sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 52 insertions, 0 deletions

diff --git a/support/regression/tests/bug-2368.c b/support/regression/tests/bug-2368.c
new file mode 100644
index 0000000..a035566
--- /dev/null
+++ b/support/regression/tests/bug-2368.c
@@ -0,0 +1,52 @@
+/* bug-2368.c
+   Wrong byte order in optimization of pointer assignment for stm8
+ */
+
+#include <testfwk.h>
+#include <stdint.h>
+
+#ifdef __SDCC
+#pragma std_c99
+#endif
+
+#if defined (__SDCC_stm8) || defined (__SDCC_z80)
+
+#define TEST_VAL 0x1234
+#define loc ((volatile uint16_t *) 0x7fd)
+
+volatile uint16_t *p = loc;
+
+void foo1 (void)
+{
+  *p = TEST_VAL;
+}
+
+void foo2 (void)
+{
+  *loc = TEST_VAL;
+}
+
+#endif
+
+void testBug (void)
+{
+#if defined (__SDCC_stm8) || defined (__SDCC_z80)
+  volatile uint16_t *q = loc;
+
+  foo1 ();
+  ASSERT (*loc == TEST_VAL);
+  ASSERT (*p == TEST_VAL);
+  ASSERT (*q == TEST_VAL);
+
+  foo2 ();
+  ASSERT (*loc == TEST_VAL);
+  ASSERT (*p == TEST_VAL);
+  ASSERT (*q == TEST_VAL);
+
+  *q = TEST_VAL;
+  ASSERT (*loc == TEST_VAL);
+  ASSERT (*p == TEST_VAL);
+  ASSERT (*q == TEST_VAL);
+
+#endif
+}