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Hello everyone, I'm trying to port GCC since 1 month to my operating system right now. The binary I compiled is running correctly under my operating system (gcc - version works) but when I try to run a real compilation, gcc crash with a page error (0x0000000004) in the function et_splay: the passed argument (struct et_occ *) is a NULL pointer.
I'm using Newlib as a C library and sbrk seems to function correctly.

Thank you in advance for your help
If you need more information, don't hesitate to ask me.

Maybe you already figured this out, but I thought I would respond since I found this thread after running into the exact same problem.

The problem was that I wasn't invoking global constructors on process start. This caused the pool_allocator used in GCC's et-forest.c to be initialized with garbage values, which in turn led to et_new_tree() allocating too little memory for new et_nodes, causing them to overlap.

It was indeed exactly that