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Native extension: include ruby/debug.h for rb_postponed_job_register_…
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…one prototype

Avoids relying on the implicit declaration. Fixes compiling with latest Clang from Xcode 12. Closes #81.
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@georgeclaghorn @tmm1
georgeclaghorn authored and tmm1 committed Jul 7, 2020
1 parent 4b6b80c commit 7aee201
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#include <msgpack.h>
#include <ruby.h>
#include <ruby/debug.h>

#ifndef RUBY_VM
#include <env.h>
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1 comment on commit 7aee201

@martindorey
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ruby/debug.h was introduced with ruby/ruby@cea7600#diff-0a664fffd3b89256eb738e146535994539ffc48424e16ace9c75506351ebe00c first tagged with v2_0_0_preview2, so this breaks compatibility with Ruby 1.9.3 and Ruby 1.8.7, the last versions on those branches. Surely that's fair enough but it would have helped me if we had the required_ruby_version declared in the gemspec.

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