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giuliozelante / support-tools

Automatically exported from code.google.com/p/support-tools
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problem with function peektail in circular.c in project logomatic-kwan #137

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Using function peektail
2.
3.

What is the expected output? What do you see instead?

Thought it might help someone else...

Output is ok until int pos reaches the circular buffer size, then it returns 
random characters.

Below is the corrected function:

char peekTail(circular* buf, int pos) {
  pos+=buf->tail;
  pos&=0x3FF;
  return buf->buf[pos%CIRCULAR_BUFFER_SIZE];
}

Original issue reported on code.google.com by chrismn...@gmail.com on 20 Sep 2015 at 3:39