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      1 // RUN: rm -rf %t
      2 // RUN: %clang_cc1 -fmodules -Wreturn-type -fmodules-cache-path=%t -I %S/Inputs %s -verify -Wno-objc-root-class
      3 
      4 @class C2;
      5 @class C3;
      6 @class C3;
      7 @import redecl_merge_left;
      8 typedef struct my_struct_type *my_struct_ref;
      9 @protocol P4;
     10 @class C3;
     11 @class C3;
     12 
     13 int *call_eventually_noreturn(void) {
     14   eventually_noreturn();
     15 } // expected-warning{{control reaches end of non-void function}}
     16 
     17 int *call_eventually_noreturn2(void) {
     18   eventually_noreturn2();
     19 } // expected-warning{{control reaches end of non-void function}}
     20 
     21 @import redecl_merge_right;
     22 
     23 int *call_eventually_noreturn_again(void) {
     24   eventually_noreturn();
     25 }
     26 
     27 int *call_eventually_noreturn2_again(void) {
     28   // noreturn and non-noreturn functions have different types
     29   eventually_noreturn2(); // expected-error{{call to 'eventually_noreturn2' is ambiguous}}
     30   // expected-note@93{{candidate function}}
     31   // expected-note@90{{candidate function}}
     32 }
     33 
     34 @implementation A
     35 - (Super*)init { return self; }
     36 @end
     37 
     38 void f(A *a) {
     39   [a init];
     40 }
     41 
     42 @class A;
     43 
     44 B *f1() {
     45   return [B create_a_B];
     46 }
     47 
     48 @class B;
     49 
     50 void testProtoMerge(id<P1> p1, id<P2> p2) {
     51   [p1 protoMethod1];
     52   [p2 protoMethod2];
     53 }
     54 
     55 struct S1 {
     56   int s1_field;
     57 };
     58 
     59 struct S3 {
     60   int s3_field;
     61 };
     62 
     63 void testTagMerge() {
     64   consume_S1(produce_S1());
     65   struct S2 s2;
     66   s2.field = 0;
     67   consume_S2(produce_S2());
     68   struct S1 s1;
     69   s1.s1_field = 0;
     70   consume_S3(produce_S3());
     71   struct S4 s4;
     72   s4.field = 0;
     73   consume_S4(produce_S4());
     74   struct S3 s3;
     75   s3.s3_field = 0;
     76 }
     77 
     78 void testTypedefMerge(int i, double d) {
     79   T1 *ip = &i;
     80   // FIXME: Typedefs aren't actually merged in the sense of other merges, because
     81   // we should only merge them when the types are identical.
     82   // in other file: expected-note@60{{candidate found by name lookup is 'T2'}}
     83   // in other file: expected-note@63{{candidate found by name lookup is 'T2'}}
     84   T2 *dp = &d; // expected-error{{reference to 'T2' is ambiguous}}
     85 }
     86 
     87 void testFuncMerge(int i) {
     88   func0(i);
     89   func1(i);
     90   // in other file: expected-note@64{{candidate function}}
     91   // in other file: expected-note@70{{candidate function}}
     92   func2(i); // expected-error{{call to 'func2' is ambiguous}}
     93 }
     94 
     95 void testVarMerge(int i) {
     96   var1 = i;
     97   // in other files: expected-note@77 2{{candidate found by name lookup is 'var2'}}
     98   var2 = i; // expected-error{{reference to 'var2' is ambiguous}}
     99   // in other files: expected-note@79 2{{candidate found by name lookup is 'var3'}}
    100   var3 = i; // expected-error{{reference to 'var3' is ambiguous}}
    101 }
    102 
    103 // Test redeclarations of entities in explicit submodules, to make
    104 // sure we're maintaining the declaration chains even when normal name
    105 // lookup can't see what we're looking for.
    106 void testExplicit() {
    107   Explicit *e;
    108   int *(*fp)(void) = &explicit_func;
    109   int *ip = explicit_func();
    110 
    111   // FIXME: Should complain about definition not having been imported.
    112   struct explicit_struct es = { 0 };
    113 }
    114 
    115 // Test resolution of declarations from multiple modules with no
    116 // common original declaration.
    117 void test_C(C *c) {
    118   c = get_a_C();
    119   accept_a_C(c);
    120 }
    121 
    122 void test_C2(C2 *c2) {
    123   c2 = get_a_C2();
    124   accept_a_C2(c2);
    125 }
    126 
    127 void test_C3(C3 *c3) {
    128   c3 = get_a_C3();
    129   accept_a_C3(c3);
    130 }
    131 
    132 C4 *global_C4;
    133 
    134 ClassWithDef *cwd1;
    135 
    136 @import redecl_merge_left_left;
    137 
    138 void test_C4a(C4 *c4) {
    139   global_C4 = c4 = get_a_C4();
    140   accept_a_C4(c4);
    141 }
    142 
    143 void test_ClassWithDef(ClassWithDef *cwd) {
    144   [cwd method];
    145 }
    146 
    147 @import redecl_merge_bottom;
    148 
    149 void test_C4b() {
    150   if (&refers_to_C4) {
    151   }
    152 }
    153 
    154 @implementation B
    155 + (B*)create_a_B { return 0; }
    156 @end
    157 
    158 void g(A *a) {
    159   [a init];
    160 }
    161 
    162 @protocol P3
    163 - (void)p3_method;
    164 @end
    165 
    166 id<P4> p4;
    167 id<P3> p3;
    168 
    169 // Make sure we don't get conflicts with 'id'.
    170 funcptr_with_id fid;
    171 id id_global;
    172 
    173 
    174