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// RUN: %clang_cc1 -verify -Wno-vla %s
/* WG14 N1460: Yes
* Subsetting the standard
*/
// If we claim to not support the feature then we expect diagnostics when
// using that feature. Otherwise, we expect no diagnostics.
#ifdef __STDC_NO_COMPLEX__
// We do not have any targets which do not support complex, so we don't
// expect to get into this block.
#error "it's unexpected that we don't support complex"
float _Complex fc;
double _Complex dc;
long double _Complex ldc;
#else
#define HAS_COMPLEX
float _Complex fc;
double _Complex dc;
long double _Complex ldc;
#endif
#ifdef __STDC_NO_VLA__
// We do not have any targets which do not support VLAs, so we don't expect
// to get into this block.
#error "it's unexpected that we don't support VLAs"
void func(int n, int m[n]) {
int array[n];
}
#else
#define HAS_VLA
void func(int n, int m[n]) {
int array[n];
}
#endif
// NB: it's not possible to test for __STDC_NO_THREADS__ because that is
// specifically about whether <threads.h> exists and is supported, which is
// outside the control of the compiler. It does not cover use of thread_local.
#if defined(HAS_COMPLEX) && defined(HAS_VLA)
// If we support all these optional features, we don't expect any other
// diagnostics to have fired.
// expected-no-diagnostics
#endif
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