func: static char *CVE_2013_0874_VULN_doubles2str(double *dp, int count, const char *sep) int i ; char * ap , * ap0 ; int component_len ; if ( ! sep )  sep = ", "; component_len = 15 + strlen ( sep ); ap = av_malloc ( component_len * count ); if ( ! ap )  ap [ 0 ] = '\0'; for (i = 0; i < count; i++) unsigned l = snprintf ( ap , component_len , "%f%s" , dp [ i ] , sep ) ; if ( l >= component_len )  ap += l; 