#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