From 3ab269c56ac1bb79956c0160382bb720ca487ca3 Mon Sep 17 00:00:00 2001
From: Thomas Preud'homme <robotux@celest.fr>
Date: Sun, 22 Jan 2012 21:18:38 +0100
Subject: [PATCH] Error out when assigning void value.
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tcc should now error out when compiling code like:

VOID ExitProcess(UINT uExitCode);
(…)
retCode = ExitProcess(pi.dwProcessId);
---
 tccgen.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tccgen.c b/tccgen.c
index dc67f028..3cf37155 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -2258,6 +2258,8 @@ static void gen_assign_cast(CType *dt)
     st = &vtop->type; /* source type */
     dbt = dt->t & VT_BTYPE;
     sbt = st->t & VT_BTYPE;
+    if (sbt == VT_VOID)
+        tcc_error("Cannot assign void value");
     if (dt->t & VT_CONSTANT)
         tcc_warning("assignment of read-only location");
     switch(dbt) {