ci: Switch to ubuntu:26.04 images#5175
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Where possible, change to the latest Ubuntu release. The 32-bit images still aren't bumped because of the time64 mismatch.
Glibc 2.42 updated this definition to an unsigned integer so it no longer overflows. Source: https://sourceware.org/git/?p=glibc.git;a=commit;h=3263675250cbcbbcc76ede4f7c660418bd345a11
Glibc 2.43 adds the additional fields from Linux 6.17 to `struct tcp_info`. Source: https://sourceware.org/git/?p=glibc.git;a=commit;h=7e46c2aae47d3284d4eb0845ddcc3951e987d681
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This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed. Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers. |
In Ubuntu 26.04, the musl build hits:
In file included from /checkout/target/aarch64-unknown-linux-musl/debug/build/libc-test-1eed7f417ef9e9ac/out/ctest_output.c:51:
/musl-aarch64/include/string.h:97:7: error: conflicting types for 'basename'; have 'char *(void)'
97 | char *basename();
| ^~~~~~~~
In file included from /checkout/target/aarch64-unknown-linux-musl/debug/build/libc-test-1eed7f417ef9e9ac/out/ctest_output.c:19:
/musl-aarch64/include/libgen.h:9:7: note: previous declaration of 'basename' with type 'char *(char *)'
9 | char *basename(char *);
| ^~~~~~~~
cc1: note: unrecognized command-line option '-Wno-unknown-warning-option' may have been intended to silence earlier diagnostics
I believe this may be due to a new error in recent versions of GCC,
though I have not actually gone through the effort to verify this. In
any case, musl received a patch in 1.2.5 that resolves the issue; apply
it to our 1.1.x build to keep it working.
Link: kraj/musl@725e17e
Ubuntu 26.04 transitioned PowerPC64LE from the IBM long double format to
IEEE binary128 [1], which mean a handful of variadic functions needed to
switch to a binary128-compatible version. These were available starting
with glibc 2.32 (2020-08) per the abilist [2], which is quite a bit
newer than what we say we support at [3] (2.17, 2012-12).
This explains test failures, so skip checking the functions per now. We
should migrate to the `__<name>ieee128` functions at some point, which
need not be related to our documented minimum, but there is no reason to
do it now since Rust doesn't even stably support either IBM `long
double` or binary128.
Demo on Ubuntu 24.04:
$ cat demo.c
#include <stdio.h>
#include <syslog.h>
void demo() {
char buf1[20] = { 0 };
char buf2[20] = { 0 };
printf("Hello, world! %d\n", 1);
fprintf(stderr, "Hello, world! %d\n", 2);
sprintf(buf1, "Hello, world! %d\n", 3);
snprintf(buf2, 20, "Hello, world! %d\n", 4);
syslog(0, "Hello, world! %d\n", 5);
}
$ powerpc64le-linux-gnu-gcc demo.c -c
$ powerpc64le-linux-gnu-nm demo.o
U .TOC.
U __stack_chk_fail
0000000000000000 T demo
U fprintf
U printf
U snprintf
U sprintf
U stderr
U syslog
And the same demo on Ubuntu 26.04:
$ cat demo.c
#include <stdio.h>
#include <syslog.h>
void demo() {
char buf1[20] = { 0 };
char buf2[20] = { 0 };
printf("Hello, world! %d\n", 1);
fprintf(stderr, "Hello, world! %d\n", 2);
sprintf(buf1, "Hello, world! %d\n", 3);
snprintf(buf2, 20, "Hello, world! %d\n", 4);
syslog(0, "Hello, world! %d\n", 5);
}
$ powerpc64le-linux-gnu-gcc demo.c -c
$ powerpc64le-linux-gnu-nm demo.o
U .TOC.
U __fprintfieee128
U __printfieee128
U __snprintfieee128
U __sprintfieee128
U __stack_chk_fail
U __syslogieee128
0000000000000000 T demo
U stderr
[1]: https://bugs.launchpad.net/ubuntu/+bug/2132257
[2]: https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist;h=65d78e50760b5d6b1a9cb39016a7bf8064224794;hb=HEAD#l2519
[3]: https://doc.rust-lang.org/1.96.0/rustc/platform-support.html
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Where possible, change to the latest Ubuntu release. The 32-bit images still aren't bumped because of the time64 mismatch.
There are a handful of supporting changes needed, see individual commit messages for more details. The first two commits are #5188.