https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61664
--- Comment #3 from Alp Sayin <alpsayin at alpsayin dot com> ---
(In reply to Alp Sayin from comment #2)
> This issue still persists. I've hit the exact same problem with gcc-12.1.0
> built from zephyrproject-rtos/gcc fork.
> But more interestingly, I noticed that following code example is able to
> catch the exception.
> Whereas any alteration either causes std:terminator to kick in or it causes
> the unwinder to hang.
>
> int main()
> {
> try
> {
> throw 42;
> }
> // doesnt have to be char type can be any type, but remove this
> catch and it exits (std::terminator goes to _exit())
> catch (char c){}
> catch (int i)
> {
> printf("int catcher\n");
> std::exception_ptr p = std::current_exception();
> printf("Exception Value: 0x%08x/%dd\n", (int)&p, **(int**)&p);
> printf("Exception Type: %s\n", p ?
> p.__cxa_exception_type()->name() :
> "null");
> return;
> }
> catch (...)
> {
> printf("all catcher\n");
> std::exception_ptr p = std::current_exception();
> printf("Exception Value: 0x%08x/%dd\n", (int)&p, **(int**)&p);
> printf("Exception Type: %s\n", p ?
> p.__cxa_exception_type()->name() :
> "null");
> return;
> }
> printf("missed all catch");
> }
Compiler flags as below:
```
microblazeel-zephyr-elf-g++
-gdwarf-4
/home/asayin/zephyr_sdks/microblaze_devel/zephyr-sdk-0.93.0-47-g4470827/microblazeel-zephyr-elf/bin/../lib/gcc/microblazeel-zephyr-elf/12.1.0/bs/m/mh/crtbegin.o
zephyr/CMakeFiles/zephyr_final.dir/misc/empty_file.c.obj
zephyr/CMakeFiles/zephyr_final.dir/dev_handles.c.obj
zephyr/CMakeFiles/zephyr_final.dir/isr_tables.c.obj
-o zephyr/zephyr.elf
zephyr/CMakeFiles/offsets.dir/./arch/microblaze/core/offsets/offsets.c.obj
-fuse-ld=bfd -Wl,-T zephyr/linker.cmd
-Wl,-Map=/scratch/esnap_asayin/twister_out/qemu_microblaze/tests/subsys/cpp/libcxx/cpp.libcxx.newlib/zephyr/zephyr_final.map
-Wl,--whole-archive app/libapp.a zephyr/libzephyr.a
zephyr/arch/common/libarch__common.a
zephyr/arch/arch/microblaze/core/libarch__microblaze__core.a
zephyr/lib/libc/newlib/liblib__libc__newlib.a
zephyr/subsys/testsuite/ztest/libsubsys__testsuite__ztest.a
zephyr/drivers/interrupt_controller/libdrivers__interrupt_controller.a
zephyr/drivers/console/libdrivers__console.a
zephyr/drivers/serial/libdrivers__serial.a
zephyr/drivers/timer/libdrivers__timer.a
-Wl,--no-whole-archive zephyr/kernel/libkernel.a
-L"/home/asayin/zephyr_sdks/microblaze_devel/zephyr-sdk-0.93.0-47-g4470827/microblazeel-zephyr-elf/bin/../lib/gcc/microblazeel-zephyr-elf/12.1.0/bs/m/mh"
-L/scratch/esnap_asayin/twister_out/qemu_microblaze/tests/subsys/cpp/libcxx/cpp.libcxx.newlib/zephyr
-lgcc -Wl,--print-memory-usage zephyr/arch/common/libisr_tables.a
-no-pie -mlittle-endian -Wl,--gc-sections -Wl,--build-id=none
-Wl,--sort-common=descending
-Wl,--sort-section=alignment -Wl,-u,_OffsetAbsSyms -Wl,-u,_ConfigAbsSyms
-nostdlib -static -Wl,-X -Wl,-N -Wl,--orphan-handling=warn -lstdc++
-Wl,--fatal-warnings -lm -Wl,-lc
-L"/home/asayin/zephyr_sdks/microblaze_devel/zephyr-sdk-0.93.0-47-g4470827/microblazeel-zephyr-elf/microblazeel-zephyr-elf"/lib/bs/m/mh
-Wl,
-lgcc
-lc
/home/asayin/zephyr_sdks/microblaze_devel/zephyr-sdk-0.93.0-47-g4470827/microblazeel-zephyr-elf/bin/../lib/gcc/microblazeel-zephyr-elf/12.1.0/bs/m/mh/crtend.o
```
