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msg_363.c revision 1.7 
      1 /*	$NetBSD: msg_363.c,v 1.7 2024/11/05 06:23:04 rillig Exp $	*/
      2 # 3 "msg_363.c"
      3 
      4 // Test for message: escaped character '%.*s' in description of conversion '%.*s' [363]
      5 
      6 /*
      7  * The purpose of snprintb is to produce a printable, visible representation
      8  * of a binary number, therefore the description should consist of simple
      9  * characters only, and these should not need to be escaped.  If they are,
     10  * it's often due to a typo, such as a missing terminating '\0'.
     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_description(unsigned u32)
     22 {
     23 	char buf[64];
     24 
     25 	/* expect+6: warning: bit position '\t' in '\tprint' should be escaped as octal or hex [369] */
     26 	/* expect+5: warning: escaped character '\377' in description of conversion '\nable\377' [363] */
     27 	/* expect+4: warning: bit position '\n' in '\nable\377' should be escaped as octal or hex [369] */
     28 	snprintb(buf, sizeof(buf),
     29 	    "\020"
     30 	    "\001non\tprint\nable\377",
     31 	    u32);
     32 
     33 	// In the new format, the description can technically contain
     34 	// arbitrary characters, but having non-printable characters would
     35 	// produce confusing output, so any escaped characters are suspicious
     36 	// of being unintended.
     37 	/* expect+6: warning: escaped character '\t' in description of conversion 'b\000non\t' [363] */
     38 	/* expect+5: warning: escaped character '\n' in description of conversion 'b\000non\tprint\n' [363] */
     39 	/* expect+4: warning: escaped character '\377' in description of conversion 'b\000non\tprint\nable\377' [363] */
     40 	snprintb(buf, sizeof(buf),
     41 	    "\177\020"
     42 	    "b\000non\tprint\nable\377\0",
     43 	    u32);
     44 
     45 	/* expect+10: warning: escaped character '\177' in description of conversion '\002""\177' [363] */
     46 	/* expect+9: warning: escaped character '\177' in description of conversion '\003aa""""\177' [363] */
     47 	/* expect+8: warning: escaped character '\177' in description of conversion '\004""bb""\177' [363] */
     48 	/* expect+7: warning: escaped character '\177' in description of conversion '\005""""cc\177' [363] */
     49 	snprintb(buf, sizeof(buf),
     50 	    "\020"
     51 	    "\002""\177"
     52 	    "\003aa""""\177"
     53 	    "\004""bb""\177"
     54 	    "\005""""cc\177",
     55 	    u32);
     56 
     57 	/* expect+6: warning: bit position '\000' (0) in '\000print' out of range 1..32 [371] */
     58 	/* expect+5: warning: bit position '\n' in '\nable' should be escaped as octal or hex [369] */
     59 	/* expect+4: warning: redundant '\0' at the end of the format [377] */
     60 	snprintb(buf, sizeof(buf),
     61 	    "\020"
     62 	    "\001non\000print\nable\0",
     63 	    u32);
     64 }
     65