pike.c: fix edge case

pike.c

@@ -298,6 +298,10 @@ static int compilecode(const char *re_loc, rcode *prog, int sizecode)
 					memcpy(&code[PC], &code[term], size*sizeof(int));
 				PC += size;
 			}
+			if (!mincnt) {
+				nojmp = 2;
+				mincnt++;
+			}
 			for (i = maxcnt-mincnt; i > 0; i--) {
 				EMIT(PC++, SPLIT);
 				EMIT(PC++, REL(PC, PC+((size+2)*i)));
@@ -305,10 +309,8 @@ static int compilecode(const char *re_loc, rcode *prog, int sizecode)
 					memcpy(&code[PC], &code[term], size*sizeof(int));
 				PC += size;
 			}
-			if (!mincnt && maxcnt) {
-				nojmp = 1;
+			if (nojmp == 2)
 				goto zcase;
-			}
 			break;
 		case '?':
 			if (PC == term)

test.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 regex="\
+(aaaa){0,2}
 a{0}
 (aaaa){0,}
 (aaaa){0,0}
@@ -209,6 +210,7 @@ aaaaa(aa)aa(aa(a)a)?aa
 (((?:(?:(?:ffffff(a)?ffff)+)+?)*)*)+
 "
 input="\
+aaaaaaaaaaaa
 aaaaaaaaaa
 aaaaaaaaaa
 aaaaaaaaaa
@@ -417,6 +419,7 @@ fffffaffffffffff
 fffffffffffffffffffffffff
 "
 expect="\
+(0,8)(4,8)
 (0,0)
 (0,8)(4,8)
 (0,0)(?,?)