--- tcc-0.9.20.orig/bcheck.c
+++ tcc-0.9.20/bcheck.c
@@ -76,7 +76,9 @@
 
 /* currently, tcc cannot compile that because we use unsupported GNU C
    extensions */
-#if !defined(__TINYC__)
+#if defined(__TINYC__)
+#define __attribute__(ignore)
+#endif
 void *__bound_ptr_add(void *p, int offset) __attribute__((regparm(2)));
 void *__bound_ptr_indir1(void *p, int offset) __attribute__((regparm(2)));
 void *__bound_ptr_indir2(void *p, int offset) __attribute__((regparm(2)));
@@ -86,7 +88,6 @@
 void *__bound_ptr_indir16(void *p, int offset) __attribute__((regparm(2)));
 void __bound_local_new(void *p) __attribute__((regparm(1)));
 void __bound_local_delete(void *p) __attribute__((regparm(1)));
-#endif
 
 void *__bound_malloc(size_t size, const void *caller);
 void *__bound_memalign(size_t size, size_t align, const void *caller);
@@ -168,7 +169,7 @@
 
 /* return '(p + offset)' for pointer arithmetic (a pointer can reach
    the end of a region in this case */
-void *__bound_ptr_add(void *p, int offset)
+void * __attribute__((regparm(2))) __bound_ptr_add(void *p, int offset)
 {
     unsigned long addr = (unsigned long)p;
     BoundEntry *e;
@@ -194,7 +195,8 @@
 /* return '(p + offset)' for pointer indirection (the resulting must
    be strictly inside the region */
 #define BOUND_PTR_INDIR(dsize)                                          \
-void *__bound_ptr_indir ## dsize (void *p, int offset)                  \
+void * __attribute__((regparm(2))) __bound_ptr_indir ## dsize           \
+                                        (void *p, int offset)           \
 {                                                                       \
     unsigned long addr = (unsigned long)p;                              \
     BoundEntry *e;                                                      \
@@ -227,7 +229,7 @@
 #endif
 
 /* called when entering a function to add all the local regions */
-void __bound_local_new(void *p1) 
+void __attribute__((regparm(1))) __bound_local_new(void *p1) 
 {
     unsigned long addr, size, fp, *p = p1;
     GET_CALLER_FP(fp);
@@ -243,7 +245,7 @@
 }
 
 /* called when leaving a function to delete all the local regions */
-void __bound_local_delete(void *p1) 
+void __attribute__((regparm(1))) __bound_local_delete(void *p1) 
 {
     unsigned long addr, fp, *p = p1;
     GET_CALLER_FP(fp);
@@ -266,13 +268,14 @@
 {
 }
 
-void *__bound_ptr_add(void *p, int offset)
+void * __attribute__((regparm(2))) __bound_ptr_add(void *p, int offset)
 {
     return p + offset;
 }
 
 #define BOUND_PTR_INDIR(dsize)                               \
-void *__bound_ptr_indir ## dsize (void *p, int offset)       \
+void * __attribute__((regparm(2))) __bound_ptr_indir ## dsize\
+                                        (void *p, int offset)\
 {                                                            \
     return p + offset;                                       \
 }