Sorry, I've just updated to Ubuntu 25.10 so didn't see this before.
I think this is a compiler problem; just reporting here for the benefit
of other Ubuntu (and possibly Debian) users who roll their own Exim.
# gcc -Werror -Wall -Wextra -Wimplicit-function-declaration -Wimplicit-int
-Wincompatible-pointer-types -Wno-parentheses -Wno-dangling-else
-Wno-unused-function -Wno-unused-result -Wno-address -Wno-format
-Wno-format-truncation -Wno-format-extra-args
-Wno-unused-but-set-variable
-Wno-unused-variable -Wno-maybe-uninitialized
-Wno-misleading-indentation
-Wno-sign-compare -Wno-old-style-declaration -Wno-unused-parameter
-Wno-empty-body -Wno-missing-field-initializers
-Wno-implicit-fallthrough
-c -O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -I/usr/local/include/
-I. rda.c
In file included from /usr/include/features.h:523,
from os.h:12,
from exim.h:38,
from rda.c:15:
In function ‘read’,
inlined from ‘rda_read_string’ at rda.c:493:7:
/usr/include/x86_64-linux-gnu/bits/unistd.h:32:10: error: ‘__read_alias’
specified size 18446744073709551615 exceeds maximum object size
9223372036854775807 [-Werror=stringop-overflow=]
32 | return __glibc_fortify (read, __nbytes, sizeof (char),
| ^~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/bits/unistd-decl.h: In function
‘rda_read_string’:
/usr/include/x86_64-linux-gnu/bits/unistd-decl.h:29:16: note: in a call to
function ‘__read_alias’ declared with attribute access (write_only, 2, 3)’
29 | extern ssize_t __REDIRECT_FORTIFY (__read_alias, (int __fd,
void *__buf,
| ^~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
No problem building with clang-22 or the gcc-snapshot compiler
- but `apt show gcc-snapshot` says:
DO NOT USE THIS SNAPSHOT FOR BUILDING DEBIAN PACKAGES!
[ 18446744073709551615 = 2^64 -1 and 9223372036854775807 = 2^63 -1
so I suspect a long / unsigned long issue somewhere in the
compiler libraries.
]
--
Andrew C. Aitchison Kendal, UK
[email protected]
--
## subscription configuration (requires account):
## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/
## unsubscribe (doesn't require an account):
## [email protected]
## Exim details at http://www.exim.org/
## Please use the Wiki with this list - http://wiki.exim.org/
