C1X: implement generic selections
As an extension, generic selection support has been added for all
supported languages. The syntax is the same as for C1X.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129554 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/generic-selection.c b/test/Sema/generic-selection.c
new file mode 100644
index 0000000..8cef975
--- /dev/null
+++ b/test/Sema/generic-selection.c
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 -std=c1x -fsyntax-only -verify %s
+
+void foo(int n) {
+ (void) _Generic(0,
+ struct A: 0, // expected-error {{type 'struct A' in generic association incomplete}}
+ void(): 0, // expected-error {{type 'void ()' in generic association not an object type}}
+ int[n]: 0); // expected-error {{type 'int [n]' in generic association is a variably modified type}}
+
+ (void) _Generic(0,
+ void (*)(): 0, // expected-note {{compatible type 'void (*)()' specified here}}
+ void (*)(void): 0); // expected-error {{type 'void (*)(void)' in generic association compatible with previously specified type 'void (*)()'}}
+
+ (void) _Generic((void (*)()) 0, // expected-error {{controlling expression type 'void (*)()' compatible with 2 generic association types}}
+ void (*)(int): 0, // expected-note {{compatible type 'void (*)(int)' specified here}}
+ void (*)(void): 0); // expected-note {{compatible type 'void (*)(void)' specified here}}
+
+ (void) _Generic(0, // expected-error {{controlling expression type 'int' not compatible with any generic association type}}
+ char: 0, short: 0, long: 0);
+
+ int a1[_Generic(0, int: 1, short: 2, float: 3, default: 4) == 1 ? 1 : -1];
+ int a2[_Generic(0, default: 1, short: 2, float: 3, int: 4) == 4 ? 1 : -1];
+ int a3[_Generic(0L, int: 1, short: 2, float: 3, default: 4) == 4 ? 1 : -1];
+ int a4[_Generic(0L, default: 1, short: 2, float: 3, int: 4) == 1 ? 1 : -1];
+ int a5[_Generic(0, int: 1, short: 2, float: 3) == 1 ? 1 : -1];
+ int a6[_Generic(0, short: 1, float: 2, int: 3) == 3 ? 1 : -1];
+}