475838 - Extra "goto" bytecode at end of switch

Status: RESOLVED WONTFIX

(Core :: JavaScript Engine, defect)

Description

[Jesse Ruderman]

I found this by using jsfunfuzz to look for functions where dis(f) doesn't match dis(eval(uneval(f))).

js> f = function (x) { switch(x) { default: break; } }
function (x) {
    switch (x) {
    }
}

js> dis(f)
flags: LAMBDA INTERPRETED
main:
00000:  getarg 0
00003:  tableswitch defaultOffset 7 low 0 high -1
00010:  goto 13 (3)
00013:  stop

Source notes:
  0:     3 [   3] switch   length 10

js> dis(eval(uneval(f)))
flags: LAMBDA INTERPRETED
main:
00000:  getarg 0
00003:  tableswitch defaultOffset 7 low 0 high -1
00010:  stop

Source notes:
  0:     3 [   3] switch   length 7

Comment 1

[Luke Wagner [:luke]]

Shouldn't matter with jits.