[cfe-dev] Compiler's errors on Ubuntu trusty: Impact of -stdlib=libc++ over a clang++-3.8
zosrothko via cfe-dev
cfe-dev at lists.llvm.org
Thu Jul 20 09:23:02 PDT 2017
Hello CFE list
I have an issue compiling a small c++ program with clang++-3.8 on Ubuntu
trusty
Using the joined c++ program bug.cpp,
* clang++-3.8 -std=c++11 bug.cpp compiles fine while
* clang++-3.8 -std=c++11 -stdlib=libc++ bug.cpp produces invalid
compile errors.
What could be the problem and how can it be solved?
TIA
fandre at ubuntu-trusty-64:~/clang$ uname -a
Linux ubuntu-trusty-64 4.4.0-83-generic #106~14.04.1-Ubuntu SMP Mon Jun
26 18:10:19 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
fandre at ubuntu-trusty-64:~/clang$ clang++-3.8 --version
clang version 3.8.0-2ubuntu3~trusty4 (tags/RELEASE_380/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Below is the console log
fandre at ubuntu-trusty-64:~/clang$ clang++-3.8 -std=c++11 bug.cpp
fandre at ubuntu-trusty-64:~/clang$ clang++-3.8 -std=c++11 -stdlib=libc++
bug.cpp
bug.cpp:56:88: error: 'Header' does not refer to a value
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, code) == 0x01)>)> poco_...
^
bug.cpp:45:9: note: declared here
struct Header
^
bug.cpp:56:96: error: use of undeclared identifier 'code'
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, code) == 0x01)>)> poco_...
^
bug.cpp:56:111: error: type name requires a specifier or qualifier
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, code) == 0x01)>)> poco_...
^
bug.cpp:57:88: error: 'Header' does not refer to a value
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, checksum) == 0x02)>)> p...
^
bug.cpp:45:9: note: declared here
struct Header
^
bug.cpp:57:96: error: use of undeclared identifier 'checksum'
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, checksum) == 0x02)>)> p...
^
bug.cpp:57:115: error: type name requires a specifier or qualifier
...poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, checksum) == 0x02)>)> poco_stati...
^
bug.cpp:58:88: error: 'Header' does not refer to a value
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, id) == 0x04)>)> poco_st...
^
bug.cpp:45:9: note: declared here
struct Header
^
bug.cpp:58:96: error: use of undeclared identifier 'id'
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, id) == 0x04)>)> poco_st...
^
bug.cpp:58:109: error: type name requires a specifier or qualifier
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, id) == 0x04)>)> poco_st...
^
bug.cpp:59:88: error: 'Header' does not refer to a value
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, seq) == 0x06)>)> poco_s...
^
bug.cpp:45:9: note: declared here
struct Header
^
bug.cpp:59:96: error: use of undeclared identifier 'seq'
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, seq) == 0x06)>)> poco_s...
^
bug.cpp:59:110: error: type name requires a specifier or qualifier
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, seq) == 0x06)>)> poco_s...
^
12 errors generated.
fandre at ubuntu-trusty-64:~/clang$ cp bug.cpp ../shared
fandre at ubuntu-trusty-64:~/clang$ clang++-3.8 -std=c++11 bug.cpp
fandre at ubuntu-trusty-64:~/clang$ clang++-3.8 -std=c++11 -stdlib=libc++
bug.cpp
bug.cpp:56:88: error: 'Header' does not refer to a value
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, code) == 0x01)>)> poco_...
^
bug.cpp:45:9: note: declared here
struct Header
^
bug.cpp:56:96: error: use of undeclared identifier 'code'
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, code) == 0x01)>)> poco_...
^
bug.cpp:56:111: error: type name requires a specifier or qualifier
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, code) == 0x01)>)> poco_...
^
bug.cpp:57:88: error: 'Header' does not refer to a value
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, checksum) == 0x02)>)> p...
^
bug.cpp:45:9: note: declared here
struct Header
^
bug.cpp:57:96: error: use of undeclared identifier 'checksum'
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, checksum) == 0x02)>)> p...
^
bug.cpp:57:115: error: type name requires a specifier or qualifier
...poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, checksum) == 0x02)>)> poco_stati...
^
bug.cpp:58:88: error: 'Header' does not refer to a value
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, id) == 0x04)>)> poco_st...
^
bug.cpp:45:9: note: declared here
struct Header
^
bug.cpp:58:96: error: use of undeclared identifier 'id'
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, id) == 0x04)>)> poco_st...
^
bug.cpp:58:109: error: type name requires a specifier or qualifier
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, id) == 0x04)>)> poco_st...
^
bug.cpp:59:88: error: 'Header' does not refer to a value
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, seq) == 0x06)>)> poco_s...
^
bug.cpp:45:9: note: declared here
struct Header
^
bug.cpp:59:96: error: use of undeclared identifier 'seq'
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, seq) == 0x06)>)> poco_s...
^
bug.cpp:59:110: error: type name requires a specifier or qualifier
typedef
poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool)
(offsetof(Header, seq) == 0x06)>)> poco_s...
^
12 errors generated.
fandre at ubuntu-trusty-64:~/clang$
-------------- next part --------------
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-------------- next part --------------
#include <iostream>
#include <cstddef>
#ifdef Header
#undef Header
#endif
#define POCO_JOIN(X, Y) POCO_DO_JOIN(X, Y)
#define POCO_DO_JOIN(X, Y) POCO_DO_JOIN2(X, Y)
#define POCO_DO_JOIN2(X, Y) X##Y
#define POCO_UNUSED
template <bool x>
struct POCO_STATIC_ASSERTION_FAILURE;
template <>
struct POCO_STATIC_ASSERTION_FAILURE<true>
{
enum
{
value = 1
};
};
template <int x>
struct poco_static_assert_test
{
};
#if 0
#define poco_static_assert(B) \
typedef char POCO_JOIN(poco_static_assert_typedef_, __LINE__) \
[POCO_STATIC_ASSERTION_FAILURE<(bool) (B)>::value]
#else
#define poco_static_assert(B) \
typedef poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool) (B)>)> \
POCO_JOIN(poco_static_assert_typedef_, __LINE__) POCO_UNUSED
#endif
using namespace std;
class Foo {
public:
struct Header
{
char type;
char code;
short checksum;
short id;
short seq;
};
typedef poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool) (offsetof(Header, code) == 0x01)>)> poco_static_assert_typedef_53 __attribute__((unused));
typedef poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool) (offsetof(Header, checksum) == 0x02)>)> poco_static_assert_typedef_54 __attribute__((unused));
typedef poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool) (offsetof(Header, id) == 0x04)>)> poco_static_assert_typedef_55 __attribute__((unused));
typedef poco_static_assert_test<sizeof(POCO_STATIC_ASSERTION_FAILURE<(bool) (offsetof(Header, seq) == 0x06)>)> poco_static_assert_typedef_56 __attribute__((unused));
};
int main() {
cout << "Hi!" << endl;
return 0;
}
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