https://sourceware.org/bugzilla/show_bug.cgi?id=19803
--- Comment #21 from martin.koegler at chello dot at ---
(In reply to Nick Clifton from comment #19)
> OK - this revised patch contains an attempt to fix this function as well.
> Please could you give it a try and let me know the results.
Please apply that patch - works for a larger real world testcase (including gcc
rebuild).
There are a few corner cases:
* If the startup symbol is not found, gc-section produces different binaries,
because it does not protect the startup location (see my last comment). This
affects ELF too:
t.c
====
int test()
{
return 0;
}
====
gcc -c t.c
ld -o t t.o /usr/lib/gcc/x86_64-linux-gnu/4.9.2/crtbegin.o
/usr/lib/gcc/x86_64-linux-gnu/4.9.2/crtend.o --gc-sections --print-gc-sections
ld -o t1 t.o /usr/lib/gcc/x86_64-linux-gnu/4.9.2/crtbegin.o
/usr/lib/gcc/x86_64-linux-gnu/4.9.2/crtend.o --print-gc-sections
t and t1 will start at the same location, which contains a different function
* SEH inhibit the removal of functions. This does not break anything.
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