Currently the `CallerCc1`, `CallerCc2`, and `CallerCc3` tests fail with an assertion when run in the `ghci-ext-prof` way when `iserv` is built with the `-debug` RTS: ``` $ _build/stage1/bin/ghc --interactive -prof -fexternal-interpreter testsuite/tests/profiling/should_run/caller-cc/Main.hs GHCi, version 9.3.20220307: https://www.haskell.org/ghc/ :? for help ghc-iserv-prof: internal error: ASSERTION FAILED: file rts/CheckUnload.c, line 345 Stack trace: 0x2213934 set_initial_registers (rts/Libdw.c:294.57) 0x7ff706298b08 dwfl_thread_getframes (/nix/store/z5mr2iqwvh8lpngrnxnqdvxw1dpw7ap7-elfutils-0.186/lib/libdw-0.186.so) 0x7ff70629863b get_one_thread_cb (/nix/store/z5mr2iqwvh8lpngrnxnqdvxw1dpw7ap7-elfutils-0.186/lib/libdw-0.186.so) 0x7ff706298972 dwfl_getthreads (/nix/store/z5mr2iqwvh8lpngrnxnqdvxw1dpw7ap7-elfutils-0.186/lib/libdw-0.186.so) 0x7ff706298eb7 dwfl_getthread_frames (/nix/store/z5mr2iqwvh8lpngrnxnqdvxw1dpw7ap7-elfutils-0.186/lib/libdw-0.186.so) 0x221381e libdwGetBacktrace (rts/Libdw.c:263.15) 0x21bfc92 rtsFatalInternalErrorFn (rts/RtsMessages.c:175.30) 0x21bf851 barf (rts/RtsMessages.c:49.4) 0x21bf8b4 errorBelch (rts/RtsMessages.c:68.5) 0x220fcbd findSectionIdx (rts/CheckUnload.c:347.5) 0x220fdfa findOC (rts/CheckUnload.c:373.74) 0x220ffbc markObjectCode (rts/CheckUnload.c:430.5) 0x21e3cd9 markCAFs (rts/sm/GCAux.c:156.9) 0x21e0ab4 GarbageCollect (rts/sm/GC.c:522.3) 0x21c5ce7 scheduleDoGC (rts/Schedule.c:1861.5) 0x21c5238 schedule (rts/Schedule.c:215.7) 0x21c672c scheduleWaitThread (rts/Schedule.c:2627.5) 0x221849f rts_evalLazyIO (rts/RtsAPI.c:567.5) 0x21bf6fd hs_main (rts/RtsMain.c:73.9) 0xbb1583 (null) (/home/ben/ghc/ghc-compare-1/_build/stage1/lib/bin/ghc-iserv-prof) 0x7ff706318790 __libc_start_main (/nix/store/4s21k8k7p1mfik0b33r2spq5hq7774k1-glibc-2.33-108/lib/libc-2.33.so) 0xbb30ba _start (../sysdeps/x86_64/start.S:122.0) (GHC version 9.3.20220307 for x86_64_unknown_linux) Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug ghc: ghc-iserv terminated (-6) ```