if (val == null || val === e) return this;
var native_fn = native_fns[val.constructor.name];
if (!native_fn || !native_fn[key]) return this;
if (val instanceof RegExp && val.global && !(e instanceof AST_RegExp)) return this;
}
var args = eval_args(this.args);
if (!args) return this;