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Subject: Re: Non-dwarf blocks detected by valgrind
To: Paul Richard Thomas <paul.richard.thomas@gmail.com>
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From: Tobias Burnus <burnus@net-b.de>
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Date: Sat, 23 Jan 2021 11:51:09 +0100
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Hi Paul,

On 23.01.21 09:52, Paul Richard Thomas via Fortran wrote:
> Has anybody else seen this popping up in executables produced from master?
>
> --1627334-- Ignoring non-Dwarf2/3/4 block in .debug_info

This error looks as if Valgrind does not support DWARF5. Try to compile 
with -gdwarf-4.

GCC switched to defaulting to DWARF 5 in GCC 11, cf. 
https://gcc.gnu.org/g:3804e937b0e252a7e42632fe6d9f898f1851a49c (Mark 
Wielaard; committed 17 Jan 2021).

(Not yet documented in the release notes.)

Cheers,

Tobias