Credit to @samth on the Discord for noticing that I did not use `_bytes/nul-terminated` on Racket CS byte strings. Doing so fixed the issue. Thanks, Sam!
On 6/2/21 10:21 AM, Sage Gerard wrote: > Hi all, > > Consider this small FFI that currently works only on GNU/Linux. > > https://github.com/zyrolasting/xiden/blob/libcrypto/crypto.rkt > https://github.com/zyrolasting/xiden/blob/libcrypto/crypto/crypto.c > > `raco test` intermittently fails this module with "invalid memory reference. > Some debugging context lost". I can silence the error by commenting out all > use of `valid?` in the tests (starts on line 413), which allows me to blame > one of the verification functions. However, I do not understand the nature of > the problem well enough to know where exactly the problem occurred, or what > to do when I find it. > > My current guess is that I passed a pointer to GC-managed memory, and the > pointer referenced an old location. > > Besides continuing to throw prints around, how should I go about debugging > this? > > -- > ~slg -- ~slg -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/a7754519-5b39-a2bb-2d6a-958dac6eedfe%40sagegerard.com.
