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Handle leading colons properly

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This commit is contained in:
asquared31415 2021-07-21 18:01:05 -04:00
parent 6f45f62ded
commit 8e7bbc9e9d
3 changed files with 46 additions and 33 deletions
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3
compiler/rustc_builtin_macros/src/asm.rs
View file

@ -511,6 +511,9 @@ fn expand_preparsed_asm(
// If we encounter a non-label, there cannot be any further labels, so stop checking
break;
}
} else {
// Empty string means a leading ':' in this section, which is not a label
break;
}
start_idx = idx + 1;

10
src/test/ui/asm/named_asm_labels.rs
View file

@ -1,5 +1,10 @@
// only-x86_64
#![feature(asm, global_asm)]
#[no_mangle]
pub static FOO: usize = 42;
fn main() {
unsafe {
// Basic usage
@ -104,6 +109,11 @@ fn main() {
"
);
//~^^^^ ERROR do not use named labels
// Tests usage of colons in non-label positions
asm!(":lo12:FOO"); // this is apparently valid aarch64
// is there an example that is valid x86 for this test?
asm!(":bbb nop");
}
}

66
src/test/ui/asm/named_asm_labels.stderr
View file

@ -1,5 +1,5 @@
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:6:15
--> $DIR/named_asm_labels.rs:11:15
|
LL | asm!("bar: nop");
| ^^^
@ -9,7 +9,7 @@ LL | asm!("bar: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:9:15
--> $DIR/named_asm_labels.rs:14:15
|
LL | asm!("abcd:");
| ^^^^
@ -18,7 +18,7 @@ LL | asm!("abcd:");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:12:15
--> $DIR/named_asm_labels.rs:17:15
|
LL | asm!("foo: bar1: nop");
| ^^^
@ -27,7 +27,7 @@ LL | asm!("foo: bar1: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:12:20
--> $DIR/named_asm_labels.rs:17:20
|
LL | asm!("foo: bar1: nop");
| ^^^^
@ -36,7 +36,7 @@ LL | asm!("foo: bar1: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:17:15
--> $DIR/named_asm_labels.rs:22:15
|
LL | asm!("foo1: nop", "nop");
| ^^^^
@ -45,7 +45,7 @@ LL | asm!("foo1: nop", "nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:18:15
--> $DIR/named_asm_labels.rs:23:15
|
LL | asm!("foo2: foo3: nop", "nop");
| ^^^^
@ -54,7 +54,7 @@ LL | asm!("foo2: foo3: nop", "nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:18:21
--> $DIR/named_asm_labels.rs:23:21
|
LL | asm!("foo2: foo3: nop", "nop");
| ^^^^
@ -63,7 +63,7 @@ LL | asm!("foo2: foo3: nop", "nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:21:22
--> $DIR/named_asm_labels.rs:26:22
|
LL | asm!("nop", "foo4: nop");
| ^^^^
@ -72,7 +72,7 @@ LL | asm!("nop", "foo4: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:22:15
--> $DIR/named_asm_labels.rs:27:15
|
LL | asm!("foo5: nop", "foo6: nop");
| ^^^^
@ -81,7 +81,7 @@ LL | asm!("foo5: nop", "foo6: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:22:28
--> $DIR/named_asm_labels.rs:27:28
|
LL | asm!("foo5: nop", "foo6: nop");
| ^^^^
@ -90,7 +90,7 @@ LL | asm!("foo5: nop", "foo6: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:27:15
--> $DIR/named_asm_labels.rs:32:15
|
LL | asm!("foo7: nop; foo8: nop");
| ^^^^
@ -99,7 +99,7 @@ LL | asm!("foo7: nop; foo8: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:27:26
--> $DIR/named_asm_labels.rs:32:26
|
LL | asm!("foo7: nop; foo8: nop");
| ^^^^
@ -108,7 +108,7 @@ LL | asm!("foo7: nop; foo8: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:30:15
--> $DIR/named_asm_labels.rs:35:15
|
LL | asm!("foo9: nop; nop");
| ^^^^
@ -117,7 +117,7 @@ LL | asm!("foo9: nop; nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:31:20
--> $DIR/named_asm_labels.rs:36:20
|
LL | asm!("nop; foo10: nop");
| ^^^^^
@ -126,7 +126,7 @@ LL | asm!("nop; foo10: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:34:15
--> $DIR/named_asm_labels.rs:39:15
|
LL | asm!("bar2: nop\n bar3: nop");
| ^^^^
@ -135,7 +135,7 @@ LL | asm!("bar2: nop\n bar3: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:34:27
--> $DIR/named_asm_labels.rs:39:27
|
LL | asm!("bar2: nop\n bar3: nop");
| ^^^^
@ -144,7 +144,7 @@ LL | asm!("bar2: nop\n bar3: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:37:15
--> $DIR/named_asm_labels.rs:42:15
|
LL | asm!("bar4: nop\n nop");
| ^^^^
@ -153,7 +153,7 @@ LL | asm!("bar4: nop\n nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:38:21
--> $DIR/named_asm_labels.rs:43:21
|
LL | asm!("nop\n bar5: nop");
| ^^^^
@ -162,7 +162,7 @@ LL | asm!("nop\n bar5: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:39:21
--> $DIR/named_asm_labels.rs:44:21
|
LL | asm!("nop\n bar6: bar7: nop");
| ^^^^
@ -171,7 +171,7 @@ LL | asm!("nop\n bar6: bar7: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:39:27
--> $DIR/named_asm_labels.rs:44:27
|
LL | asm!("nop\n bar6: bar7: nop");
| ^^^^
@ -180,7 +180,7 @@ LL | asm!("nop\n bar6: bar7: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:46:13
--> $DIR/named_asm_labels.rs:51:13
|
LL | blah2: nop
| ^^^^^
@ -189,7 +189,7 @@ LL | blah2: nop
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:47:13
--> $DIR/named_asm_labels.rs:52:13
|
LL | blah3: nop
| ^^^^^
@ -198,7 +198,7 @@ LL | blah3: nop
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:55:19
--> $DIR/named_asm_labels.rs:60:19
|
LL | nop ; blah4: nop
| ^^^^^
@ -207,7 +207,7 @@ LL | nop ; blah4: nop
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:69:15
--> $DIR/named_asm_labels.rs:74:15
|
LL | asm!("blah1: 2bar: nop");
| ^^^^^
@ -216,7 +216,7 @@ LL | asm!("blah1: 2bar: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:72:15
--> $DIR/named_asm_labels.rs:77:15
|
LL | asm!("def: def: nop");
| ^^^
@ -225,7 +225,7 @@ LL | asm!("def: def: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:73:15
--> $DIR/named_asm_labels.rs:78:15
|
LL | asm!("def: nop\ndef: nop");
| ^^^
@ -234,7 +234,7 @@ LL | asm!("def: nop\ndef: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:74:15
--> $DIR/named_asm_labels.rs:79:15
|
LL | asm!("def: nop; def: nop");
| ^^^
@ -243,7 +243,7 @@ LL | asm!("def: nop; def: nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:82:15
--> $DIR/named_asm_labels.rs:87:15
|
LL | asm!("fooo\u{003A} nop");
| ^^^^^^^^^^^^^^^^
@ -252,7 +252,7 @@ LL | asm!("fooo\u{003A} nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:83:15
--> $DIR/named_asm_labels.rs:88:15
|
LL | asm!("foooo\x3A nop");
| ^^^^^^^^^^^^^
@ -261,7 +261,7 @@ LL | asm!("foooo\x3A nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:86:15
--> $DIR/named_asm_labels.rs:91:15
|
LL | asm!("fooooo:\u{000A} nop");
| ^^^^^^
@ -270,7 +270,7 @@ LL | asm!("fooooo:\u{000A} nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:87:15
--> $DIR/named_asm_labels.rs:92:15
|
LL | asm!("foooooo:\x0A nop");
| ^^^^^^^
@ -279,7 +279,7 @@ LL | asm!("foooooo:\x0A nop");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:91:14
--> $DIR/named_asm_labels.rs:96:14
|
LL | asm!("\x41\x42\x43\x3A\x20\x6E\x6F\x70");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -288,7 +288,7 @@ LL | asm!("\x41\x42\x43\x3A\x20\x6E\x6F\x70");
= note: See the asm section of the unstable book <https://doc.rust-lang.org/nightly/unstable-book/library-features/asm.html#labels> for more information
error: do not use named labels in inline assembly
--> $DIR/named_asm_labels.rs:102:13
--> $DIR/named_asm_labels.rs:107:13
|
LL | ab: nop // ab: does foo
| ^^