Bug#128950: gcc-3.0: -Wconversion should be split into two distinct flags

[Agthorr <agthorr@barsoom.org>]

Package: gcc-3.0
Version: 1:3.0.3-1
Severity: normal

The -Wconversion option to gcc is documented as doing two things:

------------------------------------------------------------------------
`-Wconversion'
     Warn if a prototype causes a type conversion that is different
     from what would happen to the same argument in the absence of a
     prototype.  This includes conversions of fixed point to floating
     and vice versa, and conversions changing the width or signedness
     of a fixed point argument except when the same as the default
     promotion.

     Also, warn if a negative integer constant expression is implicitly
     converted to an unsigned type.  For example, warn about the
     assignment `x = -1' if `x' is unsigned.  But do not warn about
     explicit casts like `(unsigned) -1'.
------------------------------------------------------------------------

It'd be nice if these two behaviors were two controlled via two
separate flags.  The second behavior would have caught a bug I've been
hunting for hours, while the first behavior is very undesirable to me
(and useless since I also compile with -Wstrict-prototypes).

-- Agthorr

-- System Information
Debian Release: 3.0
Architecture: i386
Kernel: Linux eleutheromania 2.4.16 #1 Tue Dec 4 11:20:43 PST 2001 i686
Locale: LANG=C, LC_CTYPE=

Versions of packages gcc-3.0 depends on:
ii  binutils                2.11.92.0.12.3-4 The GNU assembler, linker and bina
ii  cpp-3.0                 1:3.0.3-1        The GNU C preprocessor.
ii  gcc-3.0-base            1:3.0.3-1        The GNU Compiler Collection (base 
ii  libc6                   2.2.4-7          GNU C Library: Shared libraries an
ii  libgcc1                 1:3.0.3-1        GCC support library.