#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): Alright, ran the gcc42 version in gdb and got a useful message. =) {{{ Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: 13 at address: 0x0000000000000000 0x000000010027f74b in hs_popcnt8 () (gdb) display/i $pc 1: x/i $pc 0x10027f74b : movzbl (%rdi,%rax,1),%eax }}} {{{ _hs_popcnt8: 000000010027f740 pushq %rbp 000000010027f741 movq %rsp, %rbp 000000010027f744 leaq _popcount_tab(%rip), %rax 000000010027f74b movzbl (%rdi,%rax), %eax <------- 0x10027f74b 000000010027f74f popq %rbp 000000010027f750 ret 000000010027f751 nopl (%rax) 000000010027f758 nopl (%rax,%rax) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7684#comment:26 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler