tree 3895e04cf80531097bbbcb387817a0c619028fda
parent cbdc283cf46122674eb53c27d9ce1ecb764f5428
author Patrick Williams <patrick@stwcx.xyz> 1628173114 -0500
committer Matt Spinler <spinler@us.ibm.com> 1629983169 +0000

lg2: compile time checking for reserved header names

Add compile time checking for reserved header names like 'MESSAGE' as
these would override the meaning at a journald level.

This bug was identified in the review of a phosphor-virtual-sensor
commit.

Example compile failure:

    ../virtualSensor.cpp:198:33:   in ‘constexpr’ expansion of
        ‘lg2::details::header_str("MESSAGE")’
    ../subprojects/phosphor-logging/lib/include/phosphor-logging/lg2/header.hpp:45:25:
        error: call to non-‘constexpr’ function ‘static void
        lg2::details::header_str::report_error(const char*)’
       45 |             report_error("Header name is reserved.");

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I3a5c21fe25d307bf9b7fd296a71246a76d66872a