diff --git a/libc/include/link.h b/libc/include/link.h
index 0d07cb9..dd3b99f 100644
--- a/libc/include/link.h
+++ b/libc/include/link.h
@@ -28,6 +28,7 @@
 #ifndef _LINK_H_
 #define _LINK_H_
 
+#include <stdint.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>
 
@@ -55,7 +56,7 @@
 #endif
 
 #ifdef __arm__
-typedef long unsigned int* _Unwind_Ptr;
+typedef uintptr_t _Unwind_Ptr;
 _Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr, int*);
 #endif
 
diff --git a/linker/linker.cpp b/linker/linker.cpp
index f43d6fc..39062e6 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -361,16 +361,14 @@
 //
 // Intended to be called by libc's __gnu_Unwind_Find_exidx().
 _Unwind_Ptr do_dl_unwind_find_exidx(_Unwind_Ptr pc, int* pcount) {
-  uintptr_t addr = reinterpret_cast<uintptr_t>(pc);
-
   for (soinfo* si = solist_get_head(); si != 0; si = si->next) {
-    if ((addr >= si->base) && (addr < (si->base + si->size))) {
+    if ((pc >= si->base) && (pc < (si->base + si->size))) {
         *pcount = si->ARM_exidx_count;
         return reinterpret_cast<_Unwind_Ptr>(si->ARM_exidx);
     }
   }
   *pcount = 0;
-  return nullptr;
+  return 0;
 }
 
 #endif