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more on t,ok = I.(T)

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R=r
OCL=18599
CL=18599
This commit is contained in:
Ken Thompson 2008-11-05 15:33:01 -08:00
parent 48d111f0b9
commit 83a798513c
1 changed files with 16 additions and 0 deletions
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16
src/cmd/gc/walk.c
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@ -469,6 +469,7 @@ loop:
case OCONV:
if(cl == 2 && cr == 1) {
// a,b = i.(T)
walktype(r->left, Erv);
if(r->left == N)
break;
et = isandss(r->type, r->left);
@ -2964,6 +2965,20 @@ multi:
n = list(n, a);
break;
case OCONV:
// a,b := i.(T)
if(cl != 2)
goto badt;
walktype(nr->left, Erv);
if(!isinter(nr->left->type))
goto badt;
// a,b = iface
a = old2new(nl->left, nr->type);
n = a;
a = old2new(nl->right, types[TBOOL]);
n = list(n, a);
break;
case ORECV:
if(cl != 2)
goto badt;
@ -2975,6 +2990,7 @@ multi:
n = a;
a = old2new(nl->right, types[TBOOL]);
n = list(n, a);
break;
}
n = rev(n);
return n;