JoBoEVD/UglifyJS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix corner case in if_return (#4851)

Browse Source 
fixes #4848
This commit is contained in:
Alex Lam S.L
2021-04-08 01:57:59 +01:00
committed by GitHub
parent ebe4e1ad28
commit 8a82822654
5 changed files with 153 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib/scope.js
View File

@@ -273,16 +273,18 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options) {
return true;
}
if (node instanceof AST_SymbolDeclaration) {
var def = node.definition();
def.preinit = def.references.length;
if (node instanceof AST_SymbolCatch) {
// ensure mangling works if `catch` reuses a scope variable
var def = node.definition().redefined();
if (def) for (var s = node.scope; s; s = s.parent_scope) {
push_uniq(s.enclosed, def);
if (s === def.scope) break;
var redef = def.redefined();
if (redef) for (var s = node.scope; s; s = s.parent_scope) {
push_uniq(s.enclosed, redef);
if (s === redef.scope) break;
}
} else if (node instanceof AST_SymbolConst) {
// ensure compression works if `const` reuses a scope variable
var redef = node.definition().redefined();
var redef = def.redefined();
if (redef) redef.const_redefs = true;
}
if (node.name != "arguments") return true;