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Only export #[no_mangle] extern symbols during LTO

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Previously, all extern symbols were exported even when performing LTO.
Now, we only export symbols that are also marked #[no_mangle].

Fixes #34985
This commit is contained in:
Wesley Wiser 2016-07-25 21:44:57 -04:00
parent 422ebd5328
commit 2dbf00e2bb
1 changed files with 2 additions and 7 deletions
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9
src/librustc_metadata/decoder.rs
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@ -55,7 +55,6 @@ use rustc_serialize::Decodable;
use syntax::attr;
use syntax::parse::token;
use syntax::ast;
use syntax::abi::Abi;
use syntax::codemap;
use syntax::print::pprust;
use syntax::ptr::P;
@ -1542,13 +1541,9 @@ pub fn is_extern_item<'a, 'tcx>(cdata: Cmd,
let applicable = match item_family(item_doc) {
ImmStatic | MutStatic => true,
Fn => {
let ty::TypeScheme { generics, ty } = get_type(cdata, id, tcx);
let ty::TypeScheme { generics, .. } = get_type(cdata, id, tcx);
let no_generics = generics.types.is_empty();
match ty.sty {
ty::TyFnDef(_, _, fn_ty) | ty::TyFnPtr(fn_ty)
if fn_ty.abi != Abi::Rust => return no_generics,
_ => no_generics,
}
no_generics
},
_ => false,
};