From 84ef3f01055c3a5177f5d0ad90e826bab2eb81bd Mon Sep 17 00:00:00 2001
From: Michael Forney <mforney@mforney.org>
Date: Wed, 13 Feb 2019 21:48:21 -0800
Subject: Make __builtin_va_list a built-in declaration, not keyword

---
 decl.c  | 6 +-----
 decl.h  | 6 +++++-
 main.c  | 1 +
 pp.c    | 1 -
 token.c | 1 -
 token.h | 1 -
 6 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/decl.c b/decl.c
index 4c89753..1699e3e 100644
--- a/decl.c
+++ b/decl.c
@@ -18,6 +18,7 @@
 #include "token.h"
 #include "type.h"
 
+struct declaration builtinvalist = {.kind = DECLTYPE, .type = &typevalist};
 struct declaration builtinvastart = {.kind = DECLBUILTIN};
 struct declaration builtinvaarg = {.kind = DECLBUILTIN};
 struct declaration builtinvaend = {.kind = DECLBUILTIN};
@@ -309,11 +310,6 @@ declspecs(struct scope *s, enum storageclass *sc, enum funcspecifier *fs, int *a
 		case T_ATOMIC:
 			fatal("_Atomic is not yet supported");
 			break;
-		case T__BUILTIN_VA_LIST:
-			t = &typevalist;
-			++ntypes;
-			next();
-			break;
 		case TSTRUCT:
 		case TUNION:
 		case TENUM:
diff --git a/decl.h b/decl.h
index 3e3c5af..024d78a 100644
--- a/decl.h
+++ b/decl.h
@@ -25,7 +25,11 @@ struct declaration {
 struct scope;
 struct function;
 
-extern struct declaration builtinvastart, builtinvaarg, builtinvaend, builtinoffsetof;
+extern struct declaration builtinvalist;
+extern struct declaration builtinvastart;
+extern struct declaration builtinvaarg;
+extern struct declaration builtinvaend;
+extern struct declaration builtinoffsetof;
 
 struct declaration *mkdecl(enum declarationkind, struct type *, enum linkage);
 _Bool decl(struct scope *, struct function *);
diff --git a/main.c b/main.c
index c8491eb..4402730 100644
--- a/main.c
+++ b/main.c
@@ -53,6 +53,7 @@ main(int argc, char *argv[])
 			next();
 		}
 	} else {
+		scopeputdecl(&filescope, "__builtin_va_list", &builtinvalist);
 		scopeputdecl(&filescope, "__builtin_va_start", &builtinvastart);
 		scopeputdecl(&filescope, "__builtin_va_arg", &builtinvaarg);
 		scopeputdecl(&filescope, "__builtin_va_end", &builtinvaend);
diff --git a/pp.c b/pp.c
index 0ca7a28..41b67ed 100644
--- a/pp.c
+++ b/pp.c
@@ -28,7 +28,6 @@ keyword(struct token *tok)
 		{"_Noreturn",         T_NORETURN},
 		{"_Static_assert",    T_STATIC_ASSERT},
 		{"_Thread_local",     T_THREAD_LOCAL},
-		{"__builtin_va_list", T__BUILTIN_VA_LIST},
 		{"auto",              TAUTO},
 		{"break",             TBREAK},
 		{"case",              TCASE},
diff --git a/token.c b/token.c
index 7b079f7..d118fd7 100644
--- a/token.c
+++ b/token.c
@@ -52,7 +52,6 @@ static char *tokstr[] = {
 	[T_NORETURN] = "_Noreturn",
 	[T_STATIC_ASSERT] = "_Static_assert",
 	[T_THREAD_LOCAL] = "_Thread_local",
-	[T__BUILTIN_VA_LIST] = "__builtin_va_list",
 
 	/* punctuator */
 	[TLBRACK] = "[",
diff --git a/token.h b/token.h
index ecede55..3b0fbb7 100644
--- a/token.h
+++ b/token.h
@@ -54,7 +54,6 @@ enum tokenkind {
 	T_NORETURN,
 	T_STATIC_ASSERT,
 	T_THREAD_LOCAL,
-	T__BUILTIN_VA_LIST,
 
 	/* punctuator */
 	TLBRACK,
-- 
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