Issue #5171 has been reported by Eric Wong.

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Bug #5171: [PATCH] date_core: RB_GC_GUARD temporary strings
http://redmine.ruby-lang.org/issues/5171

Author: Eric Wong
Status: Open
Priority: Normal
Assignee: tadayoshi funaba
Category: ext
Target version: 1.9.x
ruby -v: ruby 1.9.4dev (2011-08-07 trunk 32885) [x86_64-linux]


ext/date/date_core.c (d_lite_inspect): RB_GC_GUARD temporary strings

test/date/test_date.rb: add test case with GC.stress=true

RSTRING_PTR() should not be used directly on function calls:
1) it may drop the VALUE reference from the stack/register set
and and allow GC to collect it
2) macros can evaluate the function call multiple times


If DNDEBUG is not defined, Date#inspect_raw also has the same issue.
However, I think removing the Date#inspect_raw code entirely is better.

If you prefer to use "git pull":
  git pull git://bogomips.org/ruby date_core-gc-guard



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