Stefan Wagner authored Nov 06, 2016 and Jakub Jirutka committed Nov 07, 2016

This patch tries to fix various crashes for applications depending on
libmilter by setting the stack size for pthreads to 8 MB. The default
stack size for musl libc is set to 80 KB whereas glibc has it set
to 8 MB. This causes problems when a large amount of memory is
allocated on the stack.

For example, opendkim allocates blocks of 64 KB multiple times, which
causes libmilter (and therefore opendkim) to crash.
Maybe a stack size of 1 MB or 2 MB would be sufficient, but as opendkim
depends on the default glibc behavior, 8 MB should be safe.

I know this patch is kind of ugly, a better solution may be to file
a request for opendkim to allocate large blocks of memory on the heap.
But as libmilter/opendkim are fairly unusable at the moment, I suggest
to apply this patch as long as these packages are in testing.

Fixes https://bugs.alpinelinux.org/issues/6360