[gnutls-devel] GnuTLS | ecc_scalar_random in nettle is public but not mangled in GnuTLS (#1016)

[Development of GNU's TLS library]

Steve Lhomme created an issue: https://gitlab.com/gnutls/gnutls/-/issues/1016



The `import-ecc-from-nettle.sh` script mangles internal functions listed in `ecc-internal.h` by patching the original `ecc-internal.h`. But unlike other internal functions listed there, `ecc_scalar_random` is not in there and thus not mangled.

That leads to link errors in GnuTLS 3.16.4 where linking with nettle and gnutls result in a duplicated `nettle_ecc_scalar_random` which is the public name of the file.

Either `ecc-random.c` should not be imported from the nettle source to avoid duplicates (but `ecc_mod_random` from that file is used), or the name used in GnuTLS should be mangled. It can be mangled in `ecc-internal.h` as it's included after `<nettle/ecc.h>` which defines the public name.

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