157136 2016-04-28 07:03:47 -0700 Byte codes for dot call and bracket call of super are different 2016-04-28 08:31:17 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED DUPLICATE 147064 P2 Normal --- 140491 1 gskachkov webkit-unassigned darin gskachkov keith_miller rniwa saam oldest_to_newest 1188235 0 gskachkov 2016-04-28 07:03:47 -0700 (new class D extends class { m() {}} { constructor() { super(); super['m']() } }()) [ 0] enter [ 1] get_scope loc3 [ 3] mov loc4, loc3 [ 6] mov loc5, this [ 9] mov this, <JSValue()>(const1) [ 12] get_by_id loc6, head3, __proto__(@id0) predicting None [ 21] mov loc8, loc5 [ 24] construct loc6, loc6, 1, 14 status(Could Take Slow Path) predicting None [ 33] is_empty loc9, this [ 36] jtrue loc9, 6(->42) [ 39] throw_static_error String (atomic) (identifier): 'super()' can't be called more than once in a constructor., ID: 4(const2), true [ 42] mov this, loc6 [ 45] get_by_id loc6, head3, PrivateSymbol.homeObject(@id1) predicting None [ 54] get_by_id loc7, loc6, __proto__(@id0) predicting None [ 63] get_by_id loc8, loc7, m(@id2) predicting None [ 72] op_check_tdz this [ 74] mov loc10, this [ 77] call loc8, loc8, 1, 16 status(Could Take Slow Path) Original; predicting None [ 86] op_check_tdz this [ 88] is_object loc6, this [ 91] jtrue loc6, 16(->107) [ 94] is_undefined loc6, this [ 97] jtrue loc6, 6(->103) [ 100] throw_static_error String (atomic) (identifier): Cannot return a non-object type in the constructor of a derived class., ID: 4(const3), false [ 103] op_check_tdz this [ 105] ret this [ 107] ret this (new class D extends class { m() {}} { constructor() { super(); super.m() } }()) [ 0] enter [ 1] get_scope loc3 [ 3] mov loc4, loc3 [ 6] mov loc5, this [ 9] mov this, <JSValue()>(const1) [ 12] get_by_id loc6, head3, __proto__(@id0) predicting None [ 21] mov loc8, loc5 [ 24] construct loc6, loc6, 1, 14 status(Could Take Slow Path) predicting None [ 33] is_empty loc9, this [ 36] jtrue loc9, 6(->42) [ 39] throw_static_error String (atomic) (identifier): 'super()' can't be called more than once in a constructor., ID: 4(const2), true [ 42] mov this, loc6 [ 45] op_check_tdz this [ 47] mov loc8, this [ 50] get_by_id loc9, head3, PrivateSymbol.homeObject(@id1) predicting None [ 59] get_by_id loc10, loc9, __proto__(@id0) predicting None [ 68] get_by_id loc6, loc10, m(@id2) predicting None [ 77] call loc6, loc6, 1, 14 status(Could Take Slow Path) Original; predicting None [ 86] op_check_tdz this [ 88] is_object loc6, this [ 91] jtrue loc6, 16(->107) [ 94] is_undefined loc6, this [ 97] jtrue loc6, 6(->103) [ 100] throw_static_error String (atomic) (identifier): Cannot return a non-object type in the constructor of a derived class., ID: 4(const3), false [ 103] op_check_tdz this [ 105] ret this [ 107] ret this For my prospective it should be the same byte code. lines 45 are diffrent 1188247 1 saam 2016-04-28 08:31:17 -0700 I'm fixing this in: https://bugs.webkit.org/show_bug.cgi?id=147064 *** This bug has been marked as a duplicate of bug 147064 ***