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Races when 2 threads try to establish first enbedded connections to engine simultaneously [CORE4997] #5285

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firebird-automations opened this issue Nov 9, 2015 · 4 comments
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Races when 2 threads try to establish first enbedded connections to engine simultaneously [CORE4997] #5285

firebird-automations opened this issue Nov 9, 2015 · 4 comments
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@AlexPeshkoff
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affect-version: 3.0 Beta 1 affect-version: 3.0 Beta 2 affect-version: 3.0 RC1 component: api / client library fix-version: 3.0 RC2 priority: major qa: cannot be tested type: bug

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Submitted by: @hvlad

A number of interfaces (like Master, Util, Dtc) are implemented as pointers to static variables. Static variables are created the first time control flow in some thread enters a function where variable is defined, and when 2 threads do it simultaneously behavior is implementation-defined. I.e. it may cause races and really does it - at least with MSVC compiler.

Commits: d969134 FirebirdSQL/fbt-repository@c2e333e
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Modified by: @AlexPeshkoff

assignee: Alexander Peshkov [ alexpeshkoff ]

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Modified by: @AlexPeshkoff

reporter: Alexander Peshkov [ alexpeshkoff ] => Vlad Khorsun [ hvlad ]

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Modified by: @AlexPeshkoff

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

Fix Version: 3.0.0 [ 10048 ]

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Modified by: @pavel-zotov

status: Resolved [ 5 ] => Resolved [ 5 ]

QA Status: No test => Cannot be tested

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@AlexPeshkoff AlexPeshkoff

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affect-version: 3.0 Beta 1 affect-version: 3.0 Beta 2 affect-version: 3.0 RC1 component: api / client library fix-version: 3.0 RC2 priority: major qa: cannot be tested type: bug
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