102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
// RUN: %clang_cc1 %s -fsyntax-only -verify
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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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// PR6034
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void test11(int bit) {
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switch (bit) // expected-warning {{switch statement has empty body}} expected-note {{put the semicolon on a separate line to silence this warning}}
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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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// PR 8880
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// FIXME: Clang should reject this, since GCC does. Previously this
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// was causing a crash in the CFG builder.
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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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