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more ambiguous input testing, fixes

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This commit is contained in:
Kyryl Melekhin
2021-10-21 16:35:33 +00:00
parent f038068dbb
commit 91e630abe9
2 changed files with 60 additions and 4 deletions
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16
pike.c
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@@ -92,6 +92,7 @@ typedef struct rsub rsub;
struct rsub
{
int ref;
rsub *freesub;
const char *sub[];
};
@@ -449,13 +450,13 @@ int re_comp(rcode *prog, const char *re, int nsubs)
#define newsub(init, copy) \
if (freesub) \
{ s1 = freesub; freesub = (rsub*)s1->sub[0]; copy } \
{ s1 = freesub; freesub = s1->freesub; copy } \
else \
{ s1 = (rsub*)&nsubs[suboff+=rsubsize]; init } \
#define decref(csub) \
if (--csub->ref == 0) { \
csub->sub[0] = (char*)freesub; \
csub->freesub = freesub; \
freesub = csub; \
} \
@@ -470,6 +471,10 @@ plist[plistidx++] = npc; \
#define onclist(nn) \
#define endnlist() if (*npc == MATCH) nmatch = 1; \
#define endclist() \
#define fastrec(nn, list, listidx) \
nsub->ref++; \
if (*npc < WBEG) { \
@@ -535,6 +540,7 @@ case EOL: \
nsub = subs[i]; \
goto rec##nn; \
} \
end##list() \
continue; \
} \
next##nn: \
@@ -563,7 +569,7 @@ int re_pikevm(rcode *prog, const char *s, const char **subp, int nsubp)
{
int rsubsize = sizeof(rsub)+(sizeof(char*)*nsubp);
int i, j, c, suboff = rsubsize, *npc, osubp = nsubp * sizeof(char*);
int clistidx = 0, nlistidx = 0, plistidx = 0;
int clistidx = 0, nlistidx, plistidx, nmatch;
const char *sp = s, *_sp = s;
int *insts = prog->insts;
int *pcs[prog->splits], *plist[prog->splits];
@@ -576,6 +582,7 @@ int re_pikevm(rcode *prog, const char *s, const char **subp, int nsubp)
for (;; sp = _sp) {
uc_len(i, sp) uc_code(c, sp)
_sp = sp+i;
nlistidx = 0; plistidx = 0; nmatch = 0;
for (i = 0; i < clistidx; i++) {
npc = clist[i].pc;
nsub = clist[i].sub;
@@ -585,6 +592,8 @@ int re_pikevm(rcode *prog, const char *s, const char **subp, int nsubp)
break;
case ANY:
addthread:
if (nmatch)
break;
addthread(2, nlist, nlistidx)
case CLASS:
if (!re_classmatch(npc, c))
@@ -608,7 +617,6 @@ int re_pikevm(rcode *prog, const char *s, const char **subp, int nsubp)
clist = nlist;
nlist = tmp;
clistidx = nlistidx;
nlistidx = 0; plistidx = 0;
if (!matched) {
jmp_start:
newsub(memset(s1->sub, 0, osubp);, /*nop*/)