[src/trunk]: src/tests/usr.bin/xlint/lint1 lint: add test for message 35: ill...

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

details:   https://anonhg.NetBSD.org/src/rev/bec479f05a9e
branches:  trunk
changeset: 949135:bec479f05a9e
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sat Jan 02 15:55:54 2021 +0000

description:
lint: add test for message 35: illegal bit-field type

Bug: _Bool is not accepted as a bit-field, but it should be.

Bug: lint aborts in a controlled manner with message "common/tyname.c,
190: tspec_name(0)" when it sees a declaration of a _Complex bit-field.
(Not that a _Complex bit-field would make any sense.)

diffstat:

 tests/usr.bin/xlint/lint1/msg_035.c   |  52 ++++++++++++++++++++++++++++++++--
 tests/usr.bin/xlint/lint1/msg_035.exp |  19 ++++++++++++-
 2 files changed, 67 insertions(+), 4 deletions(-)

diffs (83 lines):

diff -r 9e64cf4881a1 -r bec479f05a9e tests/usr.bin/xlint/lint1/msg_035.c
--- a/tests/usr.bin/xlint/lint1/msg_035.c       Sat Jan 02 12:39:33 2021 +0000
+++ b/tests/usr.bin/xlint/lint1/msg_035.c       Sat Jan 02 15:55:54 2021 +0000
@@ -1,7 +1,53 @@
-/*     $NetBSD: msg_035.c,v 1.1 2021/01/02 10:22:43 rillig Exp $       */
+/*     $NetBSD: msg_035.c,v 1.2 2021/01/02 15:55:54 rillig Exp $       */
 # 3 "msg_035.c"
 
 // Test for message: illegal bit-field type [35]
 
-TODO: "Add example code that triggers the above message."
-TODO: "Add example code that almost triggers the above message."
+typedef struct {
+       int dummy;
+} example_struct;
+
+typedef union {
+       int dummy;
+} example_union;
+
+typedef enum {
+       NO, YES
+} example_enum;
+
+typedef void (example_function)(int, const char *);
+
+/* Try all types from tspec_t. */
+struct example {
+       signed signed_flag: 1;
+       unsigned unsigned_flag: 1;
+       _Bool boolean_flag: 1;          // FIXME: allowed since C99 6.7.2.1p5
+       char char_flag: 1;
+       signed char signed_char_flag: 1;
+       unsigned char unsigned_char_flag: 1;
+       short short_flag: 1;
+       unsigned short unsigned_short_flag: 1;
+       int int_flag: 1;
+       unsigned int unsigned_int_flag: 1;
+       long long_flag: 1;
+       unsigned long unsigned_long_flag: 1;
+       long long long_long_flag: 1;
+       unsigned long long unsigned_long_long_flag: 1;
+       /* __int128_t omitted since it is not always defined */
+       /* __uint128_t omitted since it is not always defined */
+       float float_flag: 1;
+       double double_flag: 1;
+       long double long_double_flag: 1;
+       void void_flag: 1;
+       example_struct struct_flag: 1;
+       example_union union_flag: 1;
+       example_enum enum_flag: 1;
+       void *pointer_flag: 1;
+       unsigned int array_flag[4]: 1;
+       example_function function_flag: 1;
+// FIXME: aborts:      _Complex complex_flag: 1;
+       _Complex complex_flag: 1;
+       float _Complex float_complex_flag: 1;
+       double _Complex double_complex_flag: 1;
+       long double _Complex long_double_complex_flag: 1;
+};
diff -r 9e64cf4881a1 -r bec479f05a9e tests/usr.bin/xlint/lint1/msg_035.exp
--- a/tests/usr.bin/xlint/lint1/msg_035.exp     Sat Jan 02 12:39:33 2021 +0000
+++ b/tests/usr.bin/xlint/lint1/msg_035.exp     Sat Jan 02 15:55:54 2021 +0000
@@ -1,1 +1,18 @@
-msg_035.c(6): syntax error ':' [249]
+msg_035.c(24): warning: illegal bit-field type [35]
+msg_035.c(32): warning: illegal bit-field type [35]
+msg_035.c(33): warning: illegal bit-field type [35]
+msg_035.c(34): warning: illegal bit-field type [35]
+msg_035.c(35): warning: illegal bit-field type [35]
+msg_035.c(38): warning: illegal bit-field type [35]
+msg_035.c(39): warning: illegal bit-field type [35]
+msg_035.c(40): warning: illegal bit-field type [35]
+msg_035.c(41): void type for void_flag [19]
+msg_035.c(41): zero size bit-field [37]
+msg_035.c(42): warning: illegal bit-field type [35]
+msg_035.c(43): warning: illegal bit-field type [35]
+msg_035.c(45): warning: illegal bit-field type [35]
+msg_035.c(46): warning: illegal bit-field type [35]
+msg_035.c(47): warning: illegal bit-field type [35]
+msg_035.c(49): warning: illegal bit-field type [35]
+msg_035.c(50): warning: illegal bit-field type [35]
+msg_035.c(51): warning: illegal bit-field type [35]