elfhack gives me the following error: elfhack: /home/jrmuizel/src/mozilla-central/build/unix/elfhack/elf.cpp:285: Elf::Elf(std::ifstream&): Assertion `segment->getFileSize() == phdr.p_filesz' failed.

Did you build beta11 or mozilla-central ? If the former, this could be either bug 629638 or 629639, in which case it's fixed on mozilla-central.

I was using the git repository of mozilla-central as of hg commit 7698f12bbe7d

please attach test.so (you will have to build it by hand, as the failure will remove it)

please also give the command lines used to build test.so and test.o

> Blocks: 633269 Strictly speaking, this is not entirely true. There are versions of gold that work fine with elfhack.

c++ -fno-rtti -Wall -Wpointer-arith -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wcast-align -Wno-invalid-offsetof -Wno-variadic-macros -Werror=return-type -Wno-long-long -fno-strict-aliasing -fshort-wchar -pthread -pipe -fexceptions -DNDEBUG -DTRIMMED -g -Os -freorder-blocks -fno-omit-frame-pointer -fPIC -shared -Wl,-z,defs -Wl,-h,test.so -o test.so test.o

I can reproduce with your test.so. And the good news is that patches from bug 629635 fix it.