Radare2 bindings - Error { repr: Custom(Custom { kind: Other, error: StringError(\"Cannot find binary path\") }) }

[XVilka]

The file is https://github.com/radare/radare2/blob/master/libr/include/r_core.h This is my creduce predicate script:

CMD="bindgen --verbose /home/user/data/tmp/r_core.h -o /home/user/data/tmp/r2-api/r_core.rs -- -I/usr/local/include/libr"
OUT=$($CMD 3>&1 1>&2 2>&3)
EXPECT="Error { repr: Custom(Custom { kind: Other, error: StringError(\"Cannot find binary path\") }) }"

if [ "$OUT" == "$EXPECT" ]; then
	exit 0
else
	exit 1
fi

Here is the preprocessed file
__bindgen.i.gz

Sadly creduce cannot reduce this test because of the bug in the creduce itself - I sent them a report, they are checking it.

See also #1154

[emilio]

That error comes from the which crate, and should be non-fatal.

[XVilka]

Well, it prevents from the generating the full bindings for this file.

[emilio]

Hmm, it definitely should not.

We write the (unformatted) bindings right after printing the error in:

https://github.com/rust-lang-nursery/rust-bindgen/blob/ac523232d317373aec9c638f6b0451c78f11f892/src/lib.rs#L1693

Does it happen on master? I think you're getting bit by what I fixed in #1112.

[XVilka]

r_core.rs.gz
@emilio aha, now it writes the file, but not sure, it looks bad. Ultralong lines without splitting.

[XVilka]

@emilio aha, seems that which crate returned an error because of missing rustfmt binary. Fixed it with cargo install rustfmt. Imho the error should clarify which binary is exactly missing. Now have a problem inside rustfmt it seems:

Error { repr: Custom(Custom { kind: Other, error: StringError("Internal rustfmt error") }) }

[fschutt]

Ran into this myself. Could you add this to the README or the book, that in order to use the CLI, you need to install rustfmt-nightly (not the regular rustfmt)? A more descriptive error would be appreciated as well. Thanks.

[emilio]

Sorry for missing this one, yeah, this should be added to the docs... I can't do it right now but I'll put it in the queue. PRs welcome if you manage to get to it earlier of course. Sorry!