Symbol: DTRACE_ISALPHA
usr/src/uts/common/dtrace/dtrace.c
7779
if (!DTRACE_ISALPHA(c) && c != '-' && c != '_' && c != '.')
usr/src/uts/common/dtrace/dtrace.c
7783
if (!DTRACE_ISALPHA(c) && (c < '0' || c > '9') &&