140 lines
3.2 KiB
C
140 lines
3.2 KiB
C
// RUN: %clang_cc1 %s -fsyntax-only -verify -triple x86_64-pc-linux-gnu -Wno-unevaluated-expression
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typedef unsigned __uint32_t;
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#define __byte_swap_int_var(x) \
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__extension__ ({ register __uint32_t __X = (x); \
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__asm ("bswap %0" : "+r" (__X)); \
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__X; })
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int test(int _x) {
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return (__byte_swap_int_var(_x));
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}
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// PR2374
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int test2() { return ({L:5;}); }
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int test3() { return ({ {5;} }); } // expected-error {{returning 'void' from a function with incompatible result type 'int'}}\
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// expected-warning {{expression result unused}}
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int test4() { return ({ ({5;}); }); }
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int test5() { return ({L1: L2: L3: 5;}); }
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int test6() { return ({5;}); }
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void test7() { ({5;}); } // expected-warning {{expression result unused}}
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// PR3062
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int test8[({10;})]; // expected-error {{statement expression not allowed at file scope}}
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// PR3912
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void test9(const void *P) {
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__builtin_prefetch(P);
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}
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void *test10() {
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bar:
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return &&bar; // expected-warning {{returning address of label, which is local}}
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}
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// PR38569: Don't warn when returning a label from a statement expression.
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void test10_logpc(void*);
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void test10a() {
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test10_logpc(({
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my_pc:
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&&my_pc;
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}));
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}
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// PR6034
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void test11(int bit) {
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switch (bit)
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switch (env->fpscr) // expected-error {{use of undeclared identifier 'env'}}
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{
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}
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}
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// rdar://3271964
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enum Numbers { kOne, kTwo, kThree, kFour};
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int test12(enum Numbers num) {
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switch (num == kOne) {// expected-warning {{switch condition has boolean value}}
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default:
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case kThree:
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break;
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}
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}
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enum x { a, b, c, d, e, f, g };
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void foo(enum x X) {
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switch (X) { // expected-warning {{enumeration value 'g' not handled in switch}}
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case a:
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case b:
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case c:
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case d:
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case e:
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case f:
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break;
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}
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switch (X) { // expected-warning {{enumeration values 'f' and 'g' not handled in switch}}
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case a:
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case b:
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case c:
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case d:
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case e:
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break;
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}
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switch (X) { // expected-warning {{enumeration values 'e', 'f', and 'g' not handled in switch}}
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case a:
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case b:
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case c:
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case d:
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break;
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}
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switch (X) { // expected-warning {{5 enumeration values not handled in switch: 'c', 'd', 'e'...}}
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case a:
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case b:
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break;
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}
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}
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int test_pr8880() {
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int first = 1;
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for ( ; ({ if (first) { first = 0; continue; } 0; }); )
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return 0;
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return 1;
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}
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// In PR22849, we considered __ptr to be a static data member of the anonymous
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// union. Now we declare it in the parent DeclContext.
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void test_pr22849() {
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struct Bug {
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typeof(({ unsigned long __ptr; (int *)(0); })) __val;
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union Nested {
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typeof(({ unsigned long __ptr; (int *)(0); })) __val;
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} n;
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};
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enum E {
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SIZE = sizeof(({unsigned long __ptr; __ptr;}))
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};
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}
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// GCC ignores empty statements at the end of compound expressions where the
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// result type is concerned.
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void test13() {
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int a;
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a = ({ 1; });
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a = ({1;; });
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a = ({int x = 1; (void)x; }); // expected-error {{assigning to 'int' from incompatible type 'void'}}
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a = ({int x = 1; (void)x;; }); // expected-error {{assigning to 'int' from incompatible type 'void'}}
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}
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void test14() { return ({}); }
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void test15() {
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return ({;;;; });
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}
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void test16() {
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return ({test:;; });
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}
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