Re: Discussion about why GNU/Linux system upgrades cause old programs to break

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  > GCC 14 considers certain K&R C constructs an error in C99 mode and
  > newer, whereas GCC up to 13 merely warned for them in those same modes.
  > See https://gcc.gnu.org/gcc-14/porting_to.html#warnings-as-errors
  > including on details how to recover old behavior.

I looked at that page, and found many instances of old practices
that now cause errors.  These are some examples.

    Implicit int types (-Werror=implicit-int)

    Type checking on pointer types (-Werror=incompatible-pointer-types)

    Implicit function declarations (-Werror=implicit-function-declaration)

What arguments can restore GCC 13 behavior for these cases, and the
other cases described there?

-- 
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)