Change:
<ins> // Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your // option. This file may not be copied, modified, or distributed // except according to those terms. // min-lldb-version: 310 // compile-flags:-g // === GDB TESTS =================================================================================== // gdb-command:run // gdb-command:print s // gdb-check:$1 = [...]"abcd" // gdb-command:print len // gdb-check:$2 = 20 // gdb-command:print local0 // gdb-check:$3 = 19 // gdb-command:print local1 // gdb-check:$4 = true // gdb-command:print local2 // gdb-check:$5 = 20.5 // gdb-command:continue // === LLDB TESTS ================================================================================== // lldb-command:run // lldb-command:print len // lldb-check:[...]$0 = 20 // lldb-command:print local0 // lldb-check:[...]$1 = 19 // lldb-command:print local1 // lldb-check:[...]$2 = true // lldb-command:print local2 // lldb-check:[...]$3 = 20.5 // lldb-command:continue #![allow(unused_variables)] #![allow(dead_code)] #![omit_gdb_pretty_printer_section] #[no_mangle] pub unsafe extern "C" fn fn_with_c_abi(s: *const u8, len: i32) -> i32 { let local0 = len - 1; let local1 = len > 2; let local2 = (len as f64) + 0.5; zzz(); // #break return 0; } fn main() { unsafe { fn_with_c_abi(b"abcd0".as_ptr(), 20); } } #[inline(never)] fn zzz() {()} </ins>

Discussion:
Rust version: OS: Gentoo Linux AMD64
cc
The same thing happens with openssl-sys 0.4.1:
For anyone running into this, you can disable debug info to work around the issue until it's fixed:
Same problem here. Rust version: rustc 1.0.0-nightly ( 2015-02-17) (built 2015-02-18) Operating System: OS X Yosemite 10.10.2
It looks like I have the same problem: Compiling mio v0.2.1 () Running 1:1 error: internal compiler error: debuginfo: Could not find scope info for node NodeExpr(Expr { id: 5326, node: ExprStruct(Path { span: Span { lo: BytePos(0), hi: BytePos(0), expnid: ExpnId() }, global: false, segments: [PathSegment { identifier: StaticMutex, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }] }, [Field { ident: Spanned { node: lock, span: Span { lo: BytePos(0), hi: BytePos(0), expnid: ExpnId() } }, expr: Expr { id: 5327, node: ExprPath(Path { span: Span { lo: BytePos(0), hi: BytePos(0), expnid: ExpnId() }, global: false, segments: [PathSegment { identifier: sys, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }, PathSegment { identifier: MUTEXINIT, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }] }), span: Span { lo: BytePos(0), hi: BytePos(0), expnid: ExpnId() } }, span: Span { lo: BytePos(0), hi: BytePos(0), expnid: ExpnId() } }, Field { ident: Spanned { node: poison, span: Span { lo: BytePos(0), hi: BytePos(0), expnid: ExpnId() } }, expr: Expr { id: 5328, node: ExprPath(Path { span: Span { lo: BytePos(0),

hi: BytePos(0), expnid: ExpnId() }, global: false, segments: [PathSegment { identifier: poison, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }, PathSegment { identifier: FLAGINIT, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }] }), span: Span { lo: BytePos(0), hi: BytePos(0), expnid: ExpnId() } }, span: Span { lo: BytePos(0), hi: BytePos(0), expnid: ExpnId() } }], None), span: Span { lo: BytePos(0), hi: BytePos(0), expnid: ExpnId() } }) #![allow(noncamelcasetypes, nonuppercaseglobals, nonsnakecase)] ^ Rust version: rustc 1.0.0-nightly ( 2015-02-17) (built 2015-02-18) OS: 3.13.0-24-generic -Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x8664 x8664 x86_64 GNU/Linux
A minimized version:
Minimized a bit further actually, perhaps you could publish a version which uses instead of on the vector of ?
Er, nevermind, I have against rust-openssl to temporarily fix this.
I encountered a similar problem with constants in match patterns. This very probably has the same root cause, which is that the AST of constants gets substituted for the constant-reference during trans, but then we suddenly have a bunch of unrelated AST node ids in there. I'll try to fix this this week.
My minimal case: