Created attachment 29028 [details] source code which fails to compile Hi, I've found a possible bug in gcc. I've attached a source code which fails to compile with: 'g++ -c -O2 inline_problem.cpp' Gcc prints: inline_problem.cpp: In function ‘void bar(Foo&)’: inline_problem.cpp:24:60: error: inlining failed in call to always_inline ‘Delegate<void(PAR)> delegate(OBJECT&, void (OBJECT::*)(PAR)) [with OBJECT = Foo; PAR = int]’: mismatched arguments inline_problem.cpp:35:27: error: called from here The code compiles, if you do any of the following: * remove '-O2' * replace 'sint' with 'int' at line 32 * remove one of the 'delegate' calls from the function 'bar' It fails to compile with 4.4.6, 4.6.3, 4.7.2. However, it compiles with 4.5.3. g++-4.7 -v prints: Using built-in specs. COLLECT_GCC=g++-4.7 COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 4.7.2-4' --with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs --enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.7 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.7 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --enable-objc-gc --with-arch-32=i586 --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 4.7.2 (Debian 4.7.2-4)
Works on the turnk.
I can confirm that mainline is fine. Shall we close this?
Sounds like dup of PR52888. Richard, is that safely backportable, or not?
Yes, looks safe to backport, and indeed a dup. *** This bug has been marked as a duplicate of bug 52888 ***