diff options
Diffstat (limited to 'src/libsyntax/ext')
| -rw-r--r-- | src/libsyntax/ext/asm.rs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/libsyntax/ext/asm.rs b/src/libsyntax/ext/asm.rs index fd3bac5b2fc..4258eb32fdf 100644 --- a/src/libsyntax/ext/asm.rs +++ b/src/libsyntax/ext/asm.rs @@ -63,6 +63,12 @@ pub fn expand_asm<'cx>(cx: &'cx mut ExtCtxt, sp: Span, tts: &[ast::TokenTree]) 'statement: loop { match state { Asm => { + if asm_str_style.is_some() { + // If we already have a string with instructions, + // ending up in Asm state again is an error. + cx.span_err(sp, "malformed inline assembly"); + return DummyResult::expr(sp); + } let (s, style) = match expr_to_string(cx, p.parse_expr(), "inline assembly must be a string literal") { Some((s, st)) => (s, st), |