[Bug middle-end/26983] [4.0/4.1/4.2 Regression] Missing label in a nested function with builtin_setjmp/longjmp

steven at gcc dot gnu dot org gcc-bugzilla@gcc.gnu.org
Tue Jul 25 22:53:00 GMT 2006



------- Comment #4 from steven at gcc dot gnu dot org  2006-07-25 22:52 -------
In the .104.expand dump we have:

(insn 10 9 11 3 (set (reg/f:SI 63)
        (label_ref:SI 16)) -1 (nil)
    (insn_list:REG_LABEL 16 (nil)))

and

;; Start of basic block 4, registers live: (nil)
(code_label 16 15 52 4 8 "" [1 uses])


But in the .105.sibling dump, we have already lost the label and in fact the
entire basic block 4.  Apparently gcc decides that the block is unreachable...?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26983



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