Restore check_thunks error message.

public/asm/asm.c

@@ -4,6 +4,8 @@
 #define _GNU_SOURCE
 #include <dlfcn.h>
 #include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
 
 #define REG_EAX			0
 #define REG_ECX			1
@@ -23,9 +25,7 @@
 */
 void check_thunks(unsigned char *dest, unsigned char *pc)
 {
-#if defined WIN32
-	return;
-#else
+#ifndef WIN32
 	/* Step write address back 4 to the start of the function address */
 	unsigned char *writeaddr = dest - 4;
 	unsigned char *calloffset = *(unsigned char **)writeaddr;
@@ -62,6 +62,10 @@ void check_thunks(unsigned char *dest, unsigned char *pc)
 			}
 		default:
 			{
+				printf("Unknown thunk: %c\n", *(calladdr+1));
+#ifndef NDEBUG
+				abort();
+#endif
 				break;
 			}
 		}
@@ -78,8 +82,6 @@ void check_thunks(unsigned char *dest, unsigned char *pc)
 		*(void **)writeaddr = (void *)pc;
 		writeaddr += 4;
 	}
-
-	return;
 #endif
 }