gmm_malloc.h: Only use <errno.h> and errno if __STDC_HOSTED__.

	* config/i386/gmm_malloc.h: Only use <errno.h> and errno if
	__STDC_HOSTED__.

From-SVN: r274915

gcc/ChangeLog

+2019-08-26  Gerald Pfeifer  <gerald@pfeifer.com>
+
+	* config/i386/gmm_malloc.h: Only use <errno.h> and errno if
+	__STDC_HOSTED__.
+
 2019-08-23  Mihailo Stojanovic  <mistojanovic@wavecomp.com>
 
 	* config/mips/mips.md (mips_get_fcsr, *mips_get_fcsr): Use SI

gcc/config/i386/gmm_malloc.h

@@ -25,7 +25,9 @@
 #define _MM_MALLOC_H_INCLUDED
 
 #include <stdlib.h>
+#if __STDC_HOSTED__
 #include <errno.h>
+#endif
 
 static __inline__ void * 
 _mm_malloc (size_t __size, size_t __align)
@@ -36,7 +38,9 @@ _mm_malloc (size_t __size, size_t __align)
   /* Error if align is not a power of two.  */
   if (__align & (__align - 1))
     {
+#if __STDC_HOSTED__
       errno = EINVAL;
+#endif
       return ((void *) 0);
     }