1 /* $NetBSD: msg_367.c,v 1.3 2024/08/31 06:57:31 rillig Exp $ */ 2 # 3 "msg_367.c" 3 4 // Test for message: empty description in '%.*s' [367] 5 6 /* 7 * Each bit or field or comparison value gets a description. If such a 8 * description is empty, the generated output will contain empty angle 9 * brackets or multiple adjacent commas or commas adjacent to an angle 10 * bracket, such as '<,,,,>'. 11 */ 12 13 /* lint1-extra-flags: -X 351 */ 14 15 typedef typeof(sizeof(0)) size_t; 16 typedef unsigned long long uint64_t; 17 18 int snprintb(char *, size_t, const char *, uint64_t); 19 20 void 21 old_style(unsigned u32) 22 { 23 char buf[64]; 24 25 /* expect+10: warning: empty description in '\001' [367] */ 26 /* expect+9: warning: empty description in '\002' [367] */ 27 /* expect+8: warning: empty description in '\003' [367] */ 28 /* expect+7: warning: empty description in '\004' [367] */ 29 snprintb(buf, sizeof(buf), 30 "\020" 31 "\001" 32 "\002" 33 "\003" 34 "\004", 35 u32); 36 37 /* expect+10: warning: empty description in '\001' [367] */ 38 /* expect+9: warning: empty description in '\002' [367] */ 39 /* expect+8: warning: empty description in '\003' [367] */ 40 /* expect+7: warning: empty description in '\004' [367] */ 41 snprintb(buf, sizeof(buf), 42 "\020" 43 "\001" "" "" 44 "\002" "" "" 45 "\003" "" "" 46 "\004" "" "", 47 u32); 48 49 // Single-letter descriptions are not empty. 50 snprintb(buf, sizeof(buf), 51 "\020" 52 "\001a" 53 "\002b" 54 "\003c" 55 "\004d", 56 u32); 57 } 58 59 void 60 new_style(uint64_t u64) 61 { 62 char buf[64]; 63 64 /* expect+4: warning: empty description in 'b\000\0' [367] */ 65 snprintb(buf, sizeof(buf), 66 "\177\020" 67 "b\000\0", 68 u64); 69 70 /* expect+4: warning: empty description in 'f\000\010\0' [367] */ 71 snprintb(buf, sizeof(buf), 72 "\177\020" 73 "f\000\010\0", 74 u64); 75 76 // No warning, as 'F' does not take a description. 77 // If there were a description, it would simply be skipped. 78 snprintb(buf, sizeof(buf), 79 "\177\020" 80 "F\000\010\0", 81 u64); 82 83 /* expect+4: warning: empty description in '=\000\0' [367] */ 84 snprintb(buf, sizeof(buf), 85 "\177\020" 86 "=\000\0", 87 u64); 88 89 /* expect+4: warning: empty description in ':\000\0' [367] */ 90 snprintb(buf, sizeof(buf), 91 "\177\020" 92 ":\000\0", 93 u64); 94 95 /* expect+4: warning: empty description in '*\0' [367] */ 96 snprintb(buf, sizeof(buf), 97 "\177\020" 98 "*\0", 99 u64); 100 101 // Single-letter descriptions are not empty. 102 snprintb(buf, sizeof(buf), 103 "\177\020" 104 "b\000b\0" 105 "f\001\001f\0" 106 "F\002\002F\0" 107 "=\000z\0" 108 ":\001o\0" 109 "*d\0", 110 u64 >> 1); 111 112 /* expect+6: warning: empty description in 'b\001""""""\0' [367] */ 113 /* expect+5: warning: empty description in 'b\003""""""\0' [367] */ 114 snprintb(buf, sizeof(buf), 115 "\177\020" 116 "b\001" "" "" "\0" 117 "b\003" "" "" "\0", 118 u64); 119 } 120