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annotate gcc/testsuite/gcc.dg/Wtype-limits-Wextra.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children 1830386684a0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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111
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1 /* Test that -Wtype-limits is enabled by -Wextra */
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2 /* { dg-do compile } */
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3 /* { dg-excess-errors "short=int" { target { avr-*-* } } } */
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4 /* { dg-options "-Wextra" } */
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5
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6 void a (unsigned char x)
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7 {
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8 if (x < 0) return;/* { dg-warning "comparison is always false due to limited range of data type" } */
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9 if (x >= 0) return;/* { dg-warning "comparison is always true due to limited range of data type" } */
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10 if (0 > x) return;/* { dg-warning "comparison is always false due to limited range of data type" } */
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11 if (0 <= x) return;/* { dg-warning "comparison is always true due to limited range of data type" } */
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12 if (x <= 255) /* { dg-warning "comparison is always true due to limited range of data type" } */
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13 return;
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14 if (255 >= x) /* { dg-warning "comparison is always true due to limited range of data type" } */
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15 return;
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16 if ((int)x <= 255) /* { dg-bogus "comparison is always true due to limited range of data type" "" { xfail *-*-* } } */
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17 return;
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18 if (255 >= (unsigned char) 1)
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19 return;
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20
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21 }
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22
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23 void b (unsigned short x)
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24 { /* { dg-warning "comparison of unsigned expression < 0 is always false" "" { target { ! int32plus } } .+1 } */
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25 if (x < 0) return;/* { dg-warning "comparison is always false due to limited range of data type" "" { target { int32plus } } } */
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26 /* { dg-warning "comparison of unsigned expression >= 0 is always true" "" { target { ! int32plus } } .+1 } */
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27 if (x >= 0) return;/* { dg-warning "comparison is always true due to limited range of data type" "" { target { int32plus } } } */
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28 /* { dg-warning "comparison of unsigned expression < 0 is always false" "" { target { ! int32plus } } .+1 } */
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29 if (0 > x) return;/* { dg-warning "comparison is always false due to limited range of data type" "" { target { int32plus } } } */
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30 /* { dg-warning "comparison of unsigned expression >= 0 is always true" "" { target { ! int32plus } } .+1 } */
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31 if (0 <= x) return;/* { dg-warning "comparison is always true due to limited range of data type" "" { target { int32plus } } } */
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32 }
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33
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34 void c (unsigned int x)
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35 {
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36 if (x < 0) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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37 if (x >= 0) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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38 if (0 > x) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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39 if (0 <= x) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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40 if (1U >= 0) return;
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41 if (1U < 0) return;
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42 if (0 <= 1U) return;
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43 if (0 > 1U) return;
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44 }
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45
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46 void d (unsigned long x)
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47 {
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48 if (x < 0) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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49 if (x >= 0) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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50 if (0 > x) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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51 if (0 <= x) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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52 }
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53
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54 void e (unsigned long long x)
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55 {
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56 if (x < 0) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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57 if (x >= 0) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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58 if (0 > x) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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59 if (0 <= x) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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60 }
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61
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62 int test (int x)
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63 {
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64 if ((long long)x <= 0x123456789ABCLL) /* { dg-bogus "comparison is always true due to limited range of data type" "" { xfail *-*-* } } */
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65 return 1;
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66 else
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67 return 0;
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68 }
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69
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70