Hi Patrick & Salvatore, hi all,
Patrick Begou wrote:
I met this problem many times on a really large application.
Can you (plural) try the following workaround? -fuse-ld=mold ? [1]
If it works, please report back. (It seems to handle the reduced testcase.)
* * *
For Salvatore's original issue: He provided me with a large testcase,
which took a while to reduce. [2]
→ https://gcc.gnu.org/PR122432
Tobias
[1] 'mold' is an alternative linker; you need a newer version than end
of Feb 2024; distros also package this linker; should be enough to be in
the $PATH
[2] I used
https://gcc.gnu.org/wiki/A_guide_to_testcase_reduction#Legacy_reduction_tools,
including to reduce the number of .o files in the linked-in archive. The
testscript not only build it, but also run it checking for the expected
run-time error. A large library, polymorphic types and a complex
hierarchy didn't speed it up, but at the end it was MPI's use of common
symbols that caused the issue for some reasons.
