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POreading from a text file: strange "\x01\0\0\0" sequences
 

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  1. POreading from a text file: strange "\x01\0\0\0" sequences
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    <p>I have been struggling with this issue for one week, and still far away from the solution.</p> <p>I am reading a plain text from a file by strings. It reads everything successfully until a character with a certain large number. This number is specific for each file, and is different for different files.</p> <p>After reaching the character with this large number, it reads "\x01\0\0\0" sequences (consist of 4 chars) for one or more times instead of the original characters, and then reads everything correctly (until the next large number).</p> <p>In a couple of words - instead of reading this:</p> <pre><code>... many characters ... First read failure! ... many characters ... Second read failure, second read failure! ... many characters ... etc. </code></pre> <p>it reads this:</p> <pre><code>... many characters ... First read f\x01\0\0\0re ... many characters ... Second read failu\x01\0\0\0\x01\0\0\0\x01\0\0\0ead failure! ... many characters ... etc. </code></pre> <p>Do you have any ideas about the cause of this problem?</p> <p>Additional information:</p> <pre><code> 1) The "ferror" condition is not true. 2) I am reading from file using streams (fopen, fread, fclose) 3) Have tested different read methods: "fread cycle" and "fgets". The results are the same. 4) The binary optimization is disabled in the compiler's settings. It seams that the problem is not connected with a compiler. Neither GCC, nor Apple LLVM gives me the desired result. 5) Attempting to solve the issue, I converted the whole project from C++ to C, but the problem doesn't disappear. </code></pre>
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    1. USJake Badlands
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    1. This table or related slice is empty.
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      1. POreading from a text file: strange "\x01\0\0\0" sequences
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      1. USJake Badlands
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    1. COThis could be a hardware failure, or a bug in your program (some buffer overflow perhaps). Are you sure that the disk is in good condition? (Has the file system been checked recently thru `fsck`or similar?) Did you check with an editor that your textual file has the content you believe it has? How was the textual file produced? Or perhaps the producer of that file is buggy. Or perhaps system misconfiguration issues (character encoding...). Did you run your program with `valgrind` ?
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      1. POreading from a text file: strange "\x01\0\0\0" sequences
      1. USBasile Starynkevitch
    2. COYou really should show us the code if you want help here... Did you use your debugger ??
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      1. POreading from a text file: strange "\x01\0\0\0" sequences
      1. USBasile Starynkevitch
    3. COAre you sure that those characters are not in the file? They might not show up when looking at them as text, since they are non-printable.
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      1. USThomas Padron-McCarthy
 

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