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Bug #13546

closed

std steams are closed in Windows app.

Added by alex (Alex Epifanov) over 4 years ago. Updated over 4 years ago.

Status:
Rejected
Priority:
Normal
Assignee:
-
Target version:
-
[ruby-core:81015]

Description

We are embedding Ruby VM into a windows app ( msvc2015 CRT ). VM fails to initialize in Init_IO with 'closed stream', when initing stdin, stdout and stderr. Debugging shows that fileno() call for stdin and stderr returns -2 value and it is not and error according to MSDN:

https://msdn.microsoft.com/en-us/en-en/library/zs6wbdhx.aspx
"If stdout or stderr is not associated with an output stream (for example, in a Windows application without a console window), the file descriptor returned is -2. In previous versions, the file descriptor returned was -1. This change allows applications to distinguish this condition from an error."

Applying following patch to rb_io_check_closed seems to resolve the issue:

#ifdef _WIN32
    if ((fptr->fd < 0) && (fptr->fd != -2) ) {
#else
    if (fptr->fd < 0) {
#endif
    rb_raise(rb_eIOError, closed_stream);
    }

Updated by nobu (Nobuyoshi Nakada) over 4 years ago

  • Status changed from Open to Feedback
  • Description updated (diff)

Do you call ruby_sysinit?

Updated by alex (Alex Epifanov) over 4 years ago

nobu (Nobuyoshi Nakada) wrote:

Do you call ruby_sysinit?

Our initialization code looks like this:

    RUBY_INIT_STACK;
    ruby_init();
#if defined(WIN32)
    rb_w32_sysinit(NULL,NULL);
#endif

Updated by nobu (Nobuyoshi Nakada) over 4 years ago

  • Status changed from Feedback to Rejected

Where do you define WIN32?
Note that the predefined macro is _WIN32.
And the call to rb_w32_sysinit must be before ruby_init, and the arguments must not be NULL.

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