[Bug c++/20019] incorrect overflow warning

["manu at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #11 from manu at gcc dot gnu dot org  2006-11-25 13:51 -------
I don't get the warning with current mainline (revision 119143).

Still, I would like to keep this bug around since it may be interesting that
Wconversion emits a warning for the int->char conversion. I would like to hear
some opinions about this. My current patch does the following:

manuel@gcc05:~$ local/bin/g++ -fsigned-char pr20019.cpp
manuel@gcc05:~$ local/bin/g++ -fno-signed-char pr20019.cpp
manuel@gcc05:~$ local/bin/g++ -fno-signed-char -Wconversion pr20019.cpp
pr20019.cpp:9: warning: negative integer implicitly converted to unsigned type
pr20019.cpp:13: warning: negative integer implicitly converted to unsigned type
manuel@gcc05:~$ local/bin/g++ -fsigned-char -Wconversion pr20019.cpp
pr20019.cpp:3: warning: conversion to ?char? alters ?int? constant value
pr20019.cpp:7: warning: conversion to ?char? alters ?int? constant value
pr20019.cpp:11: warning: conversion to ?char? alters ?int? constant value

Does this seem correct to all of you?


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
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                 CC|                            |manu at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20019