Hello,
Please find a one-liner patch in the attachment.
This patch fixes a size parameter of `pg_strncasecmp` which compared a "string" literal with a variable by passing a size of 5 while the "string" literal has 6 bytes.
This issue can be observed with the following query (where 'X' is any character other than 'g' and null byte):
select json_to_tsvector('"abc"'::json, '"strinX"')
Before this patch this query returns the `'abc':1` result instead of failing with the following error:
wrong flag in flag array: "strinX"
By the way, the `strncasecmp` usages around the fixed line could use `strcasecmp` which doesn't accept the `size_t n` argument.
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Regards,
Disconnect3d