You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

Tom Lane efd0c16bec Avoid using list_length() to test for empty list. ... The standard way to check for list emptiness is to compare the List pointer to NIL; our list code goes out of its way to ensure that that is the only representation of an empty list. (An acceptable alternative is a plain boolean test for non-null pointer, but explicit mention of NIL is usually preferable.) Various places didn't get that memo and expressed the condition with list_length(), which might not be so bad except that there were such a variety of ways to check it exactly: equal to zero, less than or equal to zero, less than one, yadda yadda. In the name of code readability, let's standardize all those spellings as "list == NIL" or "list != NIL". (There's probably some microscopic efficiency gain too, though few of these look to be at all performance-critical.) A very small number of cases were left as-is because they seemed more consistent with other adjacent list_length tests that way. Peter Smith, with bikeshedding from a number of us Discussion: https://postgr.es/m/CAHut+PtQYe+ENX5KrONMfugf0q6NHg4hR5dAhqEXEc2eefFeig@mail.gmail.com		3 years ago
..
backend	Avoid using list_length() to test for empty list.	3 years ago
bin	Improve tab completion of ALTER TYPE in psql	3 years ago
common	Remove HAVE_UNIX_SOCKETS.	3 years ago
fe_utils	Remove configure probe for sys/select.h.	3 years ago
include	Allow event trigger table_rewrite for ALTER MATERIALIZED VIEW	3 years ago
interfaces	Add missing bad-PGconn guards in libpq entry points.	3 years ago
makefiles	solaris: Remove unnecessary gcc / gnu ld vs sun studio differences	3 years ago
pl	Add PGDLLEXPORTS to some plpgsql function declarations	3 years ago
port	Remove replacement code for getaddrinfo.	3 years ago
template	aix: Remove checks for very old OS versions	3 years ago
test	Avoid using list_length() to test for empty list.	3 years ago
timezone	Remove fallbacks for strtoll, strtoull.	3 years ago
tools	Fix headerscheck and cpluspluscheck's exit codes.	3 years ago
tutorial	Update copyright for 2022	4 years ago
.gitignore	…
DEVELOPERS	…
Makefile	Remove the option to build thread_test.c outside configure.	5 years ago
Makefile.global.in	windows: Remove HAVE_MINIDUMP_TYPE test	3 years ago
Makefile.shlib	solaris: Remove unnecessary gcc / gnu ld vs sun studio differences	3 years ago
nls-global.mk	Fix for make unportability	3 years ago