http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46156
--- Comment #11 from Yu Simin <silver24k at gmail dot com> 2010-12-19 06:38:18
UTC ---
my test case
#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);
}
still causes this ICE against current trunk:
just
g++ -v -c ice.cpp
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=c:/snowfishroot/mingw/bin/../libexec/gcc/mingw32/4.6.0/lto-wrapper.exe
Target: mingw32
Configured with: ../../../gcc_trunk/configure --build=x86_64-unknown-linux-gnu
--host=mingw32 --target=mingw32 --prefix=/mingw --with-pkgversion='MinGW GCC
4.5' --disable-win32-registry --enable-shared --enable-static --enable-libgomp
--enable-version-specific-runtime-libs --with-gmp=/mingw --with-mpfr=/mingw
--with-ppl=/mingw --with-cloog=/mingw --enable-libstdcxx-debug
--with-build-time-tools=/platform/cross-on-linux/mingw --disable-nls
--with-mpc=/mingw --enable-languages=c,c++ --enable-lto --disable-plugin
--enable-checking=release --enable-sjlj-exceptions
Thread model: win32
gcc version 4.6.0 20101218 (experimental) mingw-20090616 (MinGW GCC 4.5)
COLLECT_GCC_OPTIONS='-v' '-c' '-shared-libgcc' '-mtune=generic'
'-march=pentiumpro'
c:/snowfishroot/mingw/bin/../libexec/gcc/mingw32/4.6.0/cc1plus.exe -quiet -v
-iprefix c:\snowfishroot\mingw\bin\../lib/gcc/mingw32/4.6.0/ -D__MSVCRT_DLL__
ice.cpp -quiet -dumpbase ice.cpp -mtune=generic -march=pentiumpro -auxbase ice
-version -o D:\Temp\ccjWK4lv.s
GNU C++ (MinGW GCC 4.5) version 4.6.0 20101218 (experimental) mingw-20090616
(mingw32)
compiled by GNU C version 4.6.0 20101218 (experimental) mingw-20090616, GMP
version 5.0.1, MPFR version 3.0.0-p3, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory
"c:\snowfishroot\mingw\bin\../lib/gcc/mingw32/4.6.0/../../../../mingw32/include"
ignoring duplicate directory
"c:/snowfishroot/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.0/include/c++"
ignoring duplicate directory
"c:/snowfishroot/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.0/include/c++/mingw32"
ignoring duplicate directory
"c:/snowfishroot/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.0/include/c++/backward"
ignoring duplicate directory
"c:/snowfishroot/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.0/include"
ignoring nonexistent directory "/mingw/include"
ignoring duplicate directory "c:/snowfishroot/mingw/lib/gcc/../../include"
ignoring duplicate directory
"c:/snowfishroot/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.0/include-fixed"
ignoring nonexistent directory
"c:/snowfishroot/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.0/../../../../mingw32/include"
ignoring nonexistent directory "/mingw/include"
#include "..." search starts here:
#include <...> search starts here:
c:\snowfishroot\mingw\bin\../lib/gcc/mingw32/4.6.0/include/c++
c:\snowfishroot\mingw\bin\../lib/gcc/mingw32/4.6.0/include/c++/mingw32
c:\snowfishroot\mingw\bin\../lib/gcc/mingw32/4.6.0/include/c++/backward
c:\snowfishroot\mingw\bin\../lib/gcc/mingw32/4.6.0/include
c:\snowfishroot\mingw\bin\../lib/gcc/mingw32/4.6.0/../../../../include
c:\snowfishroot\mingw\bin\../lib/gcc/mingw32/4.6.0/include-fixed
End of search list.
GNU C++ (MinGW GCC 4.5) version 4.6.0 20101218 (experimental) mingw-20090616
(mingw32)
compiled by GNU C version 4.6.0 20101218 (experimental) mingw-20090616, GMP
version 5.0.1, MPFR version 3.0.0-p3, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 513ac793d2c1b06037d476024361a9f7
ice.cpp: In function 'void foo(long double*, char*&) [with _T = char, va_list =
char*]':
ice.cpp:14:28: instantiated from here
ice.cpp:7:5: internal compiler error: in tsubst_copy, at cp/pt.c:11682
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
maybe I should file another PR ?
