testcase where tarval problems manifestated

[r15819]

diff --git a/ir/be/test/fehler77.c b/ir/be/test/fehler77.c
new file mode 100644 (file)
index 0000000..7ff8a3a
--- /dev/null
+++ b/ir/be/test/fehler77.c
@@ -0,0 +1,7 @@
+unsigned char k;
+
+int main(void) {
+       /* should result in a decb k x86 instruction */
+       --k;
+       return 0;
+}