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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.)
This commit is contained in:
rillig 2021-01-02 15:55:54 +00:00
parent 588c4b5800
commit 9a83ddef77
2 changed files with 67 additions and 4 deletions
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52
tests/usr.bin/xlint/lint1/msg_035.c
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@ -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;
};

19
tests/usr.bin/xlint/lint1/msg_035.exp
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@ -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]