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Implement check_attribute to forbid #[allow_internal_unsafe] #57467

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Merged
bors merged 10 commits into from
Jan 15, 2019
Merged

Implement check_attribute to forbid #[allow_internal_unsafe] #57467

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6a90f14
Add check_attribute
JohnTitor Jan 9, 2019
3cf3ed7
Separate the description on different lines
JohnTitor Jan 9, 2019
ea5197c
Add PartialEq
JohnTitor Jan 14, 2019
f18ae26
Run lint for unsafe on the ast
JohnTitor Jan 14, 2019
60a68be
Make UnsafeCode EarlyLintPass
JohnTitor Jan 14, 2019
efd111e
Add test
JohnTitor Jan 14, 2019
a7623e7
Add error check
JohnTitor Jan 14, 2019
d04f756
Restore error message
JohnTitor Jan 15, 2019
b39e9e2
Change from _ to None
JohnTitor Jan 15, 2019
bd1551e
Fix tests
JohnTitor Jan 15, 2019
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6 changes: 6 additions & 0 deletions src/librustc_lint/builtin.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -227,6 +227,12 @@ impl UnsafeCode {
}

impl<'a, 'tcx> LateLintPass<'a, 'tcx> for UnsafeCode {
fn check_attribute(&mut self, cx: &LateContext, attr: &ast::Attribute) {
if attr.check_name("allow_internal_unsafe") {
self.report_unsafe(cx, attr.span, "`allow_internal_unsafe` allows defining macros using unsafe without triggering the `unsafe_code` lint at their call site");
}
}

fn check_expr(&mut self, cx: &LateContext, e: &hir::Expr) {
if let hir::ExprKind::Block(ref blk, _) = e.node {
// Don't warn about generated blocks, that'll just pollute the output.
Expand Down