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matzmatz
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Revert "mruby/throw.h: do not use __builtin_setjmp for GCC; close #5950"
This reverts commit 9cf49d0. This change caused flaky tests on MinGW. I now remember it was introduced for MINGW64 to address #5133. Sorry.
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‎include/mruby/throw.h‎

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@@ -33,6 +33,9 @@ typedef mrb_int mrb_jmpbuf_impl;
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#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
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#define MRB_SETJMP _setjmp
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#define MRB_LONGJMP _longjmp
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#elif defined(__MINGW64__) && defined(__GNUC__) && __GNUC__ >= 4
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#define MRB_SETJMP __builtin_setjmp
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#define MRB_LONGJMP __builtin_longjmp
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#else
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#define MRB_SETJMP setjmp
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#define MRB_LONGJMP longjmp

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