Trying to access std::sys_common::io::DEFAULT_BUF_SIZE;

[IgnoreAmos]

I was experimenting with BufReader code to make it work with bit streams and
wanted to use the same default buffer size:

const DEFAULT_BUF_SIZE: usize = std::sys_common::io::DEFAULT_BUF_SIZE;

Meta

rustc --version --verbose:

rustc --version --verbose
rustc 1.15.1 (021bd29 2017-02-08)
binary: rustc
commit-hash: 021bd29
commit-date: 2017-02-08
host: x86_64-pc-windows-gnu
release: 1.15.1
LLVM version: 3.9

Backtrace:

cargo build --verbose
Compiling BitStream v0.1.0 (file:///E:/Ex%20nihilo/rust/BitStream)
Running rustc --crate-name BitStream src\lib.rs --crate-type lib -g -C metadata=68c310b10395856d -C extra-filename=-68c310b10395856d --out-dir "E:\Ex nihilo\rust\BitStream\target\debug\deps" --emit=dep-info,link -L "dependency=E:\Ex nihilo\rust\BitStream\target\debug\deps"
error: module sys_common is private
--> src\lib.rs:21:33
|
21 | const DEFAULT_BUF_SIZE: usize = std::sys_common::io::DEFAULT_BUF_SIZE;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: internal compiler error: C:\bot\slave\stable-dist-rustc-win-gnu-64\build\src\librustc\middle\stability.rs:551: encountered unmarked API
--> src\lib.rs:21:33
|
21 | const DEFAULT_BUF_SIZE: usize = std::sys_common::io::DEFAULT_BUF_SIZE;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: run with RUST_BACKTRACE=1 for a backtrace

thread 'rustc' panicked at 'Box', C:\bot\slave\stable-dist-rustc-win-gnu-64\build\src\librustc_errors\lib.rs:382
stack backtrace:
0: 0x70a2f98e -
1: 0x70a2f154 -
2: 0x70a30b4a -
3: 0x6ea18fdb -
4: 0x6ebd55b7 -
5: 0x6ebd5355 -
6: 0x6ebd4bf4 -
7: 0x6ebb1761 -
8: 0x6ebb2329 -
9: 0x6eab515d -
10: 0x6ebb00b0 -
11: 0x6dcec747 -
12: 0x6dccf8a9 -
13: 0x6dcb852c -
14: 0x6dd05b06 -
15: 0x6dc0ad65 -
16: 0x70a338c8 -
17: 0x6dc27902 -
18: 0x70a2d432 -
19: 0x7ffd57228363 -

error: Could not compile BitStream.

Caused by:
process didn't exit successfully: rustc --crate-name BitStream src\lib.rs --crate-type lib -g -C metadata=68c310b10395856d -C extra-filename=-68c310b10395856d --out-dir E:\Ex nihilo\rust\BitStream\target\debug\deps --emit=dep-info,link -L dependency=E:\Ex nihilo\rust\BitStream\target\debug\deps (exit code: 101)

[sfackler]

That constant is private - you won't be able to access it. The ICE should definitely be fixed, though.

[petrochenkov]

Duplicate of #38857