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compile.c: default_len is positive

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Recent GCC warns that default_len can be negative (thus can
overflow PTRDIFF_MAX), which is a false assert.  Suppresses
warnings by adding __builtin_unreachable.

See also: https://travis-ci.org/ruby/ruby/jobs/443568193#L2227


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65167 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
shyouhei 2018-10-19 08:46:41 +00:00
parent 1b30f57c8f
commit 5bb48dc68a
1 changed files with 3 additions and 0 deletions
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3
compile.c
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@ -8083,6 +8083,9 @@ iseq_build_kw(rb_iseq_t *iseq, VALUE params, VALUE keywords)
keyword->table = ids;
return keyword;
}
else if (default_len < 0) {
UNREACHABLE;
}
dvs = ALLOC_N(VALUE, (unsigned int)default_len);