1 files changed, 31 insertions, 9 deletions

diff --git a/bootstrap/cgen.c b/bootstrap/cgen.c
index 1629151..6321e92 100644
--- a/bootstrap/cgen.c
+++ b/bootstrap/cgen.c
@@ -37,6 +37,9 @@ gentype(const struct type *ty) {
    case TYenum:
       gentype(ty->enu.intty);
       break;
+   case TYvalist:
+      pri("__builtin_va_list");
+      break;
    }
    if (ty->konst)
       pri(" const");
@@ -168,6 +171,7 @@ geneuiniex(struct expr *ex) {
 
 static void
 genexpr(struct expr *ex) {
+   assert(ex);
    const struct type *ty = unconstify(ex->ty);
    struct decl *decl;
 
@@ -284,6 +288,15 @@ genexpr(struct expr *ex) {
       geneuiniex(ex);
       pri(")");
       break;
+   case Evastart:
+      pri("__builtin_va_start(%e, %e)", ex->binop.lhs, ex->binop.rhs);
+      break;
+   case Evaarg:
+      pri("__builtin_va_arg(%e, %t)", ex->child, ex->ty);
+      break;
+   case Evaend:
+      pri("__builtin_va_end(%e)", ex->child);
+      break;
    }
 }
 
@@ -343,15 +356,15 @@ genstmt(struct stmt *stmt) {
       }
       break;
    case Swhile:
-      pri("while (%e) {", &stmt->loop.test);
+      pri("while (%e) {_cont%d:;", &stmt->loop.test, stmt->loop.id);
       genblock(stmt->loop.body);
-      pri("_cont%d:;} _brk%d:;\n", stmt->loop.id, stmt->loop.id);
+      pri("} _brk%d:;\n", stmt->loop.id);
       break;
    case Sdowhile:
-      pri("do {");
+      pri("do {_cont%d:;",stmt->loop.id);
       genblock(stmt->loop.body);
-      pri("_cont%d:;} while (%e); _brk%d:;\n",
-          stmt->loop.id, &stmt->loop.test, stmt->loop.id);
+      pri("} while (%e); _brk%d:;\n",
+          &stmt->loop.test, stmt->loop.id);
       break;
    case Sfor:
       pri("{\n");
@@ -361,10 +374,12 @@ genstmt(struct stmt *stmt) {
       pri("%e;", &stmt->loop.test);
       if (stmt->loop.next)
          pri(" %e", stmt->loop.next);
-      pri(") {");
+      pri(") {goto _skip%d; _cont%d:", stmt->loop.id, stmt->loop.id);
+      if (stmt->loop.next)
+         pri(" %e;", stmt->loop.next);
+      pri("_skip%d:;", stmt->loop.id);
       genblock(stmt->loop.body);
-      pri("_cont%d:; }", stmt->loop.id);
-      pri("} _brk%d:;\n", stmt->loop.id);
+      pri("}} _brk%d:;\n", stmt->loop.id);
       break;
    case Siswitch:
       pri("switch (%e) {", &stmt->iswitch.test);
@@ -505,6 +520,13 @@ liftnestedex(struct expr *ex) {
     case Eeuini:
       liftnestedex(ex->euini.ini);
       break;
+    case Evastart:
+      liftnestedex(ex->binop.lhs);
+      liftnestedex(ex->binop.rhs);
+      break;
+    case Evaarg: case Evaend:
+      liftnestedex(ex->child);
+      break;
    }
 }
 
@@ -676,7 +698,7 @@ defctype(const struct type *ty, void *_) {
 
    if (!ty->_cname)
    switch (ty->t) {
-   case TYvoid: case TYbool:
+   case TYvoid: case TYbool: case TYvalist:
    case TYenum: case TYint: case TYfloat:
       break;
    case TYptr: