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Bug 13443 – stdin/stdout/stderr should be accessible from @safe code

Status: RESOLVED
Resolution: DUPLICATE
Severity: normal
Priority: P1
Component: phobos
Product: D
Version: D2
Platform: All
OS: All
Creation time: 2014-09-09T10:33:00Z
Last change time: 2016-06-25T05:31:37Z
Keywords: safe
Assigned to: nobody
Creator: dlang-bugzilla

Comments

Comment #0 by dlang-bugzilla — 2014-09-09T10:33:26Z

Currently, the standard File variables in std.stdio are not accessible from @safe code, because they are declared as __gshared. From looking at the code, it looks like they are indeed not thread-safe - the reference counter is not incremented/decremented atomically.

Comment #1 by lt.infiltrator — 2015-12-03T13:49:39Z

So should the solution be to make them not __gshared; or to fix them to be thread-safe and continue to disallow them in @safe code?

Comment #2 by dlang-bugzilla — 2015-12-03T14:20:22Z

Not sure, but one thing to keep in mind is that C I/O is already implicitly synchronized (see e.g. LockingTextReader/Writer).

Comment #3 by bugzilla — 2016-06-25T00:43:01Z

Yes, they are already synchronized. Perhaps wrap them in an @trusted wrapper.

Comment #4 by bugzilla — 2016-06-25T05:31:37Z

A trusted wrapper doesn't work. Better explanation in https://issues.dlang.org/show_bug.cgi?id=15768 *** This issue has been marked as a duplicate of issue 15768 ***