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131
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1 /* { dg-options "-fdiagnostics-show-caret" } */
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2
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3 /* Verify that we emit a "return *this;" fix-it hint for
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4 a missing return in an assignment operator. */
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5
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6 struct s1 {
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7 s1& operator=(const s1&) { } // { dg-warning "no return statement in function returning non-void" }
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8 /* { dg-begin-multiline-output "" }
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9 s1& operator=(const s1&) { }
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10 ^
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11 return *this;
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12 { dg-end-multiline-output "" } */
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13 };
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14
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15 /* Likewise for +=. */
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16
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17 struct s2 {
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18 s2& operator+=(const s2&) {} // { dg-warning "no return statement in function returning non-void" }
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19 /* { dg-begin-multiline-output "" }
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20 s2& operator+=(const s2&) {}
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21 ^
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22 return *this;
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23 { dg-end-multiline-output "" } */
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24 };
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25
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26 /* No warning for "void" return. */
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27
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28 struct s3 {
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29 void operator=(const s3&) { }
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30 };
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31
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32 /* We shouldn't issue the fix-it hint if the return type isn't right. */
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33
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34 struct s4 {
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35 int operator=(int) { } // { dg-warning "no return statement in function returning non-void" }
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36 /* { dg-begin-multiline-output "" }
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37 int operator=(int) { }
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38 ^
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39 { dg-end-multiline-output "" } */
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40 };
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41
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42 /* Example of a multi-line fix-it hint. */
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43
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44 struct s5 {
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45 int i;
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46 s5& operator=(const s5& z) {
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47 i = z.i;
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48 } // { dg-warning "no return statement in function returning non-void" }
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49 /* { dg-begin-multiline-output "" }
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50 i = z.i;
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51 + return *this;
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52 }
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53 ^
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54 { dg-end-multiline-output "" } */
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55 };
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56
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57 /* Example of a multi-line fix-it hint with other statements. */
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58
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59 extern void log (const char *);
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60 struct s6 {
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61 int i;
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62 s6& operator=(const s6& z) {
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63 log ("operator=\n");
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64 i = z.i;
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65 } // { dg-warning "no return statement in function returning non-void" }
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66 /* { dg-begin-multiline-output "" }
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67 i = z.i;
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68 + return *this;
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69 }
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70 ^
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71 { dg-end-multiline-output "" } */
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72 };
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73
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74 /* Another example of a multi-line fix-it hint with other statements. */
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75
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76 struct s7 {
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77 int i;
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78 s7& operator=(const s6& z) {
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79 if (z.i)
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80 log ("operator=\n");
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81 else
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82 log ("operator=\n");
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83 i = z.i;
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84 } // { dg-warning "no return statement in function returning non-void" }
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85 /* { dg-begin-multiline-output "" }
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86 i = z.i;
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87 + return *this;
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88 }
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89 ^
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90 { dg-end-multiline-output "" } */
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91 };
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