Re: [Emacs-diffs] master 6cd5678: Clarify compiler-pacifier in frame.c

[Óscar Fuentes]

Eli Zaretskii <address@hidden> writes:

>> For these tools it is helpful to say that a variable is not
>> initialized, because that helps catch use-before-set errors. An
>> explicit initialization would cause these use-before-set bugs to go
>> uncaught by these debugging tools.
>
> What debugging tools can make a significant difference here, and how
> easy/practical is it to use them?  I very much doubt they will catch
> every use-before-set bug anyway.

Valgrind tracks each byte at the machine instruction level.

Given the complexity of the Emacs C code, IMAO it is very useful to test
for this type of nasty errors. I dislike hacks that pollute the source
code, but on this case it is warranted.