ibc++abi.dylib: terminating with uncaught exception of type int

[dgh05t]

Hi,
when I fuzzing MacOS program, It constant show some log like below:

...
ibc++abi.dylib: terminating with uncaught exception of type int
Exception at address 0x7fff69bba33a
...

which makes fuzzing speed very low.
and it keeps crash( only 1 unique ), and crash file name is like flaky_... which means TryReproduceCrash failed. I try to reproduce it manually and it doesn't crash either.
Where's my problem? Thank you!

[ifratric]

In general, this type of error can be resolved by passing -patch_return_addresses flag. For more details, see https://github.com/googleprojectzero/TinyInst#return-address-patching

[ifratric]

Now also with -generate_unwind, which is more performant than -patch_return_addresses.