Some shared object constructors are not called #139
Description
Problem: only 1 of 2 constructors in shared object are called. Both constructors are called when library is linked statically. (Both destructors are called in all cases). Not sure if this problem is related to GCC or elf.library or something else.
Using GCC 11.2. Here is a small example:
-- lib.c
#include <stdio.h>
void __attribute__((constructor(101))) ctor()
{
printf("%s\n", __func__);
}
void __attribute__((destructor(101))) dtor()
{
printf("%s\n", __func__);
}
void __attribute__((constructor(102))) ctor2()
{
printf("%s\n", __func__);
}
void __attribute__((destructor(102))) dtor2()
{
printf("%s\n", __func__);
}
int function(int x)
{
printf("%s %d\n", __func__, x);
return x;
}
-- main.c
#include <stdio.h>
int function(int);
int main()
{
int result = function(123);
printf("%s result %d\n", __func__, result);
return 0;
}
-- makefile
CC=gcc
all:
$(CC) -o lib.o -c lib.c -fPIC
$(CC) -o libf.so lib.o -shared
ar cruv libf.a lib.o
ranlib libf.a
$(CC) -o test_dyn main.c -use-dynld -L. -lf -athread=native
$(CC) -o test_static main.c -L. -lf -athread=native
-- output
ctor2 call is missing here:
constructor> test_dyn
ctor
function 123
main result 123
dtor2
dtor
constructor> test_static
ctor
ctor2
function 123
main result 123
dtor2
dtor