Character type functions fail on negative chars
| Bug #25745 | Character type functions fail on negative chars | ||||
|---|---|---|---|---|---|
| Submitted: | 2003-10-03 11:41 UTC | Modified: | 2003-10-03 12:13 UTC | ||
| From: | vesely at tana dot it | Assigned: | moriyoshi (profile) | ||
| Status: | Closed | Package: | *Languages/Translation | ||
| PHP Version: | 4.3.2 | OS: | Solaris 8 (SPARC) | ||
| Private report: | No | CVE-ID: | None | ||
[2003-10-03 11:41 UTC] vesely at tana dot it
Description:
------------
The upper half of the codes are badly reported, e.g
ctype_alpha("?") returns true even under C locale.
As a workaround one may call ctype_alpha(ord("?")),
which works correctly.
Alternatively, the following patch fixes that:
--- php-4.3.2/ext/ctype/ctype.c% 2003-10-03 13:13:46.870457000 +0200
+++ php-4.3.2/ext/ctype/ctype.c 2003-10-03 13:13:46.880455000 +0200
@@ -100,7 +100,7 @@
RETURN_BOOL(iswhat(Z_LVAL_P(c))); \
case IS_STRING: \
{ \
- char *p; \
+ unsigned char *p; \
int n, len; \
p=Z_STRVAL_P(c); \
len = Z_STRLEN_P(c); \
Ciao
Ale
---
below I list character type functions for
easing bug searches
ctype_alnum ctype_alpha ctype_cntrl ctype_digit
ctype_graph ctype_lower ctype_print ctype_punct
ctype_space ctype_upper ctype_xdigit
Reproduce code:
---------------
<?php
$ctype_funcs = array(
"alnum", "alpha", "cntrl", "digit",
"graph", "lower", "print", "punct",
"space", "upper", "xdigit");
$failed = 0;
reset($ctype_funcs);
while ($name = current($ctype_funcs)) {
$test = "\$failed += (
(ctype_$name(%d) ? 1 : 0) !=
(ctype_$name(chr(%d)) ? 1 : 0)
) ? 1 : 0;";
for ($i = 0; $i < 256; ++$i)
eval(sprintf($test, $i, $i));
next($ctype_funcs);
}
print "$failed";
?>
Expected result:
----------------
0
Actual result:
--------------
817
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[2003-10-03 11:59 UTC] vesely at tana dot it
[2003-10-03 12:13 UTC] moriyoshi@php.net