Changes in src/ResolvExpr/Unify.cc [7ff3e522:ef9988b]
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src/ResolvExpr/Unify.cc
r7ff3e522 ref9988b 791 791 for ( const ast::DeclWithType * d : src ) { 792 792 ast::Pass<TtypeExpander_new> expander{ env }; 793 d = d->accept( expander ); 794 auto types = flatten( d->get_type() ); 793 // TtypeExpander pass is impure (may mutate nodes in place) 794 // need to make nodes shared to prevent accidental mutation 795 ast::ptr<ast::DeclWithType> dc = d; 796 dc = dc->accept( expander ); 797 auto types = flatten( dc->get_type() ); 795 798 for ( ast::ptr< ast::Type > & t : types ) { 796 799 // outermost const, volatile, _Atomic qualifiers in parameters should not play … … 801 804 // requirements than a non-mutex function 802 805 remove_qualifiers( t, ast::CV::Const | ast::CV::Volatile | ast::CV::Atomic ); 803 dst.emplace_back( new ast::ObjectDecl{ d ->location, "", t } );806 dst.emplace_back( new ast::ObjectDecl{ dc->location, "", t } ); 804 807 } 805 808 } … … 1110 1113 1111 1114 ast::Pass<TtypeExpander_new> expander{ tenv }; 1112 const ast::Type * flat = tuple->accept( expander ); 1113 const ast::Type * flat2 = tuple2->accept( expander ); 1115 1116 ast::ptr<ast::TupleType> tuplec = tuple; 1117 ast::ptr<ast::TupleType> tuple2c = tuple2; 1118 const ast::Type * flat = tuplec->accept( expander ); 1119 const ast::Type * flat2 = tuple2c->accept( expander ); 1114 1120 1115 1121 auto types = flatten( flat );
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