llvm-project/clang/test/SemaCXX/vla-construct.cpp

49 lines
1.4 KiB
C++

// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fcxx-exceptions -fexceptions -O0 -verify %s
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fcxx-exceptions -fexceptions -pedantic-errors -DPE -O0 -verify %s
# ifndef PE
// expected-no-diagnostics
# endif
extern "C" int printf(const char*, ...);
static int N;
struct S {
S() __attribute__ ((nothrow)) { printf("%d: S()\n", ++N); }
~S() __attribute__ ((nothrow)) { printf("%d: ~S()\n", N--); }
int n[17];
};
void print(int n, int a, int b, int c, int d) {
printf("n=%d\n,sizeof(S)=%d\nsizeof(array_t[0][0])=%d\nsizeof(array_t[0])=%d\nsizeof(array_t)=%d\n",
n, a, b, c, d);
if (n == 2) throw(n);
}
void test(int n) {
S array_t[n][n+1];
# ifdef PE
// expected-error@-2 {{variable length arrays are a C99 feature}} expected-note@-2 {{read of non-const}} expected-note@-3 {{here}}
// expected-error@-3 {{variable length arrays are a C99 feature}} expected-note@-3 {{read of non-const}} expected-note@-4 {{here}}
# endif
int sizeof_S = sizeof(S);
int sizeof_array_t_0_0 = sizeof(array_t[0][0]);
int sizeof_array_t_0 = sizeof(array_t[0]);
int sizeof_array_t = sizeof(array_t);
print(n, sizeof_S, sizeof_array_t_0_0, sizeof_array_t_0, sizeof_array_t);
}
int main()
{
try {
test(2);
} catch(int e) {
printf("exception %d\n", e);
}
try {
test(3);
} catch(int e) {
printf("exception %d", e);
}
}