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Reject may_unwind option in naked functions

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This commit is contained in:
Tomasz Miąsko 2022-01-21 00:00:00 +00:00
parent 888332fee4
commit beeba4bcea
3 changed files with 23 additions and 10 deletions
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1
compiler/rustc_passes/src/naked_functions.rs
View file

@ -251,6 +251,7 @@ impl<'tcx> CheckInlineAssembly<'tcx> {
}
let unsupported_options: Vec<&'static str> = [
(InlineAsmOptions::MAY_UNWIND, "`may_unwind`"),
(InlineAsmOptions::NOMEM, "`nomem`"),
(InlineAsmOptions::NOSTACK, "`nostack`"),
(InlineAsmOptions::PRESERVES_FLAGS, "`preserves_flags`"),

8
src/test/ui/asm/naked-functions.rs
View file

@ -5,7 +5,7 @@
#![feature(naked_functions)]
#![feature(or_patterns)]
#![feature(asm_const, asm_sym)]
#![feature(asm_const, asm_sym, asm_unwind)]
#![crate_type = "lib"]
use std::arch::asm;
@ -114,6 +114,12 @@ unsafe extern "C" fn invalid_options_continued() {
//~| ERROR asm in naked functions must use `noreturn` option
}
#[naked]
unsafe extern "C" fn invalid_may_unwind() {
asm!("", options(noreturn, may_unwind));
//~^ ERROR asm options unsupported in naked functions: `may_unwind`
}
#[naked]
pub unsafe fn default_abi() {
//~^ WARN Rust ABI is unsupported in naked functions

24
src/test/ui/asm/naked-functions.stderr
View file

@ -199,8 +199,14 @@ error[E0787]: asm in naked functions must use `noreturn` option
LL | asm!("", options(readonly, nostack), options(pure));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0787]: asm options unsupported in naked functions: `may_unwind`
--> $DIR/naked-functions.rs:119:5
|
LL | asm!("", options(noreturn, may_unwind));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
warning: Rust ABI is unsupported in naked functions
--> $DIR/naked-functions.rs:118:15
--> $DIR/naked-functions.rs:124:15
|
LL | pub unsafe fn default_abi() {
| ^^^^^^^^^^^
@ -208,47 +214,47 @@ LL | pub unsafe fn default_abi() {
= note: `#[warn(undefined_naked_function_abi)]` on by default
warning: Rust ABI is unsupported in naked functions
--> $DIR/naked-functions.rs:124:15
--> $DIR/naked-functions.rs:130:15
|
LL | pub unsafe fn rust_abi() {
| ^^^^^^^^
error: naked functions cannot be inlined
--> $DIR/naked-functions.rs:164:1
--> $DIR/naked-functions.rs:170:1
|
LL | #[inline]
| ^^^^^^^^^
error: naked functions cannot be inlined
--> $DIR/naked-functions.rs:171:1
--> $DIR/naked-functions.rs:177:1
|
LL | #[inline(always)]
| ^^^^^^^^^^^^^^^^^
error: naked functions cannot be inlined
--> $DIR/naked-functions.rs:178:1
--> $DIR/naked-functions.rs:184:1
|
LL | #[inline(never)]
| ^^^^^^^^^^^^^^^^
error: naked functions cannot be inlined
--> $DIR/naked-functions.rs:185:1
--> $DIR/naked-functions.rs:191:1
|
LL | #[inline]
| ^^^^^^^^^
error: naked functions cannot be inlined
--> $DIR/naked-functions.rs:187:1
--> $DIR/naked-functions.rs:193:1
|
LL | #[inline(always)]
| ^^^^^^^^^^^^^^^^^
error: naked functions cannot be inlined
--> $DIR/naked-functions.rs:189:1
--> $DIR/naked-functions.rs:195:1
|
LL | #[inline(never)]
| ^^^^^^^^^^^^^^^^
error: aborting due to 29 previous errors; 2 warnings emitted
error: aborting due to 30 previous errors; 2 warnings emitted
For more information about this error, try `rustc --explain E0787`.