From: johanknol <johanknol@4a8a32a2-be11-0410-ad9d-d568d2c75423>
Date: Tue, 18 Feb 2003 09:54:30 +0000 (+0000)
Subject: bad shift right 12
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=2f6182c2e008dfe9d1ce2f4c3037b2638021f4db;p=fw%2Fsdcc

bad shift right 12


git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@2280 4a8a32a2-be11-0410-ad9d-d568d2c75423
---

diff --git a/support/regression/tests/bug-607243.c b/support/regression/tests/bug-607243.c
new file mode 100644
index 00000000..00ed648d
--- /dev/null
+++ b/support/regression/tests/bug-607243.c
@@ -0,0 +1,16 @@
+/* bad shift right 12 */
+
+#include <testfwk.h>
+
+typedef unsigned int u16_t; 
+
+struct myhdr { u16_t x; } h, *p; 
+
+#define NTOHS(n) (((((u16_t)(n) & 0xff)) << 8) | (((u16_t)(n) & 0xff00) >> 8)) 
+#define IPH_V(hdr) ((u16_t)NTOHS((hdr)->x) >> 12) 
+
+void foo(void) { 
+  p = &h; 
+  p->x = 0x45; 
+  ASSERT(IPH_V(p)==4);
+}