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BUG: Stop loc_strnlen reading one byte past the buffer it is given #103

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BUG: Stop loc_strnlen reading one byte past the buffer it is given #103

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3 changes: 2 additions & 1 deletion cifti/afni_xml.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1021,7 +1021,8 @@ static int64_t loc_strnlen(const char * str, int64_t maxlen)
const char * sptr;
int64_t len;

for( sptr=str, len=0; *sptr && len<maxlen; sptr++, len++)
/* test the length first: str need not be terminated within maxlen */
for( sptr=str, len=0; len<maxlen && *sptr; sptr++, len++)
;

return len; /* max of maxlen */
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