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win32.c: EPIPE for ERROR_NO_DATA

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* win32/win32.c (rb_w32_write): writing to closed pipe fails with
  ERROR_NO_DATA but msvcrt maps it to EINVAL.  map it to EPIPE.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62150 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-02-01 02:56:28 +00:00
parent 6381d49801
commit 044e6f12be
2 changed files with 24 additions and 1 deletions
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19
test/ruby/test_pipe.rb
View file

@ -27,4 +27,23 @@ class TestPipe < Test::Unit::TestCase
end
end
end
def test_stdout_epipe
assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
begin;
io = STDOUT
begin
save = io.dup
IO.popen("echo", "w", out: IO::NULL) do |f|
io.reopen(f)
Process.wait(f.pid)
assert_raise(Errno::EPIPE) do
io.print "foo\n"
end
end
ensure
io.reopen(save)
end
end;
end
end

6
win32/win32.c
View file

@ -7119,7 +7119,11 @@ rb_w32_write(int fd, const void *buf, size_t size)
if ((_osfile(fd) & FTEXT) &&
(!(_osfile(fd) & FPIPE) || fd == fileno(stdout) || fd == fileno(stderr))) {
return _write(fd, buf, size);
ssize_t w = _write(fd, buf, size);
if (w == (ssize_t)-1 && errno == EINVAL) {
errno = map_errno(GetLastError());
}
return w;
}
rb_acrt_lowio_lock_fh(fd);