postgresql/src/interfaces
Tom Lane de77775a7b Fix some cases of indirectly casting away const.
Newest versions of gcc+glibc are able to detect cases where code
implicitly casts away const by assigning the result of strchr() or
a similar function applied to a "const char *" value to a target
variable that's just "char *".  This of course creates a hazard of
not getting a compiler warning about scribbling on a string one was
not supposed to, so fixing up such cases is good.

This patch fixes a dozen or so places where we were doing that.
Most are trivial additions of "const" to the target variable,
since no actually-hazardous change was occurring.

Thanks to Bertrand Drouvot for finding a couple more spots than
I had.

This commit back-patches relevant portions of 8f1791c61 and
9f7565c6c into supported branches.  However, there are two
places in ecpg (in v18 only) where a proper fix is more
complicated than seems appropriate for a back-patch.  I opted
to silence those two warnings by adding casts.

Author: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Discussion: https://postgr.es/m/1324889.1764886170@sss.pgh.pa.us
Discussion: https://postgr.es/m/3988414.1771950285@sss.pgh.pa.us
Backpatch-through: 14-18
2026-02-25 11:19:50 -05:00
..
ecpg Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
libpq Translation updates 2026-02-23 13:53:35 +01:00
libpq-oauth libpq-oauth: use correct c_args in meson.build 2025-12-17 11:54:56 -08:00
Makefile oauth: Move the builtin flow into a separate module 2025-05-01 09:14:30 -07:00
meson.build Update copyright for 2025 2025-01-01 11:21:55 -05:00