[src/trunk]: src/usr.bin/make make(1): demonstrate wrong return value in Cond...

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

details:   https://anonhg.NetBSD.org/src/rev/8263d21af405
branches:  trunk
changeset: 950184:8263d21af405
user:      rillig <rillig%NetBSD.org@localhost>
date:      Tue Jan 19 17:49:13 2021 +0000

description:
make(1): demonstrate wrong return value in CondParser_Term

diffstat:

 usr.bin/make/cond.c                             |  10 ++++++++--
 usr.bin/make/unit-tests/cond-op-not.exp         |   5 ++++-
 usr.bin/make/unit-tests/cond-op-not.mk          |   9 ++++++++-
 usr.bin/make/unit-tests/cond-op-parentheses.exp |   6 +++++-
 usr.bin/make/unit-tests/cond-op-parentheses.mk  |  19 ++++++++++++++++++-
 5 files changed, 43 insertions(+), 6 deletions(-)

diffs (108 lines):

diff -r c48505807fdf -r 8263d21af405 usr.bin/make/cond.c
--- a/usr.bin/make/cond.c       Tue Jan 19 14:39:20 2021 +0000
+++ b/usr.bin/make/cond.c       Tue Jan 19 17:49:13 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cond.c,v 1.235 2021/01/10 21:20:46 rillig Exp $        */
+/*     $NetBSD: cond.c,v 1.236 2021/01/19 17:49:13 rillig Exp $        */
 
 /*
  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@@ -95,7 +95,7 @@
 #include "dir.h"
 
 /*     "@(#)cond.c     8.2 (Berkeley) 1/2/94"  */
-MAKE_RCSID("$NetBSD: cond.c,v 1.235 2021/01/10 21:20:46 rillig Exp $");
+MAKE_RCSID("$NetBSD: cond.c,v 1.236 2021/01/19 17:49:13 rillig Exp $");
 
 /*
  * The parsing of conditional expressions is based on this grammar:
@@ -949,6 +949,12 @@
                        t = TOK_TRUE;
                }
        }
+
+       /*
+        * FIXME: Can at least return TOK_AND, TOK_OR, TOK_RPAREN, maybe
+        *  others as well.
+        */
+       /* TODO: assert(t == TOK_ERROR); */
        return t;
 }
 
diff -r c48505807fdf -r 8263d21af405 usr.bin/make/unit-tests/cond-op-not.exp
--- a/usr.bin/make/unit-tests/cond-op-not.exp   Tue Jan 19 14:39:20 2021 +0000
+++ b/usr.bin/make/unit-tests/cond-op-not.exp   Tue Jan 19 17:49:13 2021 +0000
@@ -3,4 +3,7 @@
 make: "cond-op-not.mk" line 41: Not 0 evaluates to true.
 make: "cond-op-not.mk" line 49: Not 1 evaluates to false.
 make: "cond-op-not.mk" line 55: Not word evaluates to false.
-exit status 0
+make: "cond-op-not.mk" line 59: Malformed conditional (!)
+make: Fatal errors encountered -- cannot continue
+make: stopped in unit-tests
+exit status 1
diff -r c48505807fdf -r 8263d21af405 usr.bin/make/unit-tests/cond-op-not.mk
--- a/usr.bin/make/unit-tests/cond-op-not.mk    Tue Jan 19 14:39:20 2021 +0000
+++ b/usr.bin/make/unit-tests/cond-op-not.mk    Tue Jan 19 17:49:13 2021 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: cond-op-not.mk,v 1.6 2020/11/15 14:58:14 rillig Exp $
+# $NetBSD: cond-op-not.mk,v 1.7 2021/01/19 17:49:13 rillig Exp $
 #
 # Tests for the ! operator in .if conditions, which negates its argument.
 
@@ -55,5 +55,12 @@
 .  info Not word evaluates to false.
 .endif
 
+# A single exclamation mark is a parse error.
+.if !
+.  error
+.else
+.  error
+.endif
+
 all:
        @:;
diff -r c48505807fdf -r 8263d21af405 usr.bin/make/unit-tests/cond-op-parentheses.exp
--- a/usr.bin/make/unit-tests/cond-op-parentheses.exp   Tue Jan 19 14:39:20 2021 +0000
+++ b/usr.bin/make/unit-tests/cond-op-parentheses.exp   Tue Jan 19 17:49:13 2021 +0000
@@ -1,2 +1,6 @@
 make: "cond-op-parentheses.mk" line 13: Parentheses can be nested at least to depth 112.
-exit status 0
+make: "cond-op-parentheses.mk" line 19: Malformed conditional (()
+make: "cond-op-parentheses.mk" line 29: Malformed conditional ())
+make: Fatal errors encountered -- cannot continue
+make: stopped in unit-tests
+exit status 1
diff -r c48505807fdf -r 8263d21af405 usr.bin/make/unit-tests/cond-op-parentheses.mk
--- a/usr.bin/make/unit-tests/cond-op-parentheses.mk    Tue Jan 19 14:39:20 2021 +0000
+++ b/usr.bin/make/unit-tests/cond-op-parentheses.mk    Tue Jan 19 17:49:13 2021 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: cond-op-parentheses.mk,v 1.3 2020/11/15 14:58:14 rillig Exp $
+# $NetBSD: cond-op-parentheses.mk,v 1.4 2021/01/19 17:49:13 rillig Exp $
 #
 # Tests for parentheses in .if conditions.
 
@@ -15,5 +15,22 @@
 .  error
 .endif
 
+# An unbalanced opening parenthesis is a parse error.
+.if (
+.  error
+.else
+.  error
+.endif
+
+# An unbalanced closing parenthesis is a parse error.
+#
+# As of 2021-01-19, CondParser_Term returned TOK_RPAREN even though this
+# function promised to only ever return TOK_TRUE, TOK_FALSE or TOK_ERROR.
+.if )
+.  error
+.else
+.  error
+.endif
+
 all:
        @:;