Use yylex_init not yylex_init_extra().
Older versions of flex don't have the latter. Per buildfarm.
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/ff0a7e6167f475672d82d1cd7cd0d5e735154c4d
Modified Files
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src/bin/psql/psqlscan.l | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)