[Bug bootstrap/42628] ICE during bootstrap when compiling several libsupc++ files: original tree changed by fold

[matt at use dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42628

--- Comment #12 from Matt Hargett <matt at use dot net> 2010-10-18 22:44:19 UTC 
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If someone resolves this bug as a duplicate of PR45700 (or vice versa), I'll
verify.