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Point to no_mangle/export_name attribute when linting

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This commit is contained in:
Wim Looman 2020-08-04 13:02:17 +02:00
parent 9ed3661427
commit 7636de33cf
2 changed files with 24 additions and 24 deletions
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16
compiler/rustc_lint/src/builtin.rs
View File

@ -290,34 +290,34 @@ fn check_item(&mut self, cx: &EarlyContext<'_>, it: &ast::Item) {
}
ast::ItemKind::Fn(..) => {
if attr::contains_name(&it.attrs, sym::no_mangle) {
if let Some(attr) = attr::find_by_name(&it.attrs, sym::no_mangle) {
self.report_overriden_symbol_name(
cx,
it.ident.span,
attr.span,
"declaration of a `no_mangle` function",
);
}
if attr::contains_name(&it.attrs, sym::export_name) {
if let Some(attr) = attr::find_by_name(&it.attrs, sym::export_name) {
self.report_overriden_symbol_name(
cx,
it.ident.span,
attr.span,
"declaration of a function with `export_name`",
);
}
}
ast::ItemKind::Static(..) => {
if attr::contains_name(&it.attrs, sym::no_mangle) {
if let Some(attr) = attr::find_by_name(&it.attrs, sym::no_mangle) {
self.report_overriden_symbol_name(
cx,
it.ident.span,
attr.span,
"declaration of a `no_mangle` static",
);
}
if attr::contains_name(&it.attrs, sym::export_name) {
if let Some(attr) = attr::find_by_name(&it.attrs, sym::export_name) {
self.report_overriden_symbol_name(
cx,
it.ident.span,
attr.span,
"declaration of a static with `export_name`",
);
}

32
src/test/ui/lint/lint-unsafe-code.stderr
View File

@ -1,8 +1,8 @@
error: declaration of a `no_mangle` function
--> $DIR/lint-unsafe-code.rs:31:17
--> $DIR/lint-unsafe-code.rs:31:1
|
LL | #[no_mangle] fn foo() {}
| ^^^
| ^^^^^^^^^^^^
|
note: the lint level is defined here
--> $DIR/lint-unsafe-code.rs:3:9
@ -12,26 +12,26 @@ LL | #![deny(unsafe_code)]
= note: the linker's behavior with multiple libraries exporting duplicate symbol names is undefined and Rust cannot provide guarantees when you manually override them
error: declaration of a `no_mangle` static
--> $DIR/lint-unsafe-code.rs:32:21
--> $DIR/lint-unsafe-code.rs:32:1
|
LL | #[no_mangle] static FOO: u32 = 5;
| ^^^
| ^^^^^^^^^^^^
|
= note: the linker's behavior with multiple libraries exporting duplicate symbol names is undefined and Rust cannot provide guarantees when you manually override them
error: declaration of a function with `export_name`
--> $DIR/lint-unsafe-code.rs:34:27
--> $DIR/lint-unsafe-code.rs:34:1
|
LL | #[export_name = "bar"] fn bar() {}
| ^^^
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: the linker's behavior with multiple libraries exporting duplicate symbol names is undefined and Rust cannot provide guarantees when you manually override them
error: declaration of a static with `export_name`
--> $DIR/lint-unsafe-code.rs:35:31
--> $DIR/lint-unsafe-code.rs:35:1
|
LL | #[export_name = "BAR"] static BAR: u32 = 5;
| ^^^
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: the linker's behavior with multiple libraries exporting duplicate symbol names is undefined and Rust cannot provide guarantees when you manually override them
@ -114,10 +114,10 @@ LL | unsafe {}
| ^^^^^^^^^
error: declaration of a `no_mangle` function
--> $DIR/lint-unsafe-code.rs:21:25
--> $DIR/lint-unsafe-code.rs:21:9
|
LL | #[no_mangle] fn foo() {}
| ^^^
| ^^^^^^^^^^^^
...
LL | unsafe_in_macro!()
| ------------------ in this macro invocation
@ -126,10 +126,10 @@ LL | unsafe_in_macro!()
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: declaration of a `no_mangle` static
--> $DIR/lint-unsafe-code.rs:22:29
--> $DIR/lint-unsafe-code.rs:22:9
|
LL | #[no_mangle] static FOO: u32 = 5;
| ^^^
| ^^^^^^^^^^^^
...
LL | unsafe_in_macro!()
| ------------------ in this macro invocation
@ -138,10 +138,10 @@ LL | unsafe_in_macro!()
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: declaration of a function with `export_name`
--> $DIR/lint-unsafe-code.rs:23:35
--> $DIR/lint-unsafe-code.rs:23:9
|
LL | #[export_name = "bar"] fn bar() {}
| ^^^
| ^^^^^^^^^^^^^^^^^^^^^^
...
LL | unsafe_in_macro!()
| ------------------ in this macro invocation
@ -150,10 +150,10 @@ LL | unsafe_in_macro!()
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: declaration of a static with `export_name`
--> $DIR/lint-unsafe-code.rs:25:39
--> $DIR/lint-unsafe-code.rs:25:9
|
LL | #[export_name = "BAR"] static BAR: u32 = 5;
| ^^^
| ^^^^^^^^^^^^^^^^^^^^^^
...
LL | unsafe_in_macro!()
| ------------------ in this macro invocation