libast: sfmode: tweak for 64-bit (Solaris 140-MAP_TYPE_64_Bits)

This upstreams a Solaris patch: https://github.com/oracle/solaris-userland/blob/master/components/ksh93/patches/140-MAP_TYPE_64_Bits.patch src/lib/libast/sfio/sfmode.c: _sfmode(): - Do not turn off mmap on 64-bit systems.
ksh93 · Jan 9, 2021 · 37637ab · 37637ab
1 parent aa7713c
commit 37637ab
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/lib/libast/sfio/sfmode.c b/src/lib/libast/sfio/sfmode.c
@@ -404,7 +404,7 @@ reg int		local;	/* a local call */
 
 	if(f->mode&SF_GETR)
 	{	f->mode &= ~SF_GETR;
-#ifdef MAP_TYPE
+#if defined(MAP_TYPE) && (_ptr_bits < 64)
 		if((f->bits&SF_MMAP) && (f->tiny[0] += 1) >= (4*SF_NMAP) )
 		{	/* turn off mmap to avoid page faulting */
 			sfsetbuf(f,(Void_t*)f->tiny,(size_t)SF_UNBOUND);