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a75a418d07
The restore() function assumed that the result of sprintf() with %e format would necessarily contain an 'e', which is false: what if the supplied number is an infinity or NaN? If that did happen, we'd get a null-pointer-dereference core dump. The case appears impossible currently, because seg_in() does not accept such values, and there are no seg-creating functions that would create one. But it seems unwise to rely on it never happening in future. Quite aside from that, the code was pretty ugly: it relied on modifying a static format string when it could use a "*" precision argument, and it used strtok() entirely gratuitously, and it stripped off trailing spaces by hand instead of just not asking for them to begin with. Coverity noticed the potential null pointer dereference (though I wonder why it didn't complain years ago, since this code is ancient). Since this is just code cleanup and forestalling a hypothetical future bug, there seems no need for back-patching.
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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.