* errno.cc (errmap): Map ERROR_INVALID_ADDRESS to new errno code

EOVERFLOW.
	(_sys_errlist): Add entries for EILSEQ and EOVERFLOW.
	(strerror): Ditto.
	* mmap.cc (map_map): Set errno in case of error.
	(mmap64): Remove setting errno explicitely to ENOMEM.

winsup/cygwin/errno.cc

@@ -112,6 +112,7 @@ errmap[] =
   X (DISK_FULL,			ENOSPC),
   X (NOACCESS,			EFAULT),
   X (FILE_INVALID,		ENXIO),
+  X (INVALID_ADDRESS,		EOVERFLOW),
   { 0, NULL, 0}
 };
 
@@ -290,6 +291,8 @@ const NO_COPY char __declspec(dllexport) * const _sys_errlist[]=
 /* ENOMEDIUM 135 */ "no medium",
 /* ENOSHARE 136 */   "No such host or network path",
 /* ECASECLASH 137 */ "Filename exists with different case"
+/* EILSEQ 138 */ "Illegal byte sequence"
+/* EOVERFLOW 139 */ "Value too large for defined data type"
 };
 
 extern int const NO_COPY __declspec(dllexport) _sys_nerr = sizeof (_sys_errlist) / sizeof (_sys_errlist[0]);
@@ -671,6 +674,12 @@ strerror (int errnum)
     case ECASECLASH:
       error = "Filename exists with different case";
       break;
+    case EILSEQ:
+      error = "Illegal byte sequence";
+      break;
+    case EOVERFLOW:
+      error = "Value too large for defined data type";
+      break;
     default:
 #ifdef _MT_SAFE
       char *buf= _reent_winsup ()->_strerror_buf;