Does Cygwin's GCC support 64-bit constants?

Nate Iverson
Tue Mar 2 23:16:00 GMT 2004

I'm getting the following warning message when I try to compile source code that contains 0xFF00000000000000 as a constant.
warning: integer constant is too large for "long" type

Cywin's GCC appears to have 64-bit integer support since there are no warnings/errors for uint64_t variables.

Below are the gcc details:
$ gcc -v
Reading specs from /bin/../lib/gcc-lib/i686-pc-cygwin/3.3.1/specs
Configured with: /GCC/gcc-3.3.1-3/configure --with-gcc --with-gnu-ld --with-gnu-as --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --libdir=/usr/lib --libexecdir=/usr/sbin --mandir=/usr/share/man --infodir=/usr/share/info --enable-languages=c,ada,c++,f77,pascal,java,objc --enable-libgcj --enable-threads=posix --with-system-zlib --enable-nls --without-included-gettext --enable-interpreter --enable-sjlj-exceptions --disable-version-specific-runtime-libs --enable-shared --disable-win32-registry --enable-java-gc=boehm --disable-hash-synchronization --verbose --target=i686-pc-cygwin --host=i686-pc-cygwin --build=i686-pc-cygwin
Thread model: posix
gcc version 3.3.1 (cygming special)

I have also tried to cast the constant (long long)0xFF00000000000000 -- it didn't change anything. Additionally, I have compiled this on Linux and QNX with no issues.

Any insight is appreciated,

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