CVE-2006-1902

fold_binary in fold-const.c in GNU Compiler Collection (gcc) 4.1 improperly
handles pointer overflow when folding a certain expr comparison to a
corresponding offset comparison in cases other than EQ_EXPR and NE_EXPR,
which might introduce buffer overflow vulnerabilities into applications
that could be exploited by context-dependent attackers.NOTE: the vendor
states that the essence of the issue is “not correctly interpreting an
offset to a pointer as a signed value.”