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Report error when using undefined enum

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Prevent the following code from compiling:

int main(void)
{
	enum rgb c = 42;
	return c;
}

Reported-by: John Haque <j.eh@mchsi.com>
This commit is contained in:
Thomas Preud'homme 2013-09-20 21:16:53 +02:00
parent 0f522fb32a
commit 82969f045c
1 changed files with 5 additions and 4 deletions
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9
tccgen.c
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@ -2738,7 +2738,7 @@ static void parse_attribute(AttributeDef *ad)
} }
/* enum/struct/union declaration. u is either VT_ENUM or VT_STRUCT */ /* enum/struct/union declaration. u is either VT_ENUM or VT_STRUCT */
static void struct_decl(CType *type, int u) static void struct_decl(CType *type, int u, int tdef)
{ {
int a, v, size, align, maxalign, c, offset; int a, v, size, align, maxalign, c, offset;
int bit_size, bit_pos, bsize, bt, lbit_pos, prevbt; int bit_size, bit_pos, bsize, bt, lbit_pos, prevbt;
@ -2759,7 +2759,8 @@ static void struct_decl(CType *type, int u)
if (s->type.t != a) if (s->type.t != a)
tcc_error("invalid type"); tcc_error("invalid type");
goto do_decl; goto do_decl;
} } else if (tok >= TOK_IDENT && !tdef)
tcc_error("unknown struct/union/enum");
} else { } else {
v = anon_sym++; v = anon_sym++;
} }
@ -3014,14 +3015,14 @@ static int parse_btype(CType *type, AttributeDef *ad)
} }
break; break;
case TOK_ENUM: case TOK_ENUM:
struct_decl(&type1, VT_ENUM); struct_decl(&type1, VT_ENUM, t & VT_TYPEDEF);
basic_type2: basic_type2:
u = type1.t; u = type1.t;
type->ref = type1.ref; type->ref = type1.ref;
goto basic_type1; goto basic_type1;
case TOK_STRUCT: case TOK_STRUCT:
case TOK_UNION: case TOK_UNION:
struct_decl(&type1, VT_STRUCT); struct_decl(&type1, VT_STRUCT, t & VT_TYPEDEF);
goto basic_type2; goto basic_type2;
/* type modifiers */ /* type modifiers */