https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93808
Bug ID: 93808
Summary: [9 Regression] [SH] Ruby crashes with 'Illegal
Instruction' when compiled with gcc-9
Product: gcc
Version: 9.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: glaubitz at physik dot fu-berlin.de
CC: gcc-bugzilla at mkarcher dot dialup.fu-berlin.de,
jrtc27 at jrtc27 dot com, kkojima at gcc dot gnu.org,
olegendo at gcc dot gnu.org
Target Milestone: ---
Target: sh*-*-*
When compiling the ruby2.5 package on Debian/sh4 with gcc-9 instead of gcc-8,
the Ruby interpretor crashes with 'Illegal Instruction'.
root@tirpitz:..ruby2.5-ixXW4Q/ruby2.5-2.5.5> ./miniruby
Illegal instruction
root@tirpitz:..ruby2.5-ixXW4Q/ruby2.5-2.5.5>
Printing the assembly with GDB shows that the IP seems to be pointing at data
instead of code(?):
(gdb) x/5i $pc
=> 0x5380c0 <coderange_scan+720>: .word 0x0000
0x5380c2 <coderange_scan+722>: .word 0x0010
0x5380c4 <coderange_scan+724>: mov r14,r2
0x5380c6 <coderange_scan+726>: bra 0x538094 <coderange_scan+676>
0x5380c8 <coderange_scan+728>: add #-16,r2
(gdb)
I have not tested gcc-10 yet. Will do that now.
