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https://ghc.haskell.org/trac/ghc/ticket/12136

 https://ghc.haskell.org/trac/ghc/ticket/12136

https://ghc.haskell.org/trac/ghc/ticket/12136 のバグを直した話 @ #hasmoku

B60e45c2f2adbfef9aa2d7c200b27f67?s=128

Daishi Nakajima

March 20, 2017
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Transcript

  1.  4*("#35 PO SJHIUTIJGU PQFSBUJPO BHBJOTU MPOH OFHBUJWF JOUFHFS 

    ()$ IBTNPLV %BJTIJ /BLBKJNB 
  2. ࢲͷ஌ࣝϨϕϧ ▶ গ͠ ()$ ͷίʔυಡΈ࢝Ίͨ ▶ ීஈ͸ $ ͱ͔ॻ͔ͳ͍

  3. *TTVF ▶ 4*("#35 PO SJHIUTIJGU PQFSBUJPO BHBJOTU MPOH OFHBUJWF JOUFHFS

    Y *OUFHFS Y     bTIJGU-b   NBJO  QSJOU  Y bTIJGU3b   1SPHSBN SFDFJWFE TJHOBM 4*("#35 "CPSUFE
  4. "CPVU SJHIU TIJGUJOH OFHBUJWF OVNCFS αϯϓϧ ▶  ▶ 

     ▶   ͷิ਺දݱ ▶ TIJGU3  Λద༻ɺࢉज़γϑτ ▶  r  ▶ TIJGU3  ▶  r 
  5. ූ߸ CJU Λ࢖Θͳ͍৔߹ ▶   ▶ TIJGU3  ਖ਼ͷ਺ͱͯ͠

    ▶   r  ▶ TIJGU3  ▶   r  TIJGUFE PVU ▶ BEE  γϑτΞ΢τ͕ൃੜͨ͠৔߹  Λ଍͢ ▶   r 
  6. 1SPCMFN ▶ (.1 Λ࢖͍ͬͯΔ ▶ (.1@-*.#@#*54 ୯ҐͰ CJU Λ֬อ͍ͯ͠Δ ▶

    (.1@-*.#@#*54 ୯ҐҎ্Ͱ STIJGU ͍ͨ͠͞ʹ੾Γ٧ΊΔ ▶ (.1@-*.#@#*54 ͷഒ਺Ͱӈγϑτ࣌ɺܻ਺੾Γ٧Ί ʮTIJGUFE PVU ࣌ ͷ BEE  Ͱ DBSSZ PVUʯͰ BCPSU
  7. FYBNQMF ▶ (.1@-*.#@#*54   ͱԾఆ ▶  UXPT DPNQMFNFOU

     ▶ TIJGU3  ▶  TIJGUFE PVU ▶  SFEVDF CJUT ▶ BEE  ▶   DBSSZ PVU ▶ BCPSU
  8. 'JY ▶ 'JY UIF SJHIUTIJGU PQFSBUJPO GPS OFHBUJWF CJH JOUFHFST

    pYFT  ▶ ্ه৚݅Ͱ -*.# Λ  ͭଟ֬͘อ