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regex: Remove some unreachable breaks.

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This is based on a much bigger cleanup done in Illumos.

Reference:
https://www.illumos.org/issues/2077

MFC after:	1 week
This commit is contained in:
pfg 2014-05-01 23:34:14 +00:00
parent f9a10360bc
commit 19952369c8
2 changed files with 1 additions and 7 deletions
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7
lib/libc/regex/engine.c
View File

@ -686,19 +686,16 @@ backref(struct match *m,
while (m->g->strip[ss] != SOP(O_BACK, i))
ss++;
return(backref(m, sp+len, stop, ss+1, stopst, lev, rec));
break;
case OQUEST_: /* to null or not */
dp = backref(m, sp, stop, ss+1, stopst, lev, rec);
if (dp != NULL)
return(dp); /* not */
return(backref(m, sp, stop, ss+OPND(s)+1, stopst, lev, rec));
break;
case OPLUS_:
assert(m->lastpos != NULL);
assert(lev+1 <= m->g->nplus);
m->lastpos[lev+1] = sp;
return(backref(m, sp, stop, ss+1, stopst, lev+1, rec));
break;
case O_PLUS:
if (sp == m->lastpos[lev]) /* last pass matched null */
return(backref(m, sp, stop, ss+1, stopst, lev-1, rec));
@ -709,7 +706,6 @@ backref(struct match *m,
return(backref(m, sp, stop, ss+1, stopst, lev-1, rec));
else
return(dp);
break;
case OCH_: /* find the right one, if any */
ssub = ss + 1;
esub = ss + OPND(s) - 1;
@ -730,6 +726,7 @@ backref(struct match *m,
else
assert(OP(m->g->strip[esub]) == O_CH);
}
/* NOTREACHED */
break;
case OLPAREN: /* must undo assignment if rest fails */
i = OPND(s);
@ -741,7 +738,6 @@ backref(struct match *m,
return(dp);
m->pmatch[i].rm_so = offsave;
return(NULL);
break;
case ORPAREN: /* must undo assignment if rest fails */
i = OPND(s);
assert(0 < i && i <= m->g->nsub);
@ -752,7 +748,6 @@ backref(struct match *m,
return(dp);
m->pmatch[i].rm_eo = offsave;
return(NULL);
break;
default: /* uh oh */
assert(nope);
break;

1
lib/libc/regex/regcomp.c
View File

@ -746,7 +746,6 @@ p_b_term(struct parse *p, cset *cs)
case '-':
SETERROR(REG_ERANGE);
return; /* NOTE RETURN */
break;
default:
c = '\0';
break;