https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84300
Bug ID: 84300
Summary: ICE in dwarf2cfi on ppc64le with -fsplit-stack
-fno-omit-frame-pointer
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: ian at airs dot com
Target Milestone: ---
With a cross-compiler from x86_64-pc-linux-gnu to powerpc64le-unknown-linux-gnu
compiling this file with -g -O2 -fsplit-stack -fno-omit-frame-pointer crashes.
void trap () { __builtin_trap (); }
during RTL pass: dwarf2
/usr/local/google/home/iant/foo.c: In function 'trap':
/usr/local/google/home/iant/foo.c:1:1: internal compiler error: in
maybe_record_trace_start, at dwarf2cfi.c:2348
void trap () { __builtin_trap (); }
^~~~
0x791f8d maybe_record_trace_start
/tmp/go-build-release/gccgo-srcdir/gcc/dwarf2cfi.c:2348
0x792524 scan_trace
/tmp/go-build-release/gccgo-srcdir/gcc/dwarf2cfi.c:2541
0x7934a7 create_cfi_notes
/tmp/go-build-release/gccgo-srcdir/gcc/dwarf2cfi.c:2689
0x7934a7 execute_dwarf2_frame
/tmp/go-build-release/gccgo-srcdir/gcc/dwarf2cfi.c:3057
0x7934a7 execute
/tmp/go-build-release/gccgo-srcdir/gcc/dwarf2cfi.c:3545
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://go.ext.google.com/go/> for instructions.
The 312r.dwarf2 file shows:
;; Function runtime.Breakpoint (runtime.Breakpoint, funcdef_no=1318,
decl_uid=22
712, cgraph_uid=829, symbol_order=13584)
Creating trace 0 : start at note 1
Creating trace 1 : start at code_label 25
Creating trace 2 : start at code_label 39
Creating trace 3 : start at note 29
Processing trace 0 : start at note 1
saw edge from trace 0 to 2 (via jump_insn 18)
push trace 2 to worklist
saw edge from trace 0 to 1 (via fallthru 0)
push trace 1 to worklist
Processing trace 1 : start at code_label 25
Processing trace 2 : start at code_label 39
saw edge from trace 2 to 3 (via fallthru 0)
push trace 3 to worklist
Processing trace 3 : start at note 29
saw edge from trace 3 to 1 (via jump_insn 40)
Inconsistent CFI state!
SHOULD have:
.cfi_def_cfa 1, 0
DO have:
.cfi_def_cfa 1, 0
.cfi_offset 65, 16
