Commit c7ab3327 authored by Ken Thompson's avatar Ken Thompson

restrict declarations of type map/chan/string

(they must be pointers)

R=r
OCL=21009
CL=21009
parent 73653841
......@@ -483,8 +483,18 @@ loop:
if(n->op != ODCLFIELD || n->type == T)
fatal("stotype: oops %N\n", n);
if(n->type->etype == TARRAY && n->type->bound < 0)
yyerror("type of a structure field cannot be an open array");
switch(n->type->etype) {
case TARRAY:
if(n->type->bound < 0)
yyerror("type of a structure field cannot be an open array");
break;
case TCHAN:
case TMAP:
case TSTRING:
yyerror("%T can exist only in pointer form", n->type);
break;
}
switch(n->val.ctype) {
case CTSTR:
......@@ -732,6 +742,15 @@ addvar(Node *n, Type *t, int ctxt)
pushdcl(s);
}
if(t != T) {
switch(t->etype) {
case TCHAN:
case TMAP:
case TSTRING:
yyerror("%T can exist only in pointer form", t);
}
}
redeclare("variable", s);
s->vargen = gen;
s->oname = n;
......
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