[ARM] Cast string pointers to int to avoid compiler warnings.

[Christophe Lyon]

Hi,

While building newlib for ARM, I noticed that GCC complains about
implicit casts. This small patch makes them explicit, just like in
other parts of the same source file.

OK?

Christophe
-------------- next part --------------
commit e923f12ef309d1d79df7bc7c324966a9f647605b
Author: Christophe Lyon <christophe.lyon@linaro.org>
Date:   Mon Oct 1 17:22:43 2018 +0000

    [ARM] Cast string pointers to int to avoid compiler warnings.
    
    2018-10-01  Christophe Lyon  <christophe.lyon@linaro.org>
    
    	* newlib/libc/sys/arm/syscalls.c (_unlink): Cast 'path' to int.
    	(_system): Cast 's' to int.
    	(_rename): Cast 'newpath' and 'oldpath' to int.

diff --git a/newlib/libc/sys/arm/syscalls.c b/newlib/libc/sys/arm/syscalls.c
index 6d2ad79..d871464 100644
--- a/newlib/libc/sys/arm/syscalls.c
+++ b/newlib/libc/sys/arm/syscalls.c
@@ -542,7 +542,7 @@ _unlink (const char *path __attribute__ ((unused)))
 {
 #ifdef ARM_RDI_MONITOR
   int block[2];
-  block[0] = path;
+  block[0] = (int) path;
   block[1] = strlen(path);
   return wrap (do_AngelSWI (AngelSWI_Reason_Remove, block)) ? -1 : 0;
 #else
@@ -635,7 +635,7 @@ _system (const char *s)
      meaning to its return value.  Try to do something reasonable....  */
   if (!s)
     return 1;  /* maybe there is a shell available? we can hope. :-P */
-  block[0] = s;
+  block[0] = (int) s;
   block[1] = strlen (s);
   e = wrap (do_AngelSWI (AngelSWI_Reason_System, block));
   if ((e >= 0) && (e < 256))
@@ -662,9 +662,9 @@ _rename (const char * oldpath, const char * newpath)
 {
 #ifdef ARM_RDI_MONITOR
   int block[4];
-  block[0] = oldpath;
+  block[0] = (int) oldpath;
   block[1] = strlen(oldpath);
-  block[2] = newpath;
+  block[2] = (int) newpath;
   block[3] = strlen(newpath);
   return wrap (do_AngelSWI (AngelSWI_Reason_Rename, block)) ? -1 : 0;
 #else