<html>
<head>
<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - -fmodules causes failure of inclusion of STL headers"
href="http://llvm.org/bugs/show_bug.cgi?id=21624">21624</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>-fmodules causes failure of inclusion of STL headers
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>MacOS X
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>191919@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>clang version 3.6.0 (trunk 222503) failed to compile trivial code that includes
STL header when using -fmodule:
The code:
```
#include <vector>
int main() {}
```
Compile it with:
```
$ /opt/bin/clang++ -fmodules -c -o m mm.cpp
```
clang gave the following error messages:
```
While building module 'std' imported from mm.cpp:1:
In file included from <module-includes>:4:
In file included from /usr/include/c++/v1/ccomplex:21:
In file included from /usr/include/c++/v1/complex:247:
In file included from /usr/include/c++/v1/sstream:174:
In file included from /usr/include/c++/v1/ostream:140:
/usr/include/c++/v1/locale:873:26: error: use of undeclared identifier
'strtoll_l'; did you mean 'wcstoll_l'?
long long __ll = strtoll_l(__a, &__p2, __base, _LIBCPP_GET_C_LOCALE);
^
/usr/include/xlocale/_wchar.h:98:2: note: 'wcstoll_l' declared here
wcstoll_l(const wchar_t * __restrict, wchar_t ** __restrict, int,
^
While building module 'std' imported from mm.cpp:1:
In file included from <module-includes>:4:
In file included from /usr/include/c++/v1/ccomplex:21:
In file included from /usr/include/c++/v1/complex:247:
In file included from /usr/include/c++/v1/sstream:174:
In file included from /usr/include/c++/v1/ostream:140:
/usr/include/c++/v1/locale:873:36: error: cannot initialize a parameter of type
'const wchar_t *' with an lvalue of type 'const char *'
long long __ll = strtoll_l(__a, &__p2, __base, _LIBCPP_GET_C_LOCALE);
^~~
/usr/include/xlocale/_wchar.h:98:38: note: passing argument to parameter here
wcstoll_l(const wchar_t * __restrict, wchar_t ** __restrict, int,
^
While building module 'std' imported from mm.cpp:1:
In file included from <module-includes>:4:
In file included from /usr/include/c++/v1/ccomplex:21:
In file included from /usr/include/c++/v1/complex:247:
In file included from /usr/include/c++/v1/sstream:174:
In file included from /usr/include/c++/v1/ostream:140:
/usr/include/c++/v1/locale:913:35: error: use of undeclared identifier
'strtoull_l'; did you mean 'wcstoull_l'?
unsigned long long __ll = strtoull_l(__a, &__p2, __base,
_LIBCPP_GET_C_LOCALE);
^
/usr/include/xlocale/_wchar.h:101:2: note: 'wcstoull_l' declared here
wcstoull_l(const wchar_t * __restrict, wchar_t ** __restrict, int,
^
While building module 'std' imported from mm.cpp:1:
In file included from <module-includes>:4:
In file included from /usr/include/c++/v1/ccomplex:21:
In file included from /usr/include/c++/v1/complex:247:
In file included from /usr/include/c++/v1/sstream:174:
In file included from /usr/include/c++/v1/ostream:140:
/usr/include/c++/v1/locale:913:46: error: cannot initialize a parameter of type
'const wchar_t *' with an lvalue of type 'const char *'
unsigned long long __ll = strtoull_l(__a, &__p2, __base,
_LIBCPP_GET_C_LOCALE);
^~~
/usr/include/xlocale/_wchar.h:101:39: note: passing argument to parameter here
wcstoull_l(const wchar_t * __restrict, wchar_t ** __restrict, int,
^
While building module 'std' imported from mm.cpp:1:
In file included from <module-includes>:4:
In file included from /usr/include/c++/v1/ccomplex:21:
In file included from /usr/include/c++/v1/complex:247:
In file included from /usr/include/c++/v1/sstream:174:
In file included from /usr/include/c++/v1/ostream:140:
/usr/include/c++/v1/locale:943:28: error: use of undeclared identifier
'strtold_l'
long double __ld = strtold_l(__a, &__p2, _LIBCPP_GET_C_LOCALE);
^
mm.cpp:1:10: fatal error: could not build module 'std'
#include <vector>
~~~~~~~~^
6 errors generated.
```
Xcode's stock clang (Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM
3.5svn)) is ok with `-fmodules`.</pre>
</div>
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