[binutils-gdb] Fix undefined arithmetic operations detected by -fsanitize=undefined when running readelf on fuzzed binaries.

[sergiodj+buildbot at redhat dot com]

*** TEST RESULTS FOR COMMIT c8071705c69a13d237aeca4709bf91deaff7e5cb ***

Author: Nick Clifton <nickc@redhat.com>
Branch: master
Commit: c8071705c69a13d237aeca4709bf91deaff7e5cb

Fix undefined arithmetic operations detected by -fsanitize=undefined when running readelf on fuzzed binaries.
	PR binutils/17512
	* dwarf.c (display_debug_loc): Pacify the undefined behaviour
	sanitizer by simplifying address difference calculation.
	(struct Frame_Chunk): Change type of cfa_offset to dwarf_vma in
	order to avoid arithmetic overflows.
	(frame_display_row): Cast cfa_offset before printing it.
	(display_debug_frames): Likewise.
	Check for an unexpected segment size.
	Chnage type of 'l' local to dwarf_vma and cast it back to an int
	when printing.
	(process_cu_tu_index): Tighten check for an invalid ncols value.
	* readelf.c (process_corefile_note_segment): Check for
	inote.descdata extending beyond the end of the section.
	(process_v850_notes): Likewise.