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fix byte_rchr return value (Marcus Winkler)

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leitner 2004-03-07 21:59:36 +00:00
parent d8ce4dc2e5
commit b65d281e53
3 changed files with 13 additions and 5 deletions
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1
CHANGES
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@ -4,6 +4,7 @@
io_trywrite and io_waitwrite not ignore SIGPIPE io_trywrite and io_waitwrite not ignore SIGPIPE
add man pages for libio, safemult add man pages for libio, safemult
fix possible signal race in io_tryread and io_trywrite (Scott Lamb) fix possible signal race in io_tryread and io_trywrite (Scott Lamb)
fix byte_rchr return value (Marcus Winkler)
0.18: 0.18:
make libowfat compile on BSD again (sorry, and thanks to everyone who make libowfat compile on BSD again (sorry, and thanks to everyone who

10
byte/byte_rchr.c
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@ -7,10 +7,10 @@ unsigned long byte_rchr(const void* haystack,unsigned long len,char needle) {
register const char* s=haystack; register const char* s=haystack;
register const char* t=s+len; register const char* t=s+len;
for (;;) { for (;;) {
--t; if (s>=t) break; if (*t==c) break; --t; if (s>=t) break; if (*t==c) return t-s;
--t; if (s>=t) break; if (*t==c) break; --t; if (s>=t) break; if (*t==c) return t-s;
--t; if (s>=t) break; if (*t==c) break; --t; if (s>=t) break; if (*t==c) return t-s;
--t; if (s>=t) break; if (*t==c) break; --t; if (s>=t) break; if (*t==c) return t-s;
} }
return t-s; return len;
} }

7
t.c
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@ -24,6 +24,12 @@
__asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx") __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx")
int main(int argc,char* argv[]) { int main(int argc,char* argv[]) {
char buf[100]="/usr/bin/sh";
int len=str_len(buf);
assert(byte_rchr(buf,len,'/')==8);
assert(byte_rchr(buf,len,'@')==len);
assert(byte_rchr(buf,len,'h')==len-1);
#if 0
char buf[IP6_FMT+100]; char buf[IP6_FMT+100];
int i; int i;
char ip[16]; char ip[16];
@ -39,6 +45,7 @@ int main(int argc,char* argv[]) {
scan_ip6("2001:7d0:0:f015:0:0:0:1",ip); scan_ip6("2001:7d0:0:f015:0:0:0:1",ip);
buffer_put(buffer_1,buf,fmt_ip6(buf,ip)); buffer_put(buffer_1,buf,fmt_ip6(buf,ip));
buffer_putnlflush(buffer_1); buffer_putnlflush(buffer_1);
#endif
#if 0 #if 0
char buf[100]; char buf[100];
int i; int i;