[asterisk-bugs] [JIRA] Created: (ASTERISK-20477) GSM encoding is not thread safe

[Rusty Newton (JIRA)]

GSM encoding is not thread safe
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                 Key: ASTERISK-20477
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20477
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Codecs/codec_gsm
    Affects Versions: 1.8.16.0, 10.8.0, 11.0.0-beta2
            Reporter: Richard Miller


The file codecs/gsm/src/code.c uses a static variable "e" that it is passing down into a lower level function.  The original author in patch level 12 moved it into the gsm_state structure, but that really isn't necessary.  All that needs to be done is to make it a temporary local variable by removing the "static" qualifier.  The bug does not affect decoding, only encoding.

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