-static-pie ELF binary segfaults on aarch64

[sicherha]

When building mold 1.1.1 (plus patch a20e3b8) for Fedora on aarch64, the hello-static-pie test case fails because the output binary crashes with a segmentation fault. This is unrelated to the problem addressed by a20e3b8, because glibc >= 2.35 is present on the system.

Unfortunately I don't have interactive access to aarch64 hardware, so all I can provide right now is a build log: https://download.copr.fedorainfracloud.org/results/sicherha/mold-aarch64-experiment/fedora-rawhide-aarch64/03637430-mold/builder-live.log.gz

+ CC=gcc
+ CXX=g++
++ basename ./elf/hello-static-pie.sh .sh
+ testname=hello-static-pie
Testing hello-static-pie ... + echo -n 'Testing hello-static-pie ... '
++ dirname ./elf/hello-static-pie.sh
+ cd ./elf/../..
++ pwd
+ mold=/builddir/build/BUILD/mold-1.1.1/mold
+ t=out/test/elf/hello-static-pie
+ mkdir -p out/test/elf/hello-static-pie
++ uname -m
+ '[' aarch64 = riscv64 ']'
+ gcc -o out/test/elf/hello-static-pie/exe -xc -
+ echo 'int main() {}'
+ ldd out/test/elf/hello-static-pie/exe
+ grep -q ld-musl
+ ldd --version
+ grep -Pq 'Copyright \(C\) 202[2-9]'
+ cat
+ gcc -o out/test/elf/hello-static-pie/a.o -c -xc - -fPIE
+ gcc -B. -o out/test/elf/hello-static-pie/exe out/test/elf/hello-static-pie/a.o -static-pie
+ out/test/elf/hello-static-pie/exe
./elf/hello-static-pie.sh: line 31:  3473 Segmentation fault      (core dumped) $t/exe

[rui314]

Thanks, I'll investigate. -static-pie is a relatively new feature, and it's overall a bit buggy.