Re: Compiler program platform-independant?
On 01/07/2011 12:05 PM, Screamin Lord Byron wrote:
On Thu, 06 Jan 2011 15:24:34 -0800, markspace wrote:
On 1/6/2011 3:05 PM, Julien ?LIE wrote:
Suppose I have test.java and I want to compile it with Java SE 6 Update
23 on different OSes and hardwares; would it generate the same
test.class file ("the same" means that it is exactly the same file --
same MD5 checksum for instance).
I think everyone has consistently been saying 1) we don't know, and 2)
Sun/Oracle doesn't seem to make any such guarantee.
I think you are likely to get exactly the same byte codes, but I
wouldn't count on it. If your process will absolutely break due to
different byte codes, make a more robust process.
But why would it break anyway? Maybe it's a bad comparison, but I compare
that to, say, compiling C code with different C compilers or with different
optimization options of the same compiler.
Comparing the binary output of class files, perhaps for backup purposes
or something.
--
Beware of bugs in the above code; I have only proved it correct, not
tried it. -- Donald E. Knuth
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