[gnutls-devel] libtasn1 | coding.c: fix undefined behavior with pointer arithmetics (!63)

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Simon Josefsson commented:


Hi.  I am looking at this, but I can't reproduce any ubsan issue here -- can you check with latest version?  I tried on PureOS 10:

```
./configure CC=clang-11 CFLAGS="-O2 -fsanitize=undefined"
```

but all checks pass.  We also do ubsan in CI/CD, but it seems with gcc.

Before changing anything, I'd like to understand what is wrong.

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