From 82969f045c99b4d1ef833de35117c17b326b46c0 Mon Sep 17 00:00:00 2001 From: Thomas Preud'homme Date: Fri, 20 Sep 2013 21:16:53 +0200 Subject: [PATCH] Report error when using undefined enum Prevent the following code from compiling: int main(void) { enum rgb c = 42; return c; } Reported-by: John Haque --- tccgen.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/tccgen.c b/tccgen.c index 53a2b6b..77ff87c 100644 --- a/tccgen.c +++ b/tccgen.c @@ -2738,7 +2738,7 @@ static void parse_attribute(AttributeDef *ad) } /* 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 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) tcc_error("invalid type"); goto do_decl; - } + } else if (tok >= TOK_IDENT && !tdef) + tcc_error("unknown struct/union/enum"); } else { v = anon_sym++; } @@ -3014,14 +3015,14 @@ static int parse_btype(CType *type, AttributeDef *ad) } break; case TOK_ENUM: - struct_decl(&type1, VT_ENUM); + struct_decl(&type1, VT_ENUM, t & VT_TYPEDEF); basic_type2: u = type1.t; type->ref = type1.ref; goto basic_type1; case TOK_STRUCT: case TOK_UNION: - struct_decl(&type1, VT_STRUCT); + struct_decl(&type1, VT_STRUCT, t & VT_TYPEDEF); goto basic_type2; /* type modifiers */