#10863: "hello world" produces illegal instruction error ----------------------------------+--------------------------------- Reporter: Ansible | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.2 Resolution: | Keywords: Operating System: Linux | Architecture: arm Type of failure: Runtime crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: ----------------------------------+--------------------------------- Comment (by Ansible): Ok here you go. I build it like so:
ghc hello.hs -debug
And the gdb output: `(gdb) run Starting program: /home/bburdette/code/ghcbug/hello [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/arm-linux- gnueabihf/libthread_db.so.1". Program received signal SIGILL, Illegal instruction. 0x0000abc0 in main () (gdb) bt #0 0x0000abc0 in main () (gdb) disas Dump of assembler code for function main: 0x0000abb0 <+0>: push {r4, r7, lr} 0x0000abb2 <+2>: sub sp, #36 ; 0x24 0x0000abb4 <+4>: add r7, sp, #8 0x0000abb6 <+6>: str r0, [r7, #4] 0x0000abb8 <+8>: str r1, [r7, #0] 0x0000abba <+10>: movw r3, #57520 ; 0xe0b0 0x0000abbe <+14>: movt r3, #61 ; 0x3d 0x0000abc2 <+18>: add.w r4, r7, #12 0x0000abc6 <+22>: ldmia.w r3, {r0, r1, r2} 0x0000abca <+26>: stmia.w r4, {r0, r1, r2} 0x0000abce <+30>: movs r3, #1 0x0000abd0 <+32>: str r3, [r7, #12] 0x0000abd2 <+34>: movs r3, #1 0x0000abd4 <+36>: str r3, [r7, #20] 0x0000abd6 <+38>: mov r2, sp 0x0000abd8 <+40>: add.w r3, r7, #16 0x0000abdc <+44>: ldmia.w r3, {r0, r1} 0x0000abe0 <+48>: stmia.w r2, {r0, r1} 0x0000abe4 <+52>: ldr r3, [r7, #12] 0x0000abe6 <+54>: ldr r0, [r7, #4] 0x0000abe8 <+56>: ldr r1, [r7, #0] 0x0000abea <+58>: movw r2, #45368 ; 0xb138 0x0000abee <+62>: movt r2, #62 ; 0x3e 0x0000abf2 <+66>: bl 0x38f26c <hs_main> End of assembler dump. (gdb) info reg r0 0x1624b0 1451184 r1 0x76cff004 1993338884 r2 0x3eb138 4108600 r3 0x76c03400 1992307712 r4 0x40c590 4244880 r5 0x76c033a0 1992307616 r6 0x76c01ffc 1992302588 r7 0x3f68a0 4155552 r8 0x3eb128 4108584 r9 0x0 0 r10 0x76fff000 1996484608 r11 0x76c03064 1992306788 r12 0x76df08f1 1994328305 sp 0x7effd4a0 0x7effd4a0 lr 0x39c119 3784985 pc 0xabc0 0xabc0 <main+16> cpsr 0x20010010 536936464 (gdb) ` -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10863#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler