use sys/poll.h instead of poll.h for iopause

scan_ip6 returned 1 for "::"

CHANGES

@@ -5,6 +5,7 @@
   extended uudecode test.  See comment at top for details.
   fix #include in ndelay*.3 (Hynek Schlawack)
   add stralloc_diff and stralloc_diffs (my invention)
+  scan_ip6 returned 1 for "::" (Uwe Ohse)
 
 0.14:
   avoid bus errors in byte_copy

iopause.h2

@@ -5,7 +5,7 @@
 #define IOPAUSE_POLL
 
 #include <sys/types.h>
-#include <poll.h>
+#include <sys/poll.h>
 
 typedef struct pollfd iopause_fd;
 #define IOPAUSE_READ POLLIN

socket/scan_ip6.c

@@ -27,13 +27,13 @@ unsigned int scan_ip6(const char *s,char ip[16])
   for (i=0; i<16; i++) ip[i]=0;
   for (;;) {
     if (*s == ':') {
-      len++;
-      if (s[1] == ':') {	/* Found "::", skip to part 2 */
-	s+=2;
-	len++;
+      ++len;
+      ++s;
+      if (*s == ':') {	/* Found "::", skip to part 2 */
+	++len;
+	++s;
 	break;
       }
-      s++;
     }
     i = scan_xlong(s,&u);
     if (!i) return 0;
@@ -59,11 +59,12 @@ unsigned int scan_ip6(const char *s,char ip[16])
 	break;
       s++;
       len++;
-    } else if (suffixlen!=0)
+    } else if (suffixlen)
       break;
     i = scan_xlong(s,&u);
     if (!i) {
-      len--;
+      if (suffixlen)
+	--len;
       break;
     }
     if (suffixlen+prefixlen<=12 && s[i]=='.') {

t.c

@@ -7,6 +7,7 @@
 #include "socket.h"
 #include "buffer.h"
 #include "ip4.h"
+#include "ip6.h"
 #include "mmap.h"
 #include "open.h"
 #include "byte.h"
@@ -22,6 +23,12 @@
      __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx")
 
 int main(int argc,char* argv[]) {
+  char ip[16];
+  char buf[32];
+  printf("%d (expect 2)\n",scan_ip6("::",ip));
+  printf("%d (expect 3)\n",scan_ip6("::1",ip));
+  printf("%d (expect 16)\n",scan_ip6("fec0:0:0:ffff::1/0",ip));
+  printf("%.*s\n",fmt_ip6(buf,ip),buf);
 #if 0
   static stralloc s,t;
   stralloc_copys(&s,"fnord");
@@ -31,6 +38,7 @@ int main(int argc,char* argv[]) {
   stralloc_copys(&t,"fnordh"); printf("%d\n",stralloc_diff(&s,&t));
   stralloc_copys(&t,"hausen"); printf("%d\n",stralloc_diff(&s,&t));
 #endif
+#if 0
   static stralloc s;
   stralloc_copys(&s,"fnord");
   printf("%d\n",stralloc_diffs(&s,"abc"));
@@ -38,6 +46,7 @@ int main(int argc,char* argv[]) {
   printf("%d\n",stralloc_diffs(&s,"fnord"));
   printf("%d\n",stralloc_diffs(&s,"fnordh"));
   printf("%d\n",stralloc_diffs(&s,"hausen"));
+#endif
 #if 0
   printf("%d\n",case_starts("fnordhausen","FnOrD"));
   printf("%d\n",case_starts("fnordhausen","blah"));