[Bug c++/31708] New: threadprivate with function block static reports incomplete type

[mstaley at lanl dot gov]

Yesterday (2007-4-25) I downloaded gcc 4.2 and ran into a problem with g++
as illustrated here:

 templateclass T
 struct xyz {
T x, y, z;
 };

 templateclass T
 struct myclass {
void fun(void);
 };

 templateclass T
 void myclassT::fun(void)
 {
static xyzT var;
#ifdef _OPENMP
   #pragma omp threadprivate(var)
#endif
 }

 int main(void)
 {
 }

% g++ -fopenmp code.cc
code.cc: In member function 'void myclassT::fun()':
code.cc:16: error: 'threadprivate' 'var' has incomplete type

Perhaps I'm missing something, but I don't see how var's type can
be incomplete in this example.

Note: compiles if either or both of xyz and myclass is a non-template,
so this doesn't seem to be the same problem reported in 27557.


-- 
   Summary: threadprivate with function block static reports
incomplete type
   Product: gcc
   Version: 4.2.0
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mstaley at lanl dot gov


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31708

[Bug libstdc++/29529] purify with iostream reports 128 uninitialized memory reads

[mstaley at lanl dot gov]

--- Comment #2 from mstaley at lanl dot gov  2006-10-25 22:38 ---
(In reply to comment #1)
 This is most likely a purify problem.  Have you tried using valgrind instead?
 

I just tried valgrind. I'm not really familiar with valgrind, but as far
as I can tell it reports no problems. So, either purify is wrong, valgrind
is wrong, or they're both wrong in different ways.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29529

[Bug c++/29529] New: purify with iostream reports 128 uninitialized memory reads

[mstaley at lanl dot gov]

When I compile this code:

   #include iostream
   int main(void)
   {
   }

with g++, instrumented with the purify utility, purify reports
the following:

   UMR: Uninitialized memory read (128 times)
   This is occurring while in:
 __gconv_get_alias_db [libc.so.6]
 wctob  [libc.so.6]
 std::ctype wchar_t::_M_initialize_ctype( void) [libstdc++.so.6]
 std::ctype wchar_t::ctype( unsigned) [libstdc++.so.6]
 std::locale::_Impl::_Impl( unsigned) [libstdc++.so.6]
 std::locale::_Impl::_Impl( unsigned) [libstdc++.so.6]
   Reading 4 bytes from 0xbfa77a24 on the stack.
   Address 0xbfa77a24 is   84 bytes below frame pointer in function wctob

Dunno if this is a g++ problem, purify problem, OS problem, system
library problem, not really an error, or whatever, but it would be
nice to make it go away.

System/compiler info:

   uname -a
  Linux banat 2.6.15-26-686 #1 SMP PREEMPT Mon Jul 17 20:14:14 UTC 2006
  i686 GNU/Linux

   g++ --version
  g++ (GCC) 4.0.3 (Ubuntu 4.0.3-1ubuntu5)

Without iostream, no problem.


-- 
   Summary: purify with iostream reports 128 uninitialized memory
reads
   Product: gcc
   Version: 4.0.3
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mstaley at lanl dot gov


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29529

[Bug c++/29425] New: template template + default parameter = selection failure

[mstaley at lanl dot gov]

Maybe you've got this already but I don't see it. The following fails
to compile (reports an ambiguity) in g++ 4.0.3:

   #include iostream

   templateclass A, class B=int
   class two { };

   templateclass T
   struct print {
  void operator()(void) const
 { std::cout  1  std::endl; }
   };

   templatetemplateclass class T, class A
   struct print TA  {
  void operator()(void) const
 { std::cout  2  std::endl; }
   };

   templatetemplateclass, class class T, class A, class B
   struct print TA,B  {
  void operator()(void) const
 { std::cout  3  std::endl; }
   };

   int main(void)
   {
  print twoint,int ()();
   }

Two other compilers I've tried, Portland Group and Intel, compile
the code; the executables print 3. That's what I'd have expected.

If class B isn't defaulted in class template two, there's no
problem.

Martin


-- 
   Summary: template template + default parameter = selection
failure
   Product: gcc
   Version: 4.0.3
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mstaley at lanl dot gov


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29425