Re: c/7860: few new suggested warnings

[Andrew Pinski <pinskia at physics dot uc dot edu>]

The following reply was made to PR c/7860; it has been noted by GNATS.

From: Andrew Pinski <pinskia@physics.uc.edu>
To: jhi@iki.fi
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c/7860: few new suggested warnings
Date: Sun, 8 Sep 2002 18:57:44 -0400

 Here is a copy of the file since the file was in macbinary format that 
 some people cannot decode:
 -Wcppcomment
 
          Warn about C++ style comments // like this.
 
 -Wgnuextensions
 
          Warn about the use of any GNU extensions.
 
 -Wpointer-implicit-sign
 
          Warn if a pointer is implicitly cast between signed
          and unsigned, for example:
 
              int foo(unsigned char *s) {
                  ...
              }
                  ...
                  char *s;
                  ...
                  foo(s);
 
          (enabled by -ansi)
 
 -Wenum-implicit-int
 
          Warn if enums are implicitly used as integers, for example
 
          enum e { E1, E2, E3 };
          ...
          enum e e1 = 0;  /* Warn. */
          enum e e2 = E2;
          enum e e3, e4;
          e3 = e1 + 1;    /* Warn. */
          e2++;           /* Warn. */
          e4 = e3 & ~E2;  /* Warn. */
 
 -Wenum-trailing-comma
 
          Warn if enum declaration has a trailing comma.
 
          (enabled by -pedantic)
 
 -Wcpp-spurious-tokens
 
          Warn if there are any unnecessary tokens after preprocessor 
 commands,
          for example
 
              #endif STUFF
 
          (enabled by -pedantic)