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b9ece24dfc
We already check that statement expressions are in a function or block, but we didn't do anything with that information. Now we use that DeclContext for the duration of the statement expression. Otherwise, we'd treat statement expression locals as static data members and go into the weeds. llvm-svn: 235335
113 lines
2.6 KiB
C
113 lines
2.6 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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// 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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