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111
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1 /* PR middle-end/pr42363, extended from the test for PR middle-end/37913. */
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2 /* { dg-do compile } */
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3 /* { dg-options "-g" } */
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4
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5 void foo (void) __attribute__ ((noreturn));
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6
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7 static int __attribute__ ((noreturn))
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8 bar (void)
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9 {
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10 foo ();
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11 }
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12
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13 int
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14 baz (void)
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15 {
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16 int i = bar ();
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17 return i + 1;
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18 }
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19
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20 int fooz (void) __attribute__ ((noreturn));
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21
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22 static int __attribute__ ((noreturn))
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23 bart (void)
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24 {
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25 return fooz (); /* { dg-warning "noreturn" } */
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26 }
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27
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28 int bazr (void)
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29 {
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30 int i = bart ();
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31 return i + 1;
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32 }
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33
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34 static inline int
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35 bard (void)
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36 {
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37 return fooz ();
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38 }
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39
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40 int bizr (void)
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41 {
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42 int i, j;
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43
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44 i = j = bard ();
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45
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46 return i + 1;
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47 }
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48
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131
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49 /* This might be regarded as pure and folded, rather than inlined,
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50 but because it's pure evil it's diagnosed and the noreturn attribute
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51 is dropped. The const attribute is dropped as well because it's
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52 mutually exclusive with pure. */
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111
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53 static int __attribute__ ((pure, const, noreturn))
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131
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54 barf (void) {
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55 /* { dg-warning "ignoring attribute .const." "const" { target *-*-* } .-1 } */
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56 /* { dg-warning "ignoring attribute .noreturn." "noreturn" { target *-*-* } .-2 } */
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57
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58 /* The noreturn attribute is ignored so verify there is no warning
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59 for returning from the function:
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60 { dg-bogus "does return" } */
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61 }
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111
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62
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63 static int __attribute__ ((pure, const))
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131
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64 bark (void) { /* { dg-warning "ignoring attribute .const." } */
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111
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65 barf ();
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66 }
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67
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68 int buzr (void)
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69 {
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70 int i, j;
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71
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72 i = j = bark () + bark ();
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73
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74 return i + 1;
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75 }
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76
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77 int buzt (void)
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78 {
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79 int i, j;
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80
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81 i = j = barf () + barf ();
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82
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83 return i + 1;
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84 }
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85
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86 void bust (void)
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87 {
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88 while (barf ())
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89 ;
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90 }
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