[issue20354] tracemalloc causes segfault in "make profile-opt"

[Stefan Krah]

Stefan Krah added the comment:

For gcc, #pragma pack(n) apparently sets the new aligment for the entire
compilation unit:

http://gcc.gnu.org/onlinedocs/gcc/Structure-Packing-Pragmas.html

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nosy: +skrah

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<http://bugs.python.org/issue20354>
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