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pike.c: fix edge case

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This commit is contained in:
Kyryl Melekhin
2025-11-01 23:31:14 +00:00
parent a43ab17911
commit 0b7b6b9d81
2 changed files with 8 additions and 3 deletions
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8
pike.c
View File

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

3
test.sh
View File

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