https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96233
Bug ID: 96233
Summary: XGCC-10.1.0 for Target RX: internal compiler error: in
dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1189
Product: gcc
Version: 10.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hdu...@tangerine-soft.de
Target Milestone: ---
Created attachment 48888
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48888&action=edit
Code snippet that causes the error
ICE happened in a trivial c-source code with main() entry (see attachment)
I got following errors.
$ gcc-10.1.0-rx-none-elf/bin/rx-none-elf-gcc -g -o main.o -c ./main.c
during RTL pass: dwarf2
./main.c: In function 'int main(int, char**)':
./main.c:6:1: internal compiler error: in dwarf2out_frame_debug_adjust_cfa, at
dwarf2cfi.c:1189
6 | }
| ^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
However either one of the followings works fine:
$ gcc-10.1.0-rx-none-elf/bin/rx-none-elf-gcc -g0 -o main.o -c ./main.c
$ gcc-10.1.0-rx-none-elf/bin/rx-none-elf-gcc -g -O1 -o main.o -c ./main.c
$ gcc-10.1.0-rx-none-elf/bin/rx-none-elf-gcc -g -O2 -o main.o -c ./main.c
$ gcc-10.1.0-rx-none-elf/bin/rx-none-elf-gcc -g -O3 -o main.o -c ./main.c
----------------------------------------------------------------------
I have learned that this error even happens with the rx cross compiler for GCC
9.2.0:
----------------------------------------------------------------------
$ gcc-9.2.0-rx-none-elf/bin/rx-none-elf-gcc -g -o main.o -c ./main.c
during RTL pass: dwarf2
./main.c: In function 'int main(int, char**)':
./main.c:6:1: internal compiler error: in dwarf2out_frame_debug_adjust_cfa, at
dwarf2cfi.c:1183
6 | }
| ^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
----------------------------------------------------------------------
...and for an GCC rx cross compiler for GCC 8.2.0 as well:
----------------------------------------------------------------------
$ gcc-8.2.0-rx-none-elf/bin/rx-none-elf-gcc -g -o main.o -c ./main.c
during RTL pass: dwarf2
./main.c: In function 'int main(int, char**)':
./main.c:6:1: internal compiler error: in dwarf2out_frame_debug_adjust_cfa, at
dwarf2cfi.c:1171
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
If I hand over -g0 instead of -g or if I use an Optimization flag with an level
of greater than 0 than the ICE does not happen any longer (verfied for
rx-none-elf-gcc-10.1, rx-none-elf-gcc-9.2 and rx-none-elf-gcc-8.2.
