Description
| Bugzilla Link | 18923 |
| Version | trunk |
| OS | Windows NT |
| CC | @chengniansun |
Extended Description
At trunk 201801. I am not sure whether clang support the warning flag -Wc++-compat. Currently it does not warn on the uninitialized field in a struct.
$: cat s.c
struct S{const int i;};
void f() {struct S s;}
$: clang-trunk -Wc++-compat -c s.c
$: clang++ -c s.c
clang: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated
s.c:1:8: error: implicit default constructor for 'S' must explicitly initialize the const member 'i'
struct S{const int i;};
^
s.c:1:20: note: declared here
struct S{const int i;};
^
s.c:2:20: note: implicit default constructor for 'S' first required here
void f() {struct S s;}
^
1 error generated.
$:
$: gcc-trunk -Wc++-compat -c s.c
s.c: In function ‘f’:
s.c:2:20: warning: uninitialized const member in ‘struct S’ is invalid in C++ [-Wc++-compat]
void f() {struct S s;}
^
s.c:1:20: note: ‘i’ should be initialized
struct S{const int i;};
^