1 /* $NetBSD: msg_358.c,v 1.3 2024/08/31 06:57:31 rillig Exp $ */ 2 # 3 "msg_358.c" 3 4 // Test for message: hex escape '%.*s' has more than 2 digits [358] 5 6 /* 7 * In the format argument of the snprintb and snprintb_m functions, a bit 8 * position or field width is written as an octal or hexadecimal escape 9 * sequence. If the description that follows starts with hex digits (A-Fa-f), 10 * these digits are still part of the escape sequence instead of the 11 * description. 12 */ 13 14 /* lint1-extra-flags: -X 351 */ 15 16 typedef typeof(sizeof(0)) size_t; 17 typedef unsigned long long uint64_t; 18 19 int snprintb(char *, size_t, const char *, uint64_t); 20 21 void 22 examples(unsigned u32, uint64_t u64) 23 { 24 char buf[64]; 25 26 /* expect+3: warning: hex escape '\x01B' has more than 2 digits [358] */ 27 snprintb(buf, sizeof(buf), 28 "\020\x01BIT", 29 u32); 30 31 /* expect+3: warning: hex escape '\x01b' has more than 2 digits [358] */ 32 snprintb(buf, sizeof(buf), 33 "\020\x01bit", 34 u32); 35 36 // This mismatch goes undetected as it has only 2 digits, does not mix 37 // case and is in bounds. A spellchecker could mark the unknown word 38 // 'ield' to give a hint. 39 snprintb(buf, sizeof(buf), 40 "\020\x1FIELD", 41 u32); 42 43 /* expect+3: warning: hex escape '\x01b' has more than 2 digits [358] */ 44 snprintb(buf, sizeof(buf), 45 "\177\020b\x01bit\0", 46 u64); 47 48 /* expect+3: warning: hex escape '\x02b' has more than 2 digits [358] */ 49 snprintb(buf, sizeof(buf), 50 "\177\020f\x00\x02bit\0", 51 u64); 52 53 // In this example from the snprintb manual page, the descriptions 54 // that start with a hexadecimal digit must be separated from the 55 // hexadecimal escape sequence for the bit position. 56 snprintb(buf, sizeof(buf), 57 "\20\x10NOTBOOT\x0f" "FPP\x0eSDVMA\x0cVIDEO" 58 "\x0bLORES\x0a" "FPA\x09" "DIAG\x07" "CACHE" 59 "\x06IOCACHE\x05LOOPBACK\x04" "DBGCACHE", 60 u32); 61 } 62