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  1. Apache Arrow
  2. ARROW-9500

[C++] Fix segfault with std::to_string in -O3 builds on gcc 7.5.0

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.0.0
    • Component/s: C++

      Description

      There seems to be a gcc bug related to std::to_string that only appears in -O3 builds. It can be seen in something innocuous like

          return Status::Invalid("Float value ", std::to_string(val), " was truncated converting to",
                                 *output.type());
      

      where val is NaN. I haven't found a canonical reference but using something other than to_string for the formatting (here just letting std::ostringstream take care of it) makes the problem go away

      I wasn't able to reproduce the issue with gcc-8

      EDIT: it's a known bug in gcc https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86274

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              • Assignee:
                wesm Wes McKinney
                Reporter:
                wesm Wes McKinney
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