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6217053f4e
repeat() checked for integer overflow during its calculation of the required output space, but it just passed the resulting integer to palloc(). This meant that result sizes between 1GB and 2GB led to ERRCODE_INTERNAL_ERROR, "invalid memory alloc request size" rather than ERRCODE_PROGRAM_LIMIT_EXCEEDED, "requested length too large". That seems like a bit of a wart, so add an explicit AllocSizeIsValid check to make these error cases uniform. Do likewise in the sibling functions lpad() etc. While we're here, also modernize their overflow checks to use pg_mul_s32_overflow() etc instead of expensive divisions. Per complaint from Japin Li. This is basically cosmetic, so I don't feel a need to back-patch. Discussion: https://postgr.es/m/ME3P282MB16676ED32167189CB0462173B6D69@ME3P282MB1667.AUSP282.PROD.OUTLOOK.COM |
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PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.