sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 42 insertions, 0 deletions

diff --git a/support/regression/tests/bug-2448.c b/support/regression/tests/bug-2448.c
new file mode 100644
index 0000000..78f0633
--- /dev/null
+++ b/support/regression/tests/bug-2448.c
@@ -0,0 +1,42 @@
+/*
+   bug-2448.c
+*/
+
+#include <testfwk.h>
+
+typedef unsigned char BYTE;
+typedef unsigned int WORD;
+
+volatile BYTE MYDAT[8];
+
+#define MAKEWORD(msb, lsb) (((WORD) (msb) << 8) | (lsb))
+
+#define SETUP_VALUE() MAKEWORD (MYDAT[3], MYDAT[2])
+#define SETUP_INDEX() MAKEWORD (MYDAT[5], MYDAT[4])
+#define SETUP_LENGTH() MAKEWORD (MYDAT[7], MYDAT[6])
+
+WORD badfunc (BYTE cmd)
+{
+    WORD val = SETUP_VALUE();
+    WORD idx = SETUP_INDEX();
+    WORD len = SETUP_LENGTH();
+    volatile WORD r = val + idx + len; 
+
+    if (cmd == 0)
+      return len;
+    else
+      return 0;
+}
+
+void testBug (void)
+{
+  MYDAT[2] = 10; // val
+  MYDAT[3] = 0;
+  MYDAT[4] = 11; // idx
+  MYDAT[5] = 0;
+  MYDAT[6] = 12; // len
+  MYDAT[7] = 0;
+
+  ASSERT (badfunc (0) == 12);
+  ASSERT (badfunc (1) == 0);
+}