Home | History | Annotate | Line # | Download | only in lint1 
      1 /*	$NetBSD: msg_222.c,v 1.8 2024/12/15 07:43:53 rillig Exp $	*/
      2 # 3 "msg_222.c"
      3 
      4 // Test for message: conversion of negative constant %lld to unsigned type '%s' [222]
      5 //
      6 // See also:
      7 //	msg_162.c: comparison of unsigned type with negative constant
      8 //	msg_164.c: assignment of negative constant to unsigned type
      9 //	msg_221.c: initialization of unsigned type with negative constant
     10 //	msg_296.c: conversion of negative constant to unsigned type in call
     11 
     12 /* lint1-extra-flags: -X 351 */
     13 
     14 unsigned int u32;
     15 signed char sc;
     16 unsigned char uc;
     17 _Bool b;
     18 
     19 
     20 void
     21 convert_negative_constant(void)
     22 {
     23 	u32 = !-8;
     24 	u32 = ~-8;
     25 	/* expect+1: warning: assignment of negative constant -8 to unsigned type 'unsigned int' [164] */
     26 	u32 = +-8;
     27 	u32 = - -8;
     28 
     29 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     30 	u32 = u32 * -8;
     31 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     32 	u32 = -8 * u32;
     33 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     34 	u32 = u32 / -8;
     35 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     36 	u32 = -8 / u32;
     37 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     38 	u32 = u32 % -8;
     39 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     40 	u32 = -8 / u32;
     41 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     42 	u32 = u32 + -8;
     43 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     44 	u32 = -8 + u32;
     45 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     46 	u32 = u32 - -8;
     47 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     48 	u32 = -8 - u32;
     49 	/* expect+1: warning: negative shift [121] */
     50 	u32 = u32 << -8;
     51 	u32 = -8 << u32;
     52 	/* expect+1: warning: negative shift [121] */
     53 	u32 = u32 >> -8;
     54 	u32 = -8 >> u32;
     55 
     56 	/* expect+1: warning: operator '<' compares 'unsigned int' with 'negative constant' [162] */
     57 	b = u32 < -8;
     58 	/* expect+1: warning: operator '<=' compares 'unsigned int' with 'negative constant' [162] */
     59 	b = u32 <= -8;
     60 	/* expect+1: warning: operator '>' compares 'unsigned int' with 'negative constant' [162] */
     61 	b = u32 > -8;
     62 	/* expect+1: warning: operator '>=' compares 'unsigned int' with 'negative constant' [162] */
     63 	b = u32 >= -8;
     64 	/* expect+1: warning: operator '==' compares 'unsigned int' with 'negative constant' [162] */
     65 	b = u32 == -8;
     66 	/* expect+1: warning: operator '!=' compares 'unsigned int' with 'negative constant' [162] */
     67 	b = u32 != -8;
     68 
     69 	u32 = u32 & -8;
     70 	u32 = u32 ^ -8;
     71 	u32 = u32 | -8;
     72 	b = u32 && -8;
     73 	b = u32 || -8;
     74 
     75 	/* expect+1: warning: assignment of negative constant -8 to unsigned type 'unsigned int' [164] */
     76 	u32 = -8;
     77 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     78 	u32 *= -8;
     79 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     80 	u32 /= -8;
     81 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     82 	u32 %= -8;
     83 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     84 	u32 += -8;
     85 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     86 	u32 -= -8;
     87 	// XXX: missing 'negative shift' warning
     88 	u32 <<= -8;
     89 	// XXX: missing 'negative shift' warning
     90 	u32 >>= -8;
     91 	u32 &= -8;
     92 	/* expect+1: warning: conversion of negative constant -8 to unsigned type 'unsigned int' [222] */
     93 	u32 ^= -8;
     94 	u32 |= -8;
     95 
     96 	sc += 'A' - 'a';
     97 	sc -= 'A' - 'a';
     98 
     99 	// XXX: It's perfectly fine to effectively subtract a constant from
    100 	// XXX: an unsigned type.
    101 	/* expect+1: warning: conversion of negative constant -32 to unsigned type 'unsigned char' [222] */
    102 	uc += 'A' - 'a';
    103 	/* expect+1: warning: conversion of negative constant -32 to unsigned type 'unsigned char' [222] */
    104 	uc -= 'A' - 'a';
    105 }
    106