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Getting rid of the struct and the indexing, what you have is</div>
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char ssid[30];</div>
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char buf[100]</div>
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snprintf (buf, sizeof (ssid), "SSID %s\n", ssid);<br>
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which is a request to write 5 chars ("SSID ") followed by any number of chars ending in a NUL (perhaps overrunning the end of ssid if there are no NUL in it) followed by \n and a trailing NUL into the first upto 30 characters of buf. The warning is assuming
(incorrectly) that ssid will contain less than 30 non-NULL characters, hence decides may need upto 37 characters (should have been 36) (5 + 29 + 1 + 1) and you have only supplied 30</div>
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/Bevin</div>
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