Static initalized values panic on release builds

[pquux]

The example code for static initialized values panics on release builds on linux. Happy to provide any more details

#[macro_use]
extern crate ctor;

use std::collections::HashMap;

#[ctor]
/// This is an immutable static, evaluated at init time
static STATIC_CTOR: HashMap<u32, &'static str> = {
    let mut m = HashMap::new();
    m.insert(0, "foo");
    m.insert(1, "bar");
    m.insert(2, "baz");
    m
};

fn main() {
    println!("{:x} -> {}", 1, STATIC_CTOR.get(&1).unwrap());
}

Debug:

$ cargo run
   Compiling proc-macro2 v0.4.27
   Compiling unicode-xid v0.1.0
   Compiling syn v0.15.30
   Compiling quote v0.6.11
   Compiling ctor v0.1.8
   Compiling ctor-opt v0.1.0 (/home/x/ctor-opt)
    Finished dev [unoptimized + debuginfo] target(s) in 14.96s
     Running `target/debug/ctor-opt`
1 -> bar

Release:

$ cargo run --release
   Compiling proc-macro2 v0.4.27
   Compiling unicode-xid v0.1.0
   Compiling syn v0.15.30
   Compiling quote v0.6.11
   Compiling ctor v0.1.8
   Compiling ctor-opt v0.1.0 (/home/x/ctor-opt)
    Finished release [optimized] target(s) in 39.53s
     Running `target/release/ctor-opt`
thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', src/libcore/option.rs:345:21
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
   1: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:71
   2: std::panicking::default_hook::{{closure}}
             at src/libstd/sys_common/backtrace.rs:59
             at src/libstd/panicking.rs:197
   3: std::panicking::default_hook
             at src/libstd/panicking.rs:211
   4: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:474
   5: std::panicking::continue_panic_fmt
             at src/libstd/panicking.rs:381
   6: rust_begin_unwind
             at src/libstd/panicking.rs:308
   7: core::panicking::panic_fmt
             at src/libcore/panicking.rs:85
   8: core::panicking::panic
             at src/libcore/panicking.rs:49
   9: ctor_opt::main
  10: std::rt::lang_start::{{closure}}
  11: std::panicking::try::do_call
             at src/libstd/rt.rs:49
             at src/libstd/panicking.rs:293
  12: __rust_maybe_catch_panic
             at src/libpanic_unwind/lib.rs:87
  13: std::rt::lang_start_internal
             at src/libstd/panicking.rs:272
             at src/libstd/panic.rs:388
             at src/libstd/rt.rs:48
  14: main
  15: __libc_start_main
  16: _start

$ rustc --version
rustc 1.35.0-nightly (3750348da 2019-04-08)
$ uname -a
Linux 4.19.0-2-amd64 #1 SMP Debian 4.19.16-1 (2019-01-17) x86_64 GNU/Linux

[jonas-schievink]

Also see rust-lang/rust#59919

[mmastrac]

Thanks for the pointers - working on reproing and fixing this now.

[mmastrac]

Fixed in 0.1.9 & pushed to crates.io.