https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95677
Bug ID: 95677
Summary: undefined reference to `(anonymous namespace)::xx'
Product: gcc
Version: lto
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: sujian.liu at huawei dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Created attachment 48731
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48731&action=edit
dejagnu/testsuite-7.3/g++.old-deja/g++.ns/extern1.C
When compile with lto,it will be reported the following error:
./riscv32-unknown-elf-gcc dejagnu/testsuite-7.3/g++.old-deja/g++.ns/extern1.C
-o extern1.exe -flto
/home/lsj/gits/gcc_10_1_0/build/hcc_riscv32/riscv32_elf_build_dir/hcc_riscv32/bin/../lib/gcc/riscv32-unknown-elf/10.1.0/../../../../riscv32-unknown-elf/bin/ld:
/tmp/extern1.exe.m1gfd6.ltrans0.ltrans.o: in function `.L0 ':
<artificial>:(.text+0x6): undefined reference to `(anonymous namespace)::xx'
/home/lsj/gits/gcc_10_1_0/build/hcc_riscv32/riscv32_elf_build_dir/hcc_riscv32/bin/../lib/gcc/riscv32-unknown-elf/10.1.0/../../../../riscv32-unknown-elf/bin/ld:
<artificial>:(.text+0xa): undefined reference to `(anonymous namespace)::xx'
collect2: error: ld returned 1 exit status
It seems that lto can't deal with the extern variable in the namespace.
The testcase which is one of deja in testsuite-7.3 will be attached.
