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Subject: [Bug c++/46156] ICE: in tsubst_copy, at cp/pt.c:11370 with -frounding-math
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46156

Yu Simin <silver24k at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |silver24k at gmail dot com

--- Comment #1 from Yu Simin <silver24k at gmail dot com> 2010-10-24 10:18:55 UTC ---
this code (reduced from wxprintf.cpp in wxWidget trunk)


#include <stdarg.h>

template <typename _T>
void 
foo (long double *p, va_list &argptr)
  {
    *p = va_arg (argptr, long double);
  }

void 
bar (va_list ap)
  {
    long double argdata;
    foo<char> (&argdata, ap);
  }


can also produce this ICE

mingw32-gcc -O2 -c ice.cpp  # alias of i786-mingw32-gcc running on Linux 64bit
OR win32
ice.cpp: In function 'void foo(long double*, char*&) [with _T = char, va_list =
char*]':
ice.cpp:12:25:   instantiated from here
ice.cpp:6:3: internal compiler error: in tsubst_copy, at cp/pt.c:11370

arm-gcc -O2 -c ice.cpp    # alias of arm-none-eabi-gcc running on Linux 64bit
OR win32
ice.cpp:9:6: note: the mangling of 'va_list' has changed in GCC 4.4
ice.cpp: In function 'void foo(long double*, va_list&) [with _T = char, va_list
= __va_list]':
ice.cpp:12:25:   instantiated from here
ice.cpp:6:3: internal compiler error: in tsubst_copy, at cp/pt.c:11370

both the ARM and MINGW32 versions are built from trunk r165885