 @@ -1,14 +1,14 @@
-/*	$NetBSD: tree.c,v 1.512 2023/04/12 19:09:48 rillig Exp $	*/
+/*	$NetBSD: tree.c,v 1.513 2023/04/14 18:42:31 rillig Exp $	*/
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
  * All Rights Reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
 @@ -27,27 +27,27 @@
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #if HAVE_NBTOOL_CONFIG_H
 #include "nbtool_config.h"
 #endif
 #include <sys/cdefs.h>
 #if defined(__RCSID)
-__RCSID("$NetBSD: tree.c,v 1.512 2023/04/12 19:09:48 rillig Exp $");
+__RCSID("$NetBSD: tree.c,v 1.513 2023/04/14 18:42:31 rillig Exp $");
 #endif
 #include <float.h>
 #include <limits.h>
 #include <math.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <string.h>
 #include "lint1.h"
 typedef struct integer_constraints {
 @@ -1498,38 +1498,41 @@ fold_bool(tnode_t *tn)
+	}
 	return build_constant(tn->tn_type, v);
+}
 static ldbl_t
 floating_error_value(tspec_t t, ldbl_t lv)
+{
 	if (t == FLOAT)
 		return lv < 0 ? -FLT_MAX : FLT_MAX;
 	if (t == DOUBLE)
 		return lv < 0 ? -DBL_MAX : DBL_MAX;
 	/*
-	 * When lint is compiled on x86_64 to check for sparc64, it uses the
+	 * When NetBSD is cross-built in MKLINT=yes mode on x86_64 for
-	 * type 'long double' from x86_64, which is the Intel 80-bit format.
+	 * sparc64, tools/lint checks this code while building usr.bin/xlint.
-	 * The constant LDBL_MAX comes from the sparc64 preprocessor though
+	 * In that situation, lint uses the preprocessor for sparc64, in which
-	 * and uses the IEEE-754-binary128 format, with the same exponent
+	 * the type 'long double' is IEEE-754-binary128, affecting the macro
-	 * range but a wider mantissa.
+	 * LDBL_MAX below. The type 'long double', as well as the strtold
 	 * implementation, comes from the host platform x86_64 though, where
 	 * 'long double' consumes 128 bits as well but only uses 80 of them.
 	 * The exponent range of the two 'long double' types is the same, but
 	 * the maximum finite value differs due to the extended precision on
 	 * sparc64.
+	 *
-	 * To properly handle this situation, lint would have to implement the
+	 * To properly handle the data types of the target platform, lint
-	 * floating-point types in a platform-independent way, which is not
+	 * would have to implement the floating-point types in a
-	 * worth the effort, given how few programs practically use 'long
+	 * platform-independent way, which is not worth the effort, given how
-	 * double'.
+	 * few programs practically use 'long double'.
 	 * This caveat only affects cross builds.
 	 */
 	/* LINTED 248: floating-point constant out of range */
 	ldbl_t max = LDBL_MAX;
 	return lv < 0 ? -max : max;
+}
 /*
  * Fold constant nodes having operands with floating point type.
  */
 static tnode_t *
 fold_float(tnode_t *tn)
+{
 	val_t	*v;