[Bug c++/19437] New: wrong warning when assigning negative value to int

[oliverst at online dot de]

The following code compiled as C++ (does not happen when compiled as C), issues
a wrong warning:

void test()
{
 	 unsigned int i = 0; 	 
 	 int val = i ? i : -1;
}

$ gcc -c test.cpp
test.cpp: In function `void test()':
test.cpp:4: warning: converting of negative value `-0x000000001' to `unsigned int'

My GCC version:

Configured with: ../gcc/configure --with-gcc --with-gnu-ld --with-gnu-as
--host=mingw32 --target=mingw32 --prefix=/mingw --enable-threads --disable-nls
--enable-languages=c,c++,f77,ada,objc,java --disable-win32-registry
--disable-shared --enable-sjlj-exceptions --enable-libgcj --disable-java-awt
--without-x --enable-java-gc=boehm --disable-libgcj-debug --enable-interpreter
--enable-hash-synchronization --enable-libstdcxx-debug
Thread model: win32
gcc version 3.4.2 (mingw-special)

I does also happen with MinGW GCC 3.3.3 and 4.0.0 (20040925) and linux GCC 3.2.

-- 
           Summary: wrong warning when assigning negative value to int
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: oliverst at online dot de
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19437