[Bug 205732] audio/sox: strange --version output

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205732

Dan Nelson <dnelson at allantgroup.com> changed:

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 Attachment #164873|                            |maintainer-approval+
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--- Comment #1 from Dan Nelson <dnelson at allantgroup.com> ---
Created attachment 164873
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=164873&action=edit
fetch a patch that removes the pure attribute from sox_version

Interesting bug :)  The underlying cause is that the sox_version function is
marked "pure", which means that it causes no side-effects.  In reality, it does
cause a side-effect, by filling in an internal version string buffer.  clang
optimizes away the function call, which means that the string never gets
filled.  A bug had already been filed against the upstream sox source tree (
https://sourceforge.net/p/sox/patches/104/ ) , so here's a patch that simply
fetches that patch before building.

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