[Sun C++] sizeof(mbstate_t) depends on #include order
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Key: STDCXX-843
URL: https://issues.apache.org/jira/browse/STDCXX-843
Project: C++ Standard Library
Issue Type: Bug
Components: 21. Strings
Affects Versions: 4.2.0
Environment: Sun C++
Reporter: Martin Sebor
Assignee: Martin Sebor
Priority: Blocker
Fix For: 4.2.1
The size of the {{mbstate_t}} type and its aliiases (such as
{{std::istream::traits_type::state_type)}}) appears to depend on the order in
which stdcxx headers are #included:
{noformat}
$ cat u.cpp && gmake u.o && mv u.o v.o && gmake CPPOPTS=-DMAIN u LDOPTS=v.o &&
./u
#ifdef MAIN
# include <iomanip>
# include <istream>
void mbstate_size (size_t);
int main ()
{
mbstate_size (sizeof (std::istream::traits_type::state_type));
}
#else
# include <assert.h>
# include <wchar.h>
# include <stdio.h>
void mbstate_size (size_t n)
{
const size_t size = sizeof (mbstate_t);
printf ("%zu == %zu\n", n, size);
fflush (stdout);
assert (n == size);
}
#endif
CC -c -D_RWSTDDEBUG -mt -I/amd/devco/sebor/stdcxx/include
-I/build/sebor/stdcxx-suncc-5.9-j1-15D/include
-I/amd/devco/sebor/stdcxx/tests/include -library=%none -g -m64 +w -errtags
-erroff=hidef u.cpp
CC -c -D_RWSTDDEBUG -mt -I/amd/devco/sebor/stdcxx/include
-I/build/sebor/stdcxx-suncc-5.9-j1-15D/include
-I/amd/devco/sebor/stdcxx/tests/include -DMAIN -library=%none -g -m64 +w
-errtags -erroff=hidef u.cpp
CC u.o -o u -L/build/sebor/stdcxx-suncc-5.9-j1-15D/rwtest -lrwtest15D
-library=%none -mt -m64 -L/build/sebor/stdcxx-suncc-5.9-j1-15D/lib v.o
-R/build/sebor/stdcxx-suncc-5.9-j1-15D/lib:/build/sebor/stdcxx-suncc-5.9-j1-15D/rwtest
-lstd15D -lm
24 == 32
Assertion failed: n == size, file u.cpp, line 24
Abort (core dumped)
{noformat}
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