collapse_debuginfo does not work with static declarations.

[Dirbaio]

I tried this code:

#[collapse_debuginfo(yes)]
macro_rules! decl_foo {
    () => {
        #[no_mangle]
        static FOO: u32 = 0; // line 5
    };
}

decl_foo!(); // line 9

fn main() {
    println!("Hello, {}!", &FOO as *const u32 as usize);
}

then

cargo build
llvm-dwarfdump target/debug/collapse

shows

0x0000057e:     DW_TAG_variable
                  DW_AT_name	("FOO")
                  DW_AT_type	(0x00000602 "u32")
                  DW_AT_external	(true)
                  DW_AT_decl_file	("/home/dirbaio/collapse/src/main.rs")
                  DW_AT_decl_line	(5)
                  DW_AT_alignment	(4)
                  DW_AT_location	(DW_OP_addr 0x530c)

I'd expect DW_AT_decl_line to be 9 (the line where the macro is called), not 5 (the line where the static is defined inside the macro).

Meta

rustc --version --verbose:

rustc 1.81.0-nightly (d0227c6a1 2024-06-11)
binary: rustc
commit-hash: d0227c6a19c2d6e8dceb87c7a2776dc2b10d2a04
commit-date: 2024-06-11
host: x86_64-unknown-linux-gnu
release: 1.81.0-nightly
LLVM version: 18.1.7

[workingjubilee]

cc @petrochenkov