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albinofrenchy
on Sept 10, 2017
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Main is usually a function, so when is it not? (20...
This isn't that conclusive of a test -- uninitialized memory is 0 relatively often.
clarry
on Sept 10, 2017
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https://github.com/gcc-mirror/gcc/blob/4bec7283cda24b180ea7a...
pjscott
on Sept 10, 2017
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Okay,
that
is conclusive. (And I'm pleasantly surprised by how readable GCC's source code is.)
kaushiks
on Sept 10, 2017
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This has nothing to do with memory. The x86_64 ABI returns values from functions in the RAX register.
albinofrenchy
on Sept 10, 2017
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Sure; same point applies though -- just because 0 happens to be in RAX doesn't mean it's defined behavior.
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