| 1 | // RUN: not %clang_cc1 -fdiagnostics-parseable-fixits -x c++ %s 2> %t |
|---|
| 2 | // RUN: FileCheck %s < %t |
|---|
| 3 | // PR5941 |
|---|
| 4 | // END. |
|---|
| 5 | |
|---|
| 6 | /* Test fixits for * and & mismatch in function arguments. |
|---|
| 7 | * Since fixits are on the notes, they cannot be applied automatically. */ |
|---|
| 8 | |
|---|
| 9 | typedef int intTy; |
|---|
| 10 | typedef int intTy2; |
|---|
| 11 | |
|---|
| 12 | void f0(int *a); |
|---|
| 13 | void f1(double *a); |
|---|
| 14 | void f1(intTy &a); |
|---|
| 15 | |
|---|
| 16 | void f2(intTy2 *a) { |
|---|
| 17 | // CHECK: error: no matching function for call to 'f1 |
|---|
| 18 | // CHECK: dereference the argument with * |
|---|
| 19 | // CHECK: void f1(intTy &a); |
|---|
| 20 | // CHECK: fix-it{{.*}}*( |
|---|
| 21 | // CHECK-NEXT: fix-it{{.*}}) |
|---|
| 22 | // CHECK: void f1(double *a); |
|---|
| 23 | f1(a + 1); |
|---|
| 24 | |
|---|
| 25 | // This call cannot be fixed since without resulting in null pointer dereference. |
|---|
| 26 | // CHECK: error: no matching function for call to 'f1 |
|---|
| 27 | // CHECK-NOT: dereference the argument with * |
|---|
| 28 | // CHECK-NOT: fix-it |
|---|
| 29 | f1((int *)0); |
|---|
| 30 | } |
|---|
| 31 | |
|---|
| 32 | void f3(int &a) { |
|---|
| 33 | // CHECK: error: no matching function for call to 'f0 |
|---|
| 34 | // CHECK: fix-it{{.*}}& |
|---|
| 35 | f0(a); |
|---|
| 36 | } |
|---|
| 37 | |
|---|
| 38 | |
|---|
| 39 | void m(int *a, const int *b); // match 2 |
|---|
| 40 | void m(double *a, int *b); // no match |
|---|
| 41 | void m(int *a, double *b); // no match |
|---|
| 42 | void m(intTy &a, int *b); // match 1 |
|---|
| 43 | |
|---|
| 44 | void mcaller(intTy2 a, int b) { |
|---|
| 45 | // CHECK: error: no matching function for call to 'm |
|---|
| 46 | // CHECK: take the address of the argument with & |
|---|
| 47 | // CHECK: fix-it{{.*}}& |
|---|
| 48 | // CHECK: take the address of the argument with & |
|---|
| 49 | // CHECK: fix-it{{.*}}& |
|---|
| 50 | // CHECK: fix-it{{.*}}& |
|---|
| 51 | m(a, b); |
|---|
| 52 | |
|---|
| 53 | // This call cannot be fixed because (a + 1) is not an l-value. |
|---|
| 54 | // CHECK: error: no matching function for call to 'm |
|---|
| 55 | // CHECK-NOT: fix-it |
|---|
| 56 | m(a + 1, b); |
|---|
| 57 | } |
|---|
| 58 | |
|---|
| 59 | // Test derived to base conversions. |
|---|
| 60 | struct A { |
|---|
| 61 | int xx; |
|---|
| 62 | }; |
|---|
| 63 | |
|---|
| 64 | struct B : public A { |
|---|
| 65 | double y; |
|---|
| 66 | }; |
|---|
| 67 | |
|---|
| 68 | class C : A {}; |
|---|
| 69 | |
|---|
| 70 | bool br(A &a); |
|---|
| 71 | bool bp(A *a); |
|---|
| 72 | bool dv(B b); |
|---|
| 73 | |
|---|
| 74 | void u(int x); |
|---|
| 75 | void u(const C *x); |
|---|
| 76 | void u(double x); |
|---|
| 77 | |
|---|
| 78 | void dbcaller(A *ptra, B *ptrb, C &c, B &refb) { |
|---|
| 79 | B b; |
|---|
| 80 | |
|---|
| 81 | // CHECK: error: no matching function for call to 'br |
|---|
| 82 | // CHECK: fix-it{{.*}}* |
|---|
| 83 | br(ptrb); // good |
|---|
| 84 | |
|---|
| 85 | // CHECK: error: no matching function for call to 'bp |
|---|
| 86 | // CHECK: fix-it{{.*}}& |
|---|
| 87 | bp(b); // good |
|---|
| 88 | |
|---|
| 89 | // CHECK: error: no matching function for call to 'dv |
|---|
| 90 | // CHECK-NOT: fix-it |
|---|
| 91 | dv(ptra); // bad: base to derived |
|---|
| 92 | |
|---|
| 93 | // CHECK: error: no matching function for call to 'dv |
|---|
| 94 | // CHECK: remove & |
|---|
| 95 | dv(&b); |
|---|
| 96 | |
|---|
| 97 | // CHECK: error: no matching function for call to 'bp |
|---|
| 98 | // CHECK: remove * |
|---|
| 99 | bp(*ptra); |
|---|
| 100 | |
|---|
| 101 | // CHECK: error: no viable overloaded '=' |
|---|
| 102 | // CHECK: remove & |
|---|
| 103 | b = &refb; |
|---|
| 104 | |
|---|
| 105 | // TODO: Test that we do not provide a fixit when inheritance is private. |
|---|
| 106 | // CHECK: error: no matching function for call to 'bp |
|---|
| 107 | // There should not be a fixit here: |
|---|
| 108 | // CHECK: fix-it |
|---|
| 109 | bp(c); |
|---|
| 110 | |
|---|
| 111 | // CHECK: no matching function for call to 'u' |
|---|
| 112 | // CHECK: candidate function not viable: no known conversion from 'C' to 'const C *' for 1st argument; take the address of the argument with & |
|---|
| 113 | // CHECK: candidate function not viable |
|---|
| 114 | // CHECK: candidate function not viable |
|---|
| 115 | u(c); |
|---|
| 116 | } |
|---|
| 117 | |
|---|
| 118 | // CHECK: errors generated |
|---|
| 119 | |
|---|