Which version of gcc does binary packages use?

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The above compiling flags causes some problem: icegridnode crashes-O -fstrict-aliasing
Does any binary release of Ice-3.3.0 compiled with GCC-4 or above.
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The above compiling flags causes some problem: icegridnode crashes-O -fstrict-aliasing
Comments
The binary packages are built with the GCC version included in the supported Linux distributions, that is:
Cheers,
Benoit.