[src/trunk]: src/usr.bin/xlint/lint1 lint: remove compat code for lexing hex ...

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c511efbf4367
branches:  trunk
changeset: 373574:c511efbf4367
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sat Feb 18 14:32:32 2023 +0000

description:
lint: remove compat code for lexing hex floating point literals

Hex floating literals are required by C99.

diffstat:

 tests/usr.bin/xlint/lint1/lex_floating.c |   8 +++++++-
 usr.bin/xlint/lint1/lex.c                |  24 +++---------------------
 2 files changed, 10 insertions(+), 22 deletions(-)

diffs (64 lines):

diff -r f73843a6abb4 -r c511efbf4367 tests/usr.bin/xlint/lint1/lex_floating.c
--- a/tests/usr.bin/xlint/lint1/lex_floating.c  Sat Feb 18 14:04:17 2023 +0000
+++ b/tests/usr.bin/xlint/lint1/lex_floating.c  Sat Feb 18 14:32:32 2023 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: lex_floating.c,v 1.2 2022/01/15 14:22:03 rillig Exp $  */
+/*     $NetBSD: lex_floating.c,v 1.3 2023/02/18 14:32:32 rillig Exp $  */
 # 3 "lex_floating.c"
 
 /*
@@ -34,3 +34,9 @@
 {
        sinkl(2.2250738585072012e-308L);
 }
+
+void
+test_hex(void)
+{
+       sinkd(0x1.cp4);
+}
diff -r f73843a6abb4 -r c511efbf4367 usr.bin/xlint/lint1/lex.c
--- a/usr.bin/xlint/lint1/lex.c Sat Feb 18 14:04:17 2023 +0000
+++ b/usr.bin/xlint/lint1/lex.c Sat Feb 18 14:32:32 2023 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: lex.c,v 1.148 2023/02/02 22:23:30 rillig Exp $ */
+/* $NetBSD: lex.c,v 1.149 2023/02/18 14:32:32 rillig Exp $ */
 
 /*
  * Copyright (c) 1996 Christopher G. Demetriou.  All Rights Reserved.
@@ -38,7 +38,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID)
-__RCSID("$NetBSD: lex.c,v 1.148 2023/02/02 22:23:30 rillig Exp $");
+__RCSID("$NetBSD: lex.c,v 1.149 2023/02/18 14:32:32 rillig Exp $");
 #endif
 
 #include <ctype.h>
@@ -663,25 +663,7 @@
        /* TODO: Handle precision and exponents of 'long double'. */
        errno = 0;
        d = strtod(cp, &eptr);
-       if (eptr != cp + len) {
-               switch (*eptr) {
-                       /*
-                        * XXX: Non-native non-current strtod() may not
-                        * handle hex floats, ignore the rest if we find
-                        * traces of hex float syntax.
-                        */
-               case 'p':
-               case 'P':
-               case 'x':
-               case 'X':
-                       d = 0;
-                       errno = 0;
-                       break;
-               default:
-                       INTERNAL_ERROR("lex_floating_constant(%.*s)",
-                           (int)(eptr - cp), cp);
-               }
-       }
+       lint_assert(eptr == cp + len);
        if (errno != 0)
                /* floating-point constant out of range */
                warning(248);