Myers Andrew NGA-AES USA CTR wrote:
We are running GCC v3.4.4 on the Red Hat Enterprise Linux 4 64-Bit
platform. Questions specific to the 64-bit version are...
1) Does v4.4.0 support the Red Hat Enterprise Linux 4 (64-Bit) platform?
It should, but you could ask the vendor for a more definitive answer.
2) Is code developed under GCC v3.4.4 guaranteed to compile under GCC
v4.4.0?
GCC doesn't offer any hard guarantees. The license explains this.
That said, the answer is no. GCC tries to offer backwards compatibility
while adhering to the various standards that govern the languages it
implements, but in some cases you will have to change your code to be
able to use GCC-4.4. The common case is code that is not standards
compliant might compile under GCC-3.4 but because GCC-4.4 is more strict
with regard to the standards it implements than previous versions, the
code would be rejected.
David Daney
