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Peter Geoghegan a9ce839a31 Sanitize line pointers within contrib/amcheck. ... Adopt a more defensive approach to accessing index tuples in contrib/amcheck: verify that each line pointer looks sane before accessing associated tuple using pointer arithmetic based on line pointer's offset. This avoids undefined behavior and assertion failures in cases where line pointers are corrupt. Issue spotted following a complaint about an assertion failure by Grigory Smolkin, which involved a test harness that deliberately corrupts indexes. This is arguably a bugfix, but no backpatch given the lack of field reports beyond Grigory's. Discussion: https://postgr.es/m/CAH2-WzmkurhCqnyLHxk0VkOZqd49+ZZsp1xAJOg7j2x7dmp_XQ@mail.gmail.com		7 years ago
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expected	Add test coverage for rootdescend verification.	7 years ago
sql	Add test coverage for rootdescend verification.	7 years ago
.gitignore	…
Makefile	Allow amcheck to re-find tuples using new search.	7 years ago
amcheck--1.0--1.1.sql	Add amcheck verification of heap relations belonging to btree indexes.	8 years ago
amcheck--1.0.sql	…
amcheck--1.1--1.2.sql	Allow amcheck to re-find tuples using new search.	7 years ago
amcheck.control	Allow amcheck to re-find tuples using new search.	7 years ago
verify_nbtree.c	Sanitize line pointers within contrib/amcheck.	7 years ago