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From: Michael S <already5chosen@yahoo.com>
Newsgroups: comp.lang.c
Subject: Re: on allowing "int a" definition everywhere
Date: Wed, 21 Aug 2024 16:54:54 +0300
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On Wed, 21 Aug 2024 10:01:12 -0300
Thiago Adams <thiago.adams@gmail.com> wrote:

> 
> For this type of error you need my static analyzer. (cake) :D
> 

Unnecessary. MSVC -W4 gives a warning.

#include <cstdio>

void foo()
{
  FILE* f = fopen("file1.txt", "r");
  if (FILE* f = fopen("file2.txt", "r")) {
    fclose(f);
  }
  if (f)
    fclose(f);
}


scopes.cpp(6): warning C4456: declaration of 'f' hides previous local
declaration scopes.cpp(5): note: see declaration of 'f'