From 10750872419df9dc92421c4fd719f42e5561ee77 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Gl=C3=B6ckner?= <daniel-gl@gmx.net>
Date: Sat, 29 Mar 2014 17:50:40 +0100
Subject: [PATCH] ARM: Fix passing arrays to varadic functions

TinyCC miscompiled

void g(int,...);

void f(void)
{
        char b[4000];
        g(1, 2, 3, 4, b);
}

in two ways:
 1. It didn't align the stack to 8 bytes before the call
 2. It added sizeof(b) to the stack pointer after the call
---
 arm-gen.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arm-gen.c b/arm-gen.c
index 1ee008f0..a9c05feb 100644
--- a/arm-gen.c
+++ b/arm-gen.c
@@ -959,7 +959,9 @@ static int assign_regs(int nb_args, int float_abi, struct plan *plan, int *todo)
   memset(plan->clsplans, 0, sizeof(plan->clsplans));
   for(i = nb_args; i-- ;) {
     int j, start_vfpreg = 0;
-    size = type_size(&vtop[-i].type, &align);
+    CType type = vtop[-i].type;
+    type.t &= ~VT_ARRAY;
+    size = type_size(&type, &align);
     size = (size + 3) & ~3;
     align = (align + 3) & ~3;
     switch(vtop[-i].type.t & VT_BTYPE) {