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[src/trunk]: src/usr.bin/xlint/lint1 lint: rename val_t.v_unsigned to avoid c...
details: https://anonhg.NetBSD.org/src/rev/6e862f576cfd
branches: trunk
changeset: 1021847:6e862f576cfd
user: rillig <rillig%NetBSD.org@localhost>
date: Sun Jun 20 20:32:42 2021 +0000
description:
lint: rename val_t.v_unsigned to avoid confusion
The name v_unsigned suggested that the value would be interpreted as
unsigned, which was wrong. Whether a value is signed or unsigned is
decided by v_tspec instead.
Revert the previous commit for boolen constants since their value is
already interpreted as unsigned, and there is no need for any warning
about differences between traditional C and ANSI C since the _Bool type
has only been added ten years later in C99.
The code for printing a tree node was also confused by this struct
member, even with its old name v_ansiu. That code will be fixed in a
follow-up commit.
No functional change.
diffstat:
usr.bin/xlint/lint1/ckbool.c | 8 ++++----
usr.bin/xlint/lint1/lex.c | 6 +++---
usr.bin/xlint/lint1/lint1.h | 11 ++++++++---
usr.bin/xlint/lint1/print.c | 7 ++++---
usr.bin/xlint/lint1/tree.c | 25 +++++++++++++------------
5 files changed, 32 insertions(+), 25 deletions(-)
diffs (200 lines):
diff -r 132c2379f2e7 -r 6e862f576cfd usr.bin/xlint/lint1/ckbool.c
--- a/usr.bin/xlint/lint1/ckbool.c Sun Jun 20 19:15:58 2021 +0000
+++ b/usr.bin/xlint/lint1/ckbool.c Sun Jun 20 20:32:42 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ckbool.c,v 1.3 2021/06/20 19:15:58 rillig Exp $ */
+/* $NetBSD: ckbool.c,v 1.4 2021/06/20 20:32:42 rillig Exp $ */
/*-
* Copyright (c) 2021 The NetBSD Foundation, Inc.
@@ -36,7 +36,7 @@
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: ckbool.c,v 1.3 2021/06/20 19:15:58 rillig Exp $");
+__RCSID("$NetBSD: ckbool.c,v 1.4 2021/06/20 20:32:42 rillig Exp $");
#endif
#include <string.h>
@@ -252,7 +252,7 @@
sym->s_scl = CTCONST; /* close enough */
sym->s_type = gettyp(BOOL);
sym->s_value.v_tspec = BOOL;
- sym->s_value.v_unsigned = true;
+ sym->s_value.v_unsigned_since_c90 = false;
sym->s_value.v_quad = 0;
return true;
}
@@ -261,7 +261,7 @@
sym->s_scl = CTCONST; /* close enough */
sym->s_type = gettyp(BOOL);
sym->s_value.v_tspec = BOOL;
- sym->s_value.v_unsigned = true;
+ sym->s_value.v_unsigned_since_c90 = false;
sym->s_value.v_quad = 1;
return true;
}
diff -r 132c2379f2e7 -r 6e862f576cfd usr.bin/xlint/lint1/lex.c
--- a/usr.bin/xlint/lint1/lex.c Sun Jun 20 19:15:58 2021 +0000
+++ b/usr.bin/xlint/lint1/lex.c Sun Jun 20 20:32:42 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: lex.c,v 1.45 2021/06/20 19:04:50 rillig Exp $ */
+/* $NetBSD: lex.c,v 1.46 2021/06/20 20:32:42 rillig Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All Rights Reserved.
@@ -38,7 +38,7 @@
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: lex.c,v 1.45 2021/06/20 19:04:50 rillig Exp $");
+__RCSID("$NetBSD: lex.c,v 1.46 2021/06/20 20:32:42 rillig Exp $");
#endif
#include <ctype.h>
@@ -672,7 +672,7 @@
yylval.y_val = xcalloc(1, sizeof(*yylval.y_val));
yylval.y_val->v_tspec = typ;
- yylval.y_val->v_unsigned = ansiu;
+ yylval.y_val->v_unsigned_since_c90 = ansiu;
yylval.y_val->v_quad = (int64_t)uq;
return T_CON;
diff -r 132c2379f2e7 -r 6e862f576cfd usr.bin/xlint/lint1/lint1.h
--- a/usr.bin/xlint/lint1/lint1.h Sun Jun 20 19:15:58 2021 +0000
+++ b/usr.bin/xlint/lint1/lint1.h Sun Jun 20 20:32:42 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: lint1.h,v 1.104 2021/06/20 19:04:50 rillig Exp $ */
+/* $NetBSD: lint1.h,v 1.105 2021/06/20 20:32:42 rillig Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All Rights Reserved.
@@ -107,8 +107,13 @@
/* An integer or floating-point value. */
typedef struct {
tspec_t v_tspec;
- bool v_unsigned; /* set if an integer constant is
- unsigned in C90 and later */
+ /*
+ * Set if an integer constant is unsigned only in C90 and later, but
+ * not in traditional C.
+ *
+ * See the operators table in ops.def, columns "l r".
+ */
+ bool v_unsigned_since_c90;
union {
int64_t _v_quad; /* integers */
ldbl_t _v_ldbl; /* floats */
diff -r 132c2379f2e7 -r 6e862f576cfd usr.bin/xlint/lint1/print.c
--- a/usr.bin/xlint/lint1/print.c Sun Jun 20 19:15:58 2021 +0000
+++ b/usr.bin/xlint/lint1/print.c Sun Jun 20 20:32:42 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: print.c,v 1.13 2021/06/20 19:04:50 rillig Exp $ */
+/* $NetBSD: print.c,v 1.14 2021/06/20 20:32:42 rillig Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
@@ -35,7 +35,7 @@
#include <sys/cdefs.h>
#ifndef lint
-__RCSID("$NetBSD: print.c,v 1.13 2021/06/20 19:04:50 rillig Exp $");
+__RCSID("$NetBSD: print.c,v 1.14 2021/06/20 20:32:42 rillig Exp $");
#endif
#include <stdio.h>
@@ -63,7 +63,8 @@
break;
default:
(void)snprintf(buf, bufsiz,
- v->v_unsigned ? "%llu" : "%lld",
+ /* FIXME */
+ v->v_unsigned_since_c90 ? "%llu" : "%lld",
(unsigned long long)v->v_quad);
break;
}
diff -r 132c2379f2e7 -r 6e862f576cfd usr.bin/xlint/lint1/tree.c
--- a/usr.bin/xlint/lint1/tree.c Sun Jun 20 19:15:58 2021 +0000
+++ b/usr.bin/xlint/lint1/tree.c Sun Jun 20 20:32:42 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tree.c,v 1.288 2021/06/20 19:04:50 rillig Exp $ */
+/* $NetBSD: tree.c,v 1.289 2021/06/20 20:32:42 rillig Exp $ */
/*
* Copyright (c) 1994, 1995 Jochen Pohl
@@ -37,7 +37,7 @@
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: tree.c,v 1.288 2021/06/20 19:04:50 rillig Exp $");
+__RCSID("$NetBSD: tree.c,v 1.289 2021/06/20 20:32:42 rillig Exp $");
#endif
#include <float.h>
@@ -183,7 +183,7 @@
n->tn_type = tp;
n->tn_val = expr_zalloc(sizeof(*n->tn_val));
n->tn_val->v_tspec = tp->t_tspec;
- n->tn_val->v_unsigned = v->v_unsigned;
+ n->tn_val->v_unsigned_since_c90 = v->v_unsigned_since_c90;
n->tn_val->v_u = v->v_u;
free(v);
return n;
@@ -532,16 +532,16 @@
* ANSI C, print a warning.
*/
if (mp->m_warn_if_left_unsigned_in_c90 &&
- ln->tn_op == CON && ln->tn_val->v_unsigned) {
+ ln->tn_op == CON && ln->tn_val->v_unsigned_since_c90) {
/* ANSI C treats constant as unsigned, op %s */
warning(218, mp->m_name);
- ln->tn_val->v_unsigned = false;
+ ln->tn_val->v_unsigned_since_c90 = false;
}
if (mp->m_warn_if_right_unsigned_in_c90 &&
- rn->tn_op == CON && rn->tn_val->v_unsigned) {
+ rn->tn_op == CON && rn->tn_val->v_unsigned_since_c90) {
/* ANSI C treats constant as unsigned, op %s */
warning(218, mp->m_name);
- rn->tn_val->v_unsigned = false;
+ rn->tn_val->v_unsigned_since_c90 = false;
}
/* Make sure both operands are of the same type */
@@ -2364,7 +2364,7 @@
range_check = false;
if (nt == BOOL) { /* C99 6.3.1.2 */
- nv->v_unsigned = false;
+ nv->v_unsigned_since_c90 = false;
nv->v_quad = is_nonzero_val(v) ? 1 : 0;
return;
}
@@ -2376,13 +2376,13 @@
nv->v_quad = v->v_quad;
}
- if ((v->v_unsigned && is_floating(nt)) ||
- (v->v_unsigned && (is_integer(nt) && !is_uinteger(nt) &&
+ if ((v->v_unsigned_since_c90 && is_floating(nt)) ||
+ (v->v_unsigned_since_c90 && (is_integer(nt) && !is_uinteger(nt) &&
portable_size_in_bits(nt) >
portable_size_in_bits(ot)))) {
/* ANSI C treats constant as unsigned */
warning(157);
- v->v_unsigned = false;
+ v->v_unsigned_since_c90 = false;
}
switch (nt) {
@@ -3618,7 +3618,8 @@
if (tn->tn_op == CON) {
lint_assert(tn->tn_type->t_tspec == tn->tn_val->v_tspec);
if (is_integer(tn->tn_val->v_tspec)) {
- v->v_unsigned = tn->tn_val->v_unsigned;
+ v->v_unsigned_since_c90 =
+ tn->tn_val->v_unsigned_since_c90;
v->v_quad = tn->tn_val->v_quad;
return v;
}
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