Per 

https://code.google.com/p/address-sanitizer/wiki/Flags

one benefits from compiling with -fno-common
when -fsanitize=address is active

The attached patch converts the single
common variable to a global/extern
variable.

Seems a good idea to me.  Have run this
with no issues, but more ASAN
coverage is better than less.

Attachment: permit_gcc_fnocommon_4_asan.patch
Description: Binary data

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