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authorbors <bors@rust-lang.org>2014-09-12 19:05:53 +0000
committerbors <bors@rust-lang.org>2014-09-12 19:05:53 +0000
commit8780d9c6b5abce83089ca1dafb7efd178569a052 (patch)
tree0ea04c413b3aea1d8477956f19ffb199deb28537 /src/libsyntax
parent9c68679f2ebd5b165694e9346e4ad96a3e32aceb (diff)
parent8e61612889233e7df26067e9d1c0ec7ffbac630c (diff)
downloadrust-8780d9c6b5abce83089ca1dafb7efd178569a052.tar.gz
rust-8780d9c6b5abce83089ca1dafb7efd178569a052.zip
auto merge of #17134 : vberger/rust/lint_unused_extern_crate, r=alexcrichton
This PR creates a new lint : ``unused_extern_crate``, which do pretty much the same thing as ``unused_import``, but for ``extern crate`` statements. It is related to feature request #10385.

I adapted the code tracking used imports so that it tracks extern crates usage as well. This was mainly trial and error and while I believe all cases are covered, there might be some code I added that is useless (long compile times didn't give me the opportunity to check this in detail).

Also, I removed some unused ``extern crate`` statements from the libs, that where spotted by this new lint.
Diffstat (limited to 'src/libsyntax')
-rw-r--r--src/libsyntax/diagnostic.rs2
1 files changed, 0 insertions, 2 deletions
diff --git a/src/libsyntax/diagnostic.rs b/src/libsyntax/diagnostic.rs
index c026a1c97c1..78d3d86b296 100644
--- a/src/libsyntax/diagnostic.rs
+++ b/src/libsyntax/diagnostic.rs
@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern crate libc;
-
 use codemap::{Pos, Span};
 use codemap;
 use diagnostics;