mirror of https://github.com/python/cpython
The 2.0b2 change to write .pyc files in exclusive mode (if possible)
unintentionally caused them to get written in text mode under Windows. As a result, when .pyc files were later read-- in binary mode --the magic number was always wrong (note that .pyc magic numbers deliberately include \r and \n characters, so this was "good" breakage, 100% across all .pyc files, not random corruption in a subset). Fixed that.
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@ -646,7 +646,12 @@ open_exclusive(char *filename)
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*/
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int fd;
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(void) unlink(filename);
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fd = open(filename, O_EXCL|O_CREAT|O_WRONLY|O_TRUNC, 0666);
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fd = open(filename, O_EXCL|O_CREAT|O_WRONLY|O_TRUNC
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#ifdef O_BINARY
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|O_BINARY /* necessary for Windows */
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#endif
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, 0666);
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if (fd < 0)
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return NULL;
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return fdopen(fd, "wb");
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