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Fix strswab() to reliably find end of string

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Patch by Andrew Dyer, 08 Feb 2005
This commit is contained in:
Wolfgang Denk 2005-09-25 16:15:17 +02:00
parent 6ed6ce62be
commit 389db1f113
2 changed files with 9 additions and 5 deletions
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3
CHANGELOG
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@ -2,6 +2,9 @@
Changes for U-Boot 1.1.4: Changes for U-Boot 1.1.4:
====================================================================== ======================================================================
* Fix strswab() to reliably find end of string
Patch by Andrew Dyer, 08 Feb 2005
* Fix typos in include/ppc440.h * Fix typos in include/ppc440.h
Patch by Andrew E Mileski, 04 Feb 2005 Patch by Andrew E Mileski, 04 Feb 2005

11
lib_generic/string.c
View File

@ -374,17 +374,18 @@ char * strsep(char **s, const char *ct)
*/ */
char *strswab(const char *s) char *strswab(const char *s)
{ {
char *p; char *p, *q;
if ((NULL == s) || ('\0' == *s)) { if ((NULL == s) || ('\0' == *s)) {
return (NULL); return (NULL);
} }
for (p = ((char *)s + 1); '\0' != *p; p += 2) { for (p=(char *)s, q=p+1; (*p != '\0') && (*p != '\0'); p+=2, q+=2) {
char tmp; char tmp;
tmp = *(p-1);
*(p-1) = *p; tmp = *p;
*p = tmp; *p = *q;
*q = tmp;
} }
return (char *) s; return (char *) s;