what does -mthreads do?

[Adam Megacz]

Adam Megacz <gcc@lists.megacz.com> writes:
> On mingw32, in the compiler itself, does '-mthreads' do anything besides
> -D_MT? Any special magic?

And besides '-lmingwthr'. Basically I know this changes which sections
of certain headers compile; I want to know if the actual code emitted
for a try..catch block changes.

  - a

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