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4 Commits

Author SHA1 Message Date
Richard Smith cf56ebd52a ubsan: When diagnosing something wrong somewhere in memory, emit a note 
pointing at the bad location and a snippet of nearby memory values. This is
strictly best-effort; reading these bytes to display the note could lead to a
seg fault, and that's explicitly OK.

llvm-svn: 170415
 2012-12-18 06:30:32 +00:00
Will Dietz 2c36c71f5b [ubsan] Refactor handlers to have separate entry points for aborting. 
If user specifies aborting after a recoverable failed check is
appropriate, frontend should emit call to the _abort variant.

Test this behavior with newly added -fsanitize-recover flag.

llvm-svn: 169113
 2012-12-02 19:47:29 +00:00
Will Dietz b28179be10 [ubsan] Replace "fatal error" with "runtime error". 
llvm-svn: 169112
 2012-12-02 18:43:33 +00:00
Richard Smith 2f0d7d564c -fcatch-undefined-behavior checking for appropriate vptr value: library side. 
llvm-svn: 166660
 2012-10-25 02:07:02 +00:00