In:
enum A {b = -1, c, d};
bool foo(A a) { return a < b || a > d; }
you get:
foo.cc: In function `bool foo(A)':
foo.cc:2: warning: comparison is always false due to limited range of data type
If an enum is always necessarily an unsigned type then the initialization of b
should get a warning or error. If it has the range of its assigned values (which
I think is what the standard says, though I'm not sure) and hence is a signed
type if any of the assigned values is negative then the issued warning is
incorrect.
Ivan
--
Summary: bad warning
Product: gcc
Version: 3.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: igodard at pacbell dot net
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20677
