[Bug c/58283] Incorrect debug info when precompilation is on
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58283
Richard Biener rguenth at gcc dot gnu.org changed:
What|Removed |Added
Status|UNCONFIRMED |WAITING
Last reconfirmed||2013-09-02
Ever confirmed|0 |1
--- Comment #1 from Richard Biener rguenth at gcc dot gnu.org ---
I get
/tmp/xtest make
g++-4.8 -gdwarf-2 -g3 -O0 -DPRECOMP `wx-config --cflags` -o precomp1.hpp.gch -c
precomp1.hpp
/bin/sh: wx-config: command not found
g++-4.8 -gdwarf-2 -g3 -O0 -DPRECOMP `wx-config --cflags` -o xtest mainmenu.cpp
/bin/sh: wx-config: command not found
nm -C xtest | grep main
U __libc_start_main@@GLIBC_2.2.5
00400620 T main
addr2line -e xtest $(nm -C xtest | grep ' main$' | awk '{print $1}')
/tmp/xtest/mainmenu.cpp:3
Same with including pecomp1.hpp from mainmenu.cpp.
(so, what does wx-config --cflags return?)
Note that you are testing GCC 4.8, not 4.7.
[Bug c/58283] Incorrect debug info when precompilation is on
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58283 --- Comment #2 from Jan Engelhardt jengelh at inai dot de --- Oh, -DPRECOMP `wx-config --cflags` is a remnant and may be removed from the Makefile. The issue continues to be reproducible. It appears on openSUSE Factory's gcc 4.8. Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/4.8/lto-wrapper Target: x86_64-suse-linux Configured with: ../configure --prefix=/usr --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64 --enable-languages=c,c++,objc,fortran,obj-c++,java,ada --enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.8 --enable-ssp --disable-libssp --disable-plugin --with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux' --disable-libgcj --disable-libmudflap --with-slibdir=/lib64 --with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch --enable-version-specific-runtime-libs --enable-linker-build-id --program-suffix=-4.8 --enable-linux-futex --without-system-libunwind --with-arch-32=i586 --with-tune=generic --build=x86_64-suse-linux Thread model: posix gcc version 4.8.1 20130806 [gcc-4_8-branch revision 201525] (SUSE Linux)
[Bug c/58283] Incorrect debug info when precompilation is on
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58283 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|WAITING |RESOLVED Resolution|--- |INVALID --- Comment #3 from Richard Biener rguenth at gcc dot gnu.org --- As said, it works for me. Btw, including a PCH indirectly is not supported: A precompiled header file can be used only when these conditions apply: ... @item A precompiled header can't be used once the first C token is seen. You can have preprocessor directives before a precompiled header; you cannot include a precompiled header from inside another header.
[Bug c/58283] Incorrect debug info when precompilation is on
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58283 --- Comment #4 from Jan Engelhardt jengelh at inai dot de --- you cannot include a precompiled header from inside another header. Ok. So, this limitation was properly implemented in gcc 4.7, which simply skipped over the indirectly-included .gch file as if it did not exist. Safe thing to do. In gcc 4.8 however, the indirectly-included .gch *is* used rather than skipped, which I base upon the observation that compile time goes down significantly for projects with larger amounts of C++ code and the same indirect-inclusion scheme.
[Bug c/58283] Incorrect debug info when precompilation is on
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58283 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added CC|rguenther at suse dot de |rguenth at gcc dot gnu.org --- Comment #5 from Richard Biener rguenth at gcc dot gnu.org --- You mean the fix for PR38987?
[Bug c/58283] Incorrect debug info when precompilation is on
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58283 --- Comment #6 from Jan Engelhardt jengelh at inai dot de --- It seems to be ineffective.
