[GHC] #9303: O2: (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s1Mp
#9303: O2: (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s1Mp ----------------------------------+--------------------------------------- Reporter: slyfox | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (NCG) | Version: 7.8.3 Keywords: | Operating System: Unknown/Multiple Architecture: x86_64 (amd64) | Type of failure: Compile-time crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------------+--------------------------------------- {{{ ghc --make -O2 M.hs [1 of 1] Compiling M ( M.hs, M.o ) ghc: panic! (the 'impossible' happened) (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s1Mp Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} As in #9155 bug was caught on '''wx''' package in the same module. I didn't try to trim it down to minimal sample. No external modules required. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9303 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#9303: O2: (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s1Mp ---------------------------------------+---------------------------------- Reporter: slyfox | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (NCG) | Version: 7.8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: x86_64 (amd64) Type of failure: Compile-time crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ---------------------------------------+---------------------------------- Comment (by slyfox): The same for -HEAD: {{{ (GHC version 7.9.20140710 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s12v }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9303#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#9303: O2: (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s1Mp ---------------------------------------+---------------------------------- Reporter: slyfox | Owner: simonmar Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (NCG) | Version: 7.8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: x86_64 (amd64) Type of failure: Compile-time crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ---------------------------------------+---------------------------------- Changes (by simonpj): * owner: => simonmar Comment: This looks like #9155 again, but Simon M fixed it, and the fix was merged. Simon M will look again. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9303#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#9303: O2: (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s1Mp ---------------------------------------+---------------------------------- Reporter: slyfox | Owner: simonmar Type: bug | Status: new Priority: highest | Milestone: 7.8.4 Component: Compiler (NCG) | Version: 7.8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: x86_64 (amd64) Type of failure: Compile-time crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ---------------------------------------+---------------------------------- Changes (by simonmar): * priority: normal => highest * milestone: => 7.8.4 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9303#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#9303: O2: (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s1Mp -------------------------------------+------------------------------------- Reporter: slyfox | Owner: simonmar Type: bug | Status: new Priority: highest | Milestone: 7.8.4 Component: Compiler | Version: 7.8.3 (NCG) | Keywords: Resolution: | Operating System: Unknown/Multiple Differential Revisions: | Type of failure: Compile-time Architecture: x86_64 | crash (amd64) | Test Case: Difficulty: Unknown | Blocking: Blocked By: | Related Tickets: | -------------------------------------+------------------------------------- Comment (by slyfox): Managed to squeeze M-mini into even shorter example: {{{ -- a.hs module M (f) where f :: Int -> Int f i = go [ 1, 0 ] where go :: [Int] -> Int go [] = undefined go [1] = undefined go (x:xs) | x == i = 2 | otherwise = go xs }}} profiled -HEAD can even show stack trace: {{{ [sf] /tmp:~/dev/git/ghc/inplace/bin/ghc-stage2 --make -O2 a.hs [1 of 1] Compiling M ( a.hs, a.o ) ghc-stage2: panic! (the 'impossible' happened) (GHC version 7.9.20140712 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_sNc Stack trace: AsmCodeGen.RegAlloc (compiler/nativeGen/AsmCodeGen.lhs:(521,27)-(523,55)) AsmCodeGen.cmmNativeGen (compiler/nativeGen/AsmCodeGen.lhs:379:47-95) CodeOutput.NativeCodeGen (compiler/main/CodeOutput.lhs:153:18-69) CodeOutput.OutputAsm (compiler/main/CodeOutput.lhs:(151,37)-(153,69)) HscMain.codeOutput (compiler/main/HscMain.hs:(1180,16)-(1181,50)) GhcMake.upsweep_mod.compile_it (compiler/main/GhcMake.hs:(1186,13)-(1188,66)) GhcMake.upsweep_mod (compiler/main/GhcMake.hs:(1135,1)-(1280,49)) GhcMake.upsweep.upsweep' (compiler/main/GhcMake.hs:(1068,3)-(1124,64)) GhcMake.upsweep (compiler/main/GhcMake.hs:(1063,1)-(1124,64)) GhcMake.load (compiler/main/GhcMake.hs:(150,1)-(369,38)) GHC.defaultCleanupHandler (compiler/main/GHC.hs:(384,1)-(390,11)) GHC.runGhc (compiler/main/GHC.hs:(414,1)-(419,7)) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9303#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#9303: O2: (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill:
Cannot read from uninitialized register %vI_s1Mp
-------------------------------------+-------------------------------------
Reporter: slyfox | Owner: simonmar
Type: bug | Status: new
Priority: highest | Milestone: 7.8.4
Component: Compiler | Version: 7.8.3
(NCG) | Keywords:
Resolution: | Architecture: x86_64 (amd64)
Operating System: | Difficulty: Unknown
Unknown/Multiple | Blocked By:
Type of failure: Compile- | Related Tickets:
time crash |
Test Case: |
Blocking: |
Differential Revisions: |
-------------------------------------+-------------------------------------
Comment (by Simon Marlow
#9303: O2: (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s1Mp -------------------------------------+------------------------------------- Reporter: slyfox | Owner: simonmar Type: bug | Status: merge Priority: highest | Milestone: 7.8.4 Component: Compiler | Version: 7.8.3 (NCG) | Keywords: Resolution: | Architecture: x86_64 (amd64) Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: Compile- | Related Tickets: time crash | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by simonmar): * status: new => merge -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9303#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#9303: O2: (GHC version 7.8.3 for x86_64-unknown-linux): allocateRegsAndSpill: Cannot read from uninitialized register %vI_s1Mp -------------------------------------+------------------------------------- Reporter: slyfox | Owner: simonmar Type: bug | Status: closed Priority: highest | Milestone: 7.8.4 Component: Compiler | Version: 7.8.3 (NCG) | Keywords: Resolution: fixed | Architecture: x86_64 (amd64) Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: Compile- | Related Tickets: time crash | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thoughtpolice): * status: merge => closed * resolution: => fixed Comment: Merged. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9303#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
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