When facing compressed debuginfo sections (-Wl,--compress-debug-sections=zlib
used on a hello world example) you get

> valgrind ./a.out 
==23687== Memcheck, a memory error detector
==23687== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==23687== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
==23687== Command: ./a.out
==23687== 
--23687-- WARNING: Serious error when reading debug info
--23687-- When reading debug info from /tmp/a.out:
--23687-- Ignoring non-Dwarf2/3/4 block in .debug_info
--23687-- WARNING: Serious error when reading debug info
--23687-- When reading debug info from /tmp/a.out:
--23687-- Last block truncated in .debug_info; ignoring
--23687-- WARNING: Serious error when reading debug info
--23687-- When reading debug info from /tmp/a.out:
--23687-- parse_CU_Header: is neither DWARF2 nor DWARF3 nor DWARF4
...