https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120508
Bug ID: 120508
Summary: Undefined symbols and relocation truncated to fit
IMAGE_REL_AMD64_ADDR32NB with large translation unit
making heavy use of templates with -O0
Product: gcc
Version: 15.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: krizdjali at gmail dot com
Target Milestone: ---
Created attachment 61561
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61561&action=edit
Compressed preprocessed repro
When compiling the attached preprocessed C++ file with the GCC build provided
by MSYS2's UCRT64 environment with g++ -g -O0, an object file is produced that
will cause linker errors.
Inspecting the symbols with nm -Cg shows many templated functions as U,
whereas:
* when using -O1 or -Og they're not listed at all (at least for the ones I've
checked).
* when using GCC on Ubuntu, they're listed as W.
* when using Clang, they're listed as T.
* when using MSVC, they're listed as T.
* when commenting out the last 54 add<vsg::Whatever>() calls in
ObjectFactory::ObjectFactory, they're listed as T.
Attempting to consume the object file when linking emits many (around two
thousand) undefined symbol errors, and ten relocation truncated to fit:
IMAGE_REL_AMD64_ADDR32NB against ... messages (as well as a message saying
additional relocation overflows omitted from the output).
The attached file is large, but doing anything to make it smaller makes the
errors go away. The size appears to be a necessary condition to trigger the
problem. I compressed the file to fit the 1000 KB size limit the bug report
form warns about.
This might be a binutils bug rather than a GCC bug, but I don't know how to
prove that one way or the other.
The full version information is:
$ g++ -v
Using built-in specs.
COLLECT_GCC=C:\tools\msys64\ucrt64\bin\g++.exe
COLLECT_LTO_WRAPPER=C:/tools/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/15.1.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../gcc-15.1.0/configure --prefix=/ucrt64
--with-local-prefix=/ucrt64/local
--with-native-system-header-dir=/ucrt64/include --libexecdir=/ucrt64/lib
--enable-bootstrap --enable-checking=release --with-arch=nocona
--with-tune=generic --enable-mingw-wildcard
--enable-languages=c,lto,c++,fortran,ada,objc,obj-c++,jit --enable-shared
--enable-static --enable-libatomic --enable-threads=posix --enable-graphite
--enable-fully-dynamic-string --enable-libstdcxx-backtrace=yes
--enable-libstdcxx-filesystem-ts --enable-libstdcxx-time
--disable-libstdcxx-pch --enable-lto --enable-libgomp --disable-libssp
--disable-multilib --disable-rpath --disable-win32-registry --disable-nls
--disable-werror --disable-symvers --with-libiconv --with-system-zlib
--with-gmp=/ucrt64 --with-mpfr=/ucrt64 --with-mpc=/ucrt64 --with-isl=/ucrt64
--with-pkgversion='Rev5, Built by MSYS2 project'
--with-bugurl=https://github.com/msys2/MINGW-packages/issues --with-gnu-as
--with-gnu-ld --disable-libstdcxx-debug --enable-plugin
--with-boot-ldflags=-static-libstdc++ --with-stage1-ldflags=-static-libstdc++
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.1.0 (Rev5, Built by MSYS2 project)
