From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7028 invoked by alias); 8 Dec 2009 23:37:30 -0000 Received: (qmail 6965 invoked by uid 48); 8 Dec 2009 23:37:17 -0000 Date: Tue, 08 Dec 2009 23:37:00 -0000 Subject: [Bug c++/42338] New: [c++0x] ICE on decltype usage with templates X-Bugzilla-Reason: CC Message-ID: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "onay at ee dot bilkent dot edu dot tr" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2009-12/txt/msg00905.txt.bz2 The following code causes an ICE with segmentation fault: ---------------------------------------------------------------------- #include #include template< typename T1 > void vadd(const std::vector< T1 > &a, decltype(a[0]) t) { std::cout << "-> ICE \n"; } void vadd(const std::vector< int > &a, decltype(a[0]) t) { std::cout << " compiles \n"; } int main() { std::vector< int > a; std::vector< float > b; int c; vadd(b,c); // leads to ICE // vadd(a,c); // compiles } ---------------------------------------------------------------------- Output of "g++ -v -save-temps gcc-error-src.cpp -o gcc-error -std=c++0x" yields: Using built-in specs. Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.2-3' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --with-arch-32=i486 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.4.2 (Debian 4.4.2-3) COLLECT_GCC_OPTIONS='-v' '-save-temps' '-o' 'gcc-error' '-std=c++0x' '-shared-libgcc' '-mtune=generic' /usr/lib/gcc/x86_64-linux-gnu/4.4.2/cc1plus -E -quiet -v -D_GNU_SOURCE gcc-error-src.cpp -mtune=generic -std=c++0x -fpch-preprocess -o gcc-error-src.ii ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/4.4.2/../../../../x86_64-linux-gnu/include" ignoring nonexistent directory "/usr/include/x86_64-linux-gnu" #include "..." search starts here: #include <...> search starts here: /usr/include/c++/4.4 /usr/include/c++/4.4/x86_64-linux-gnu /usr/include/c++/4.4/backward /usr/local/include /usr/lib/gcc/x86_64-linux-gnu/4.4.2/include /usr/lib/gcc/x86_64-linux-gnu/4.4.2/include-fixed /usr/include End of search list. COLLECT_GCC_OPTIONS='-v' '-save-temps' '-o' 'gcc-error' '-std=c++0x' '-shared-libgcc' '-mtune=generic' /usr/lib/gcc/x86_64-linux-gnu/4.4.2/cc1plus -fpreprocessed gcc-error-src.ii -quiet -dumpbase gcc-error-src.cpp -mtune=generic -auxbase gcc-error-src -std=c++0x -version -o gcc-error-src.s GNU C++ (Debian 4.4.2-3) version 4.4.2 (x86_64-linux-gnu) compiled by GNU C version 4.4.2, GMP version 4.3.1, MPFR version 2.4.1-p2. warning: MPFR header version 2.4.1-p2 differs from library version 2.4.2. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 76c61736f716d7c937923f7eb86174cd gcc-error-src.cpp:19: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See for instructions. -- Summary: [c++0x] ICE on decltype usage with templates Product: gcc Version: 4.4.2 Status: UNCONFIRMED Severity: major Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: onay at ee dot bilkent dot edu dot tr http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42338