newer version of tcc almost working

05/tcc-0.9.27/tests/asm-c-connect-2.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+
+#if defined _WIN32 && !defined __TINYC__
+# define _ "_"
+#else
+# define _
+#endif
+
+int x3(void)
+{
+    printf(" x3");
+    return 3;
+}
+
+/* That callx4 is defined globally (as if ".globl callx4")
+   is a TCC extension.  GCC doesn't behave like this.  */
+void callx4(void);
+__asm__(_"callx4: call "_"x4; ret;"
+#ifndef __TINYC__
+    " .global "_"callx4"
+#endif
+);
+
+extern void x5(void);
+
+void callx5_again(void);
+void callx5_again(void)
+{
+    x5();
+    asm("call "_"x6");
+}
+
+static void x6()
+{
+    printf(" x6-2");
+}