diff --git a/compiler-rt/lib/profile/InstrProfilingFile.c b/compiler-rt/lib/profile/InstrProfilingFile.c
index 779a682..2f77e31 100644
--- a/compiler-rt/lib/profile/InstrProfilingFile.c
+++ b/compiler-rt/lib/profile/InstrProfilingFile.c
@@ -8,10 +8,13 @@
 \*===----------------------------------------------------------------------===*/
 
 #include "InstrProfiling.h"
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
+#define UNCONST(ptr) ((void *)(uintptr_t)(ptr))
+
 static int writeFile(FILE *File) {
   /* Match logic in __llvm_profile_write_buffer(). */
   const __llvm_profile_data *DataBegin = __llvm_profile_data_begin();
@@ -75,7 +78,7 @@
 
 static void setFilename(const char *Filename, int OwnsFilename) {
   if (__llvm_profile_OwnsFilename)
-    free((char *)__llvm_profile_CurrentFilename);
+    free(UNCONST(__llvm_profile_CurrentFilename));
 
   __llvm_profile_CurrentFilename = Filename;
   __llvm_profile_OwnsFilename = OwnsFilename;