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The scanf functions must return EOF if source starts at the end of input. 

The $fscanf() and $sscanf() functions are defined to return EOF when
the end of input is reached before any matches or match failures have
occurred.
This commit is contained in:
Cary R 2009-07-23 14:34:54 -07:00 committed by Stephen Williams
parent e932c41587
commit c5ee1fdbf5
1 changed files with 8 additions and 0 deletions
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8
vpi/sys_scanf.c
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@ -240,6 +240,14 @@ static int scan_format(vpiHandle callh, struct byte_source*src, vpiHandle argv)
vpi_get_value(item, &val); vpi_get_value(item, &val);
fmtp = fmt = strdup(val.value.str); fmtp = fmt = strdup(val.value.str);
/* See if we are at EOF before we even start. */
ch = byte_getc(src);
if (ch == EOF) {
rc = EOF;
match_fail = 1;
}
byte_ungetc(src, ch);
while ( fmtp && *fmtp != 0 && !match_fail) { while ( fmtp && *fmtp != 0 && !match_fail) {
if (isspace(*fmtp)) { if (isspace(*fmtp)) {