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don't use memset (bad complexity)

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This commit is contained in:
Kyryl Melekhin
2021-08-04 20:53:43 +00:00
parent d854382c41
commit 95a9274ef3
1 changed files with 4 additions and 7 deletions
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11
pike.c
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@@ -550,7 +550,6 @@ int re_pikevm(rcode *prog, const char *s, const char **subp, int nsubp)
rthread _clist[prog->len]; rthread _clist[prog->len];
rthread _nlist[prog->len]; rthread _nlist[prog->len];
rthread *clist = _clist, *nlist = _nlist, *tmp; rthread *clist = _clist, *nlist = _nlist, *tmp;
memset(nsubs, 0, rsubsize * (prog->len - prog->splits));
for(i = 0; i < nsubp; i++) for(i = 0; i < nsubp; i++)
subp[i] = NULL; subp[i] = NULL;
gen = prog->gen; gen = prog->gen;
@@ -591,18 +590,16 @@ int re_pikevm(rcode *prog, const char *s, const char **subp, int nsubp)
jmp_start: jmp_start:
newsub() newsub()
s1->ref = 1; s1->ref = 1;
for (i = 1; i < nsubp; i++)
s1->sub[i] = NULL;
s1->sub[0] = sp + l; s1->sub[0] = sp + l;
addthread(1, clist, clistidx, insts, s1) addthread(1, clist, clistidx, insts, s1)
} else if (!clistidx) } else if (!clistidx)
break; break;
} }
if(matched) { if(matched) {
for(i = 0; i < nsubp; i+=2) { for(i = 0; i < nsubp; i++)
if (matched->sub[i] && matched->sub[i+1]) { subp[i] = matched->sub[i];
subp[i] = matched->sub[i];
subp[i+1] = matched->sub[i+1];
}
}
_return(1) _return(1)
} }
_return(0) _return(0)