[Bug ld/28138] [2.37 Regression][bisected] Linker plugin complains about "malformed archive" on thin archines

[slyfox at inbox dot ru]

https://sourceware.org/bugzilla/show_bug.cgi?id=28138

--- Comment #8 from Sergei Trofimovich <slyfox at inbox dot ru> ---
Here is the full reproducer: 1200 interdependent files required for a thin
archive.

gcc-11.1.0 + binutils-2.36.1:
  $ ./mk.bash
  thin archive for 1200
  176

gcc-11.1.0 + binutils-2.37:
  $ ./mk.bash
  thin archive for 1200
/usr/lib/gcc/x86_64-pc-linux-gnu/11.1.0/../../../../x86_64-pc-linux-gnu/bin/ld:
//libthin.a: error adding symbols: malformed archive

Full script:

$ cat mk.bash

#!/bin/bash

rm -rf -- libthin.a main.o m s

mkdir -p s

cc=x86_64-pc-linux-gnu-gcc
ar=x86_64-pc-linux-gnu-ar

nfiles=${1-1200}

for i in `seq 1 ${nfiles}`; do
    prev_i=$((i - 1))
    printf "extern int a${prev_i}(void); int a${i}(void) { return 1 +
a${prev_i}(); }" > s/a${i}.c
    $cc -c s/a${i}.c -o s/a${i}.o
done

printf "int a0(void) { return 0; }; extern int a${nfiles}(void); int main() {
return a${nfiles}(); }" > main.c
$cc -c main.c -o main.o

# thin archive
echo "thin archive for $nfiles" >&2
$ar crsT libthin.a s/a*.o

$cc -pthread -o m -rdynamic -m64 main.o ${PWD}/libthin.a

./m; echo $?

-- 
You are receiving this mail because:
You are on the CC list for the bug.