Your message dated Wed, 17 Sep 2025 22:18:47 +0000
with message-id <[email protected]>
and subject line Bug#1115531: fixed in c-blosc2 2.17.1+ds-2
has caused the Debian Bug report #1115531,
regarding c-blosc2: FTBFS with glibc 2.42: E: Build killed with signal TERM
after 60 minutes of inactivity
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1115531: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1115531
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Source: c-blosc2
Version: 2.17.1+ds-1
Severity: normal
Tags: ftbfs forky sid upstream patch
Justification: fails to build from source
User: [email protected]
Usertags: glibc-2.42
Dear maintainer,
During a rebuild of all packages in unstable with glibc 2.42 from
experimental, your package failed to build. Below you will find how the
build ends. If required, the full build log is available here:
https://people.debian.org/~aurel32/glibc-2.42/
After investigation it appears that the issue is due to pthread_create()
now setting errno to EINVAL when running on kernel < 6.13, even if it
succeed. This is perfectly allowed as explained in errno(3):
https://man7.org/linux/man-pages/man3/errno.3.html
The problem is that c-blosc2 is checking errno to check a possible error
of the strtol() function. This only works if errno is set to 0 before
the call, as explained in the cavears section of strtol(3):
https://man7.org/linux/man-pages/man3/strtol.3.html
You will find attached a simple patch to fix the problem, setting errno
to 0 before the call to strtol. An alternative is to pass endptr to the
strtol call and check for its value. The other case that can return
EINVAL, that is a not supported base, can't happen as the base is fixed.
In short it means replacing
| nthreads = strtol(envvar, NULL, 10);
| if ((errno != EINVAL)) {
by
| nthreads = strtol(envvar, &endptr, 10);
| if ((endptr != envvar)) {
I leave you choose what is the best option and report that to upstream.
About the archive rebuild: The build was made on virtual machines from
AWS, using sbuild, a reduced chroot with only build-essential packages
and glibc 2.42 from experimental.
Regards
Aurelien
--------------------------------------------------------------------------------
[...]
725: Tests run: 2
725: .. ALL TESTS PASSED
725: Tests run: 2
725: .. ALL TESTS PASSED
725: Tests run: 2
725/1369 Test #725: test_nolock
............................................... Passed 0.08 sec
test 726
Start 726: test_nthreads
726: Test command: /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/tests/test_nthreads
726: Working Directory: /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/tests
726: Test timeout computed to be: 10000000
E: Build killed with signal TERM after 60 minutes of inactivity
--------------------------------------------------------------------------------
diff --git a/blosc/blosc2.c b/blosc/blosc2.c
index 8ff941ae..fed68f56 100644
--- a/blosc/blosc2.c
+++ b/blosc/blosc2.c
@@ -2725,6 +2725,7 @@ int blosc2_compress(int clevel, int doshuffle, int32_t
typesize,
envvar = getenv("BLOSC_CLEVEL");
if (envvar != NULL) {
long value;
+ errno = 0; /* To distinguish success/failure after call */
value = strtol(envvar, NULL, 10);
if ((errno != EINVAL) && (value >= 0)) {
clevel = (int)value;
@@ -2768,6 +2769,7 @@ int blosc2_compress(int clevel, int doshuffle, int32_t
typesize,
envvar = getenv("BLOSC_TYPESIZE");
if (envvar != NULL) {
long value;
+ errno = 0; /* To distinguish success/failure after call */
value = strtol(envvar, NULL, 10);
if ((errno != EINVAL) && (value > 0)) {
typesize = (int32_t)value;
@@ -2790,6 +2792,7 @@ int blosc2_compress(int clevel, int doshuffle, int32_t
typesize,
envvar = getenv("BLOSC_BLOCKSIZE");
if (envvar != NULL) {
long blocksize;
+ errno = 0; /* To distinguish success/failure after call */
blocksize = strtol(envvar, NULL, 10);
if ((errno != EINVAL) && (blocksize > 0)) {
blosc1_set_blocksize((size_t) blocksize);
@@ -2803,6 +2806,7 @@ int blosc2_compress(int clevel, int doshuffle, int32_t
typesize,
envvar = getenv("BLOSC_NTHREADS");
if (envvar != NULL) {
long nthreads;
+ errno = 0; /* To distinguish success/failure after call */
nthreads = strtol(envvar, NULL, 10);
if ((errno != EINVAL) && (nthreads > 0)) {
result = blosc2_set_nthreads((int16_t) nthreads);
@@ -2986,6 +2990,7 @@ int blosc2_decompress(const void* src, int32_t srcsize,
void* dest, int32_t dest
/* Check for a BLOSC_NTHREADS environment variable */
envvar = getenv("BLOSC_NTHREADS");
if (envvar != NULL) {
+ errno = 0; /* To distinguish success/failure after call */
nthreads = strtol(envvar, NULL, 10);
if ((errno != EINVAL)) {
if ((nthreads <= 0) || (nthreads > INT16_MAX)) {
@@ -4031,6 +4036,7 @@ blosc2_context* blosc2_create_cctx(blosc2_cparams
cparams) {
envvar = getenv("BLOSC_TYPESIZE");
if (envvar != NULL) {
int32_t value;
+ errno = 0; /* To distinguish success/failure after call */
value = (int32_t) strtol(envvar, NULL, 10);
if ((errno != EINVAL) && (value > 0)) {
context->typesize = value;
@@ -4046,6 +4052,7 @@ blosc2_context* blosc2_create_cctx(blosc2_cparams
cparams) {
envvar = getenv("BLOSC_CLEVEL");
if (envvar != NULL) {
int value;
+ errno = 0; /* To distinguish success/failure after call */
value = (int)strtol(envvar, NULL, 10);
if ((errno != EINVAL) && (value >= 0)) {
context->clevel = value;
@@ -4073,6 +4080,7 @@ blosc2_context* blosc2_create_cctx(blosc2_cparams
cparams) {
envvar = getenv("BLOSC_BLOCKSIZE");
if (envvar != NULL) {
int32_t blocksize;
+ errno = 0; /* To distinguish success/failure after call */
blocksize = (int32_t) strtol(envvar, NULL, 10);
if ((errno != EINVAL) && (blocksize > 0)) {
context->blocksize = blocksize;
@@ -4086,6 +4094,7 @@ blosc2_context* blosc2_create_cctx(blosc2_cparams
cparams) {
/* Check for a BLOSC_NTHREADS environment variable */
envvar = getenv("BLOSC_NTHREADS");
if (envvar != NULL) {
+ errno = 0; /* To distinguish success/failure after call */
int16_t nthreads = (int16_t) strtol(envvar, NULL, 10);
if ((errno != EINVAL) && (nthreads > 0)) {
context->nthreads = nthreads;
@@ -4174,6 +4183,7 @@ blosc2_context* blosc2_create_dctx(blosc2_dparams
dparams) {
context->nthreads = dparams.nthreads;
char* envvar = getenv("BLOSC_NTHREADS");
if (envvar != NULL) {
+ errno = 0; /* To distinguish success/failure after call */
long nthreads = strtol(envvar, NULL, 10);
if ((errno != EINVAL) && (nthreads > 0)) {
context->nthreads = (int16_t) nthreads;
--- End Message ---
--- Begin Message ---
Source: c-blosc2
Source-Version: 2.17.1+ds-2
Done: Antonio Valentino <[email protected]>
We believe that the bug you reported is fixed in the latest version of
c-blosc2, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Antonio Valentino <[email protected]> (supplier of updated c-blosc2
package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Wed, 17 Sep 2025 21:34:48 +0000
Source: c-blosc2
Architecture: source
Version: 2.17.1+ds-2
Distribution: unstable
Urgency: medium
Maintainer: Debian Science Maintainers
<[email protected]>
Changed-By: Antonio Valentino <[email protected]>
Closes: 1115531
Changes:
c-blosc2 (2.17.1+ds-2) unstable; urgency=medium
.
* debian/patches:
- New 0002-glibc242-compat.patch (Closes: 1115531).
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