86b5eabfea
WG14 has adopted N2480 (http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2480.pdf) into C2x at the meetings last week, allowing parameter names of a function definition to be elided. This patch relaxes the error so that C++ and C2x do not diagnose this situation, and modes before C2x will allow it as an extension. This also adds the same feature to ObjC blocks under the assumption that ObjC wishes to follow the C standard in this regard.
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
// RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks
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void take(void*);
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void test() {
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take(^(int x){});
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take(^(int x, int y){});
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take(^(int x, int y){});
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take(^(int x, // expected-note {{previous declaration is here}}
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int x){}); // expected-error {{redefinition of parameter 'x'}}
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take(^(int x) { return x+1; });
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int (^CP)(int) = ^(int x) { return x*x; };
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take(CP);
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int arg;
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^{return 1;}();
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^{return 2;}(arg); // expected-error {{too many arguments to block call}}
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^(void){return 3;}(1); // expected-error {{too many arguments to block call}}
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^(){return 4;}(arg); // expected-error {{too many arguments to block call}}
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^(int x, ...){return 5;}(arg, arg); // Explicit varargs, ok.
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}
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int main(int argc, char** argv) {
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^(int argCount) {
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argCount = 3;
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}(argc);
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}
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// radar 7528255
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void f0() {
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^(int, double d, char) {}(1, 1.34, 'a'); // expected-warning {{omitting the parameter name in a function definition is a C2x extension}} \
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// expected-warning {{omitting the parameter name in a function definition is a C2x extension}}
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}
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// rdar://problem/8962770
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void test4() {
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int (^f)() = ^((x)) { }; // expected-warning {{type specifier missing}} expected-error {{type-id cannot have a name}}
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}
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// rdar://problem/9170609
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void test5_helper(void (^)(int, int[*]));
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void test5(void) {
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test5_helper(^(int n, int array[n]) {});
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}
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// Reduced from a problem on platforms where va_list is an array.
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struct tag {
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int x;
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};
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typedef struct tag array_ty[1];
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void test6(void) {
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void (^block)(array_ty) = ^(array_ty arr) { };
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array_ty arr;
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block(arr);
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}
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