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3143404 - Signal 11 in Lop::lopProcessTree() when SELECT has a very large number of UNIONs - SAP ASE 16.0

Symptom

  • Client connection unexpectedly terminated.
  • ASE errorlog contains an "infected with signal 11" error in the module Lop::lopProcessTree() with a stack trace:

Current process (0x310019) infected with signal 11 (SIGSEGV)
Address 0x0x0000000000e0e9fa (Lop::lopProcessTree()+0x2a), siginfo (code, address) = (1, 0x(nil))

  • Stack trace includes these functions:

Lop::lopProcessTree
lopGenerate
s_compile_stmt
s_compile

  Note: The full stack trace is available under Attachments.


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Environment

SAP Adaptive Server Enterprise (ASE)  16.0

Product

SAP Adaptive Server Enterprise 16.0

Keywords

Sybase, infected, signal, SEGV, SIGSEGV, segment violation, storage access violation, kisignal, CR#123456, CR123456, 123456 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-SYB-ASE-CE , ASE Cluster Edition (Standalone) , Bug Filed

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