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Diffstat (limited to 'src/test/ui/asm/named-asm-labels.rs')
| -rw-r--r-- | src/test/ui/asm/named-asm-labels.rs | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/src/test/ui/asm/named-asm-labels.rs b/src/test/ui/asm/named-asm-labels.rs deleted file mode 100644 index 160dbf617..000000000 --- a/src/test/ui/asm/named-asm-labels.rs +++ /dev/null @@ -1,196 +0,0 @@ -// needs-asm-support -// ignore-nvptx64 -// ignore-spirv -// ignore-wasm32 - -// Tests that the use of named labels in the `asm!` macro are linted against -// except for in `#[naked]` fns. -// Using a named label is incorrect as per the RFC because for most cases -// the compiler cannot ensure that inline asm is emitted exactly once per -// codegen unit (except for naked fns) and so the label could be duplicated -// which causes less readable LLVM errors and in the worst cases causes ICEs -// or segfaults based on system dependent behavior and codegen flags. - -#![feature(naked_functions, asm_const)] - -use std::arch::{asm, global_asm}; - -#[no_mangle] -pub static FOO: usize = 42; - -fn main() { - unsafe { - // Basic usage - asm!("bar: nop"); //~ ERROR avoid using named labels - - // No following asm - asm!("abcd:"); //~ ERROR avoid using named labels - - // Multiple labels on one line - asm!("foo: bar1: nop"); - //~^ ERROR avoid using named labels - - // Multiple lines - asm!("foo1: nop", "nop"); //~ ERROR avoid using named labels - asm!("foo2: foo3: nop", "nop"); - //~^ ERROR avoid using named labels - asm!("nop", "foo4: nop"); //~ ERROR avoid using named labels - asm!("foo5: nop", "foo6: nop"); - //~^ ERROR avoid using named labels - //~| ERROR avoid using named labels - - // Statement separator - asm!("foo7: nop; foo8: nop"); - //~^ ERROR avoid using named labels - asm!("foo9: nop; nop"); //~ ERROR avoid using named labels - asm!("nop; foo10: nop"); //~ ERROR avoid using named labels - - // Escaped newline - asm!("bar2: nop\n bar3: nop"); - //~^ ERROR avoid using named labels - asm!("bar4: nop\n nop"); //~ ERROR avoid using named labels - asm!("nop\n bar5: nop"); //~ ERROR avoid using named labels - asm!("nop\n bar6: bar7: nop"); - //~^ ERROR avoid using named labels - - // Raw strings - asm!( - r" - blah2: nop - blah3: nop - " - ); - //~^^^^ ERROR avoid using named labels - - asm!( - r###" - nop - nop ; blah4: nop - "### - ); - //~^^^ ERROR avoid using named labels - - // Non-labels - // should not trigger lint, but may be invalid asm - asm!("ab cd: nop"); - - // `blah:` does not trigger because labels need to be at the start - // of the statement, and there was already a non-label - asm!("1bar: blah: nop"); - - // Only `blah1:` should trigger - asm!("blah1: 2bar: nop"); //~ ERROR avoid using named labels - - // Duplicate labels - asm!("def: def: nop"); //~ ERROR avoid using named labels - asm!("def: nop\ndef: nop"); //~ ERROR avoid using named labels - asm!("def: nop; def: nop"); //~ ERROR avoid using named labels - - // Trying to break parsing - asm!(":"); - asm!("\n:\n"); - asm!("::::"); - - // 0x3A is a ':' - asm!("fooo\u{003A} nop"); //~ ERROR avoid using named labels - asm!("foooo\x3A nop"); //~ ERROR avoid using named labels - - // 0x0A is a newline - asm!("fooooo:\u{000A} nop"); //~ ERROR avoid using named labels - asm!("foooooo:\x0A nop"); //~ ERROR avoid using named labels - - // Intentionally breaking span finding - // equivalent to "ABC: nop" - asm!("\x41\x42\x43\x3A\x20\x6E\x6F\x70"); //~ ERROR avoid using named labels - - // Non-label colons - should pass - asm!("mov rax, qword ptr fs:[0]"); - - // Comments - asm!( - r" - ab: nop // ab: does foo - // cd: nop - " - ); - //~^^^^ ERROR avoid using 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"); - - // Test include_str in asm - asm!(include_str!("named-asm-labels.s")); //~ ERROR avoid using named labels - - // Test allowing or warning on the lint instead - #[allow(named_asm_labels)] - { - asm!("allowed: nop"); // Should not emit anything - } - - #[warn(named_asm_labels)] - { - asm!("warned: nop"); //~ WARNING avoid using named labels - } - } -} - -// Trigger on naked fns too, even though they can't be inlined, reusing a -// label or LTO can cause labels to break -#[naked] -pub extern "C" fn foo() -> i32 { - unsafe { asm!(".Lfoo: mov rax, {}; ret;", "nop", const 1, options(noreturn)) } //~ ERROR avoid using named labels -} - -// Make sure that non-naked attributes *do* still let the lint happen -#[no_mangle] -pub extern "C" fn bar() { - unsafe { asm!(".Lbar: mov rax, {}; ret;", "nop", const 1, options(noreturn)) } - //~^ ERROR avoid using named labels -} - -#[naked] -pub extern "C" fn aaa() { - fn _local() {} - - unsafe { asm!(".Laaa: nop; ret;", options(noreturn)) } //~ ERROR avoid using named labels -} - -pub fn normal() { - fn _local1() {} - - #[naked] - pub extern "C" fn bbb() { - fn _very_local() {} - - unsafe { asm!(".Lbbb: nop; ret;", options(noreturn)) } //~ ERROR avoid using named labels - } - - fn _local2() {} -} - -// Make sure that the lint happens within closures -fn closures() { - || unsafe { - asm!("closure1: nop"); //~ ERROR avoid using named labels - }; - - move || unsafe { - asm!("closure2: nop"); //~ ERROR avoid using named labels - }; - - || { - #[naked] - unsafe extern "C" fn _nested() { - asm!("ret;", options(noreturn)); - } - - unsafe { - asm!("closure3: nop"); //~ ERROR avoid using named labels - } - }; -} - -// Don't trigger on global asm -global_asm!("aaaaaaaa: nop"); |