#7684: cgrun071 segfaults ----------------------------------+---------------------------------- Reporter: tibbe | Owner: leroux Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Difficulty: Unknown Test Case: cgrun071 | Blocked By: Blocking: | Related Tickets: ----------------------------------+---------------------------------- Comment (by leroux): attachment:cgrun071-rts-asm-diffs.txt Both cgrun071 binaries are built, dumped, and diff'd as follows. {{{ $ ghc-stage2 -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output -no- user-package-db -rtsopts -ddump-to-file -ddump-asm -fno-ghci-history -o cgrun071 cgrun071.hs -O -fasm # TEST=cgrun071 WAY=normal EXTRA_HC_OPTS ="-ddump-to-file -ddump-asm" $ tool -tV cgrun071 > cgrun071.S # dump the object code }}} And then simply {{{ $ diff -y cgrun071-gcc48-passed.S cgrun071-gcc42-failed.S }}} The left side of the diff is from ghc (built with gcc48, passed) and the right is built with gcc42 (failed, segfault). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7684#comment:25 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler