https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104712
Bug ID: 104712
Summary: -fkeep-inline-functions causing link errors (debian
but not godbolt?)
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ajrh at ajrh dot net
Target Milestone: ---
For use with gcov, I'm trying to use the --keep-inline-functions flag, as
suggested in the GCC manual, but it's causing a lot of link errors on various
types of objects. The undefined references were my initial problem, I'm not
sure about the relocation errors also.
Possibly it's config-specific, as I made one example via creduce, which gives
the error below, but it appears to compile fine in godbolt. Debian config
attached below also.
--------------------
template <typename T> void g(T, T) { }
class C {
static int XYZZY;
int x;
void f() { g(x, XYZZY); }
};
int main()
{
return 0;
}
--------------------
This compiles and runs cleanly with 'g++ -Wall foo.cpp && a.out'
But with the flag added:
g++ -Wall -fkeep-inline-functions foo.cpp
/usr/bin/ld: /tmp/ccewh7OH.o: warning: relocation against `_ZN1C5XYZZYE' in
read-only section `.text._ZN1C1fEv[_ZN1C1fEv]'
/usr/bin/ld: /tmp/ccewh7OH.o: in function `C::f()':
foo.cpp:(.text._ZN1C1fEv[_ZN1C1fEv]+0xe): undefined reference to `C::XYZZY'
/usr/bin/ld: warning: creating DT_TEXTREL in a PIE
collect2: error: ld returned 1 exit status
--------------------
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/11/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 11.2.0-14'
--with-bugurl=file:///usr/share/doc/gcc-11/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix=/usr
--with-gcc-major-version-only --program-suffix=-11
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib
--enable-libphobos-checking=release --with-target-system-zlib=auto
--enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet
--with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32
--enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none=/build/gcc-11-y1lmfE/gcc-11-11.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-11-y1lmfE/gcc-11-11.2.0/debian/tmp-gcn/usr
--without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
--with-build-config=bootstrap-lto-lean --enable-link-serialization=2
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 11.2.0 (Debian 11.2.0-14)
