Backport #2559 ยป io-write-fix.diff
| io.c | ||
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{
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long len, n, r, l, offset = 0;
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FILE *f = GetWriteFile(fptr);
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#if BSD_STDIO
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off_t cur_offset;
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#endif
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len = RSTRING(str)->len;
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if ((n = len) <= 0) return n;
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| ... | ... | |
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r = write(fileno(f), RSTRING(str)->ptr+offset, l);
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TRAP_END;
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#if BSD_STDIO
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fseeko(f, lseek(fileno(f), (off_t)0, SEEK_CUR), SEEK_SET);
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if (r > 0) {
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cur_offset = lseek(fileno(f), (off_t)0, SEEK_CUR);
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if (cur_offset != -1) {
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if (fseeko(f, cur_offset, SEEK_SET) == -1)
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/* Raise fseeko's error. */
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r = -1;
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}
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else if (errno != ESPIPE) {
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/* Raise lseek's error. */
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r = -1;
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}
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/* else if (errno == ESPIPE) ignore error */
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}
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#endif
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if (r == n) return len;
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if (0 <= r) {
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| test/io/test_write.rb | ||
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require 'test/unit'
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class TestIOWrite < Test::Unit::TestCase
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def test_write
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a, b = IO.pipe
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begin
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a.close
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assert_raises(Errno::EPIPE) do
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b.write("hi")
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end
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ensure
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a.close if !a.closed?
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b.close if !b.closed?
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end
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end
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end
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