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Bug#893570: libc6: After update:libc6 my wvdial crashes:utils/wvtask.cc:303:static int WvTaskMan::yield(int): Assertion `*current_

Package: libc6
Version: 2.24-11+deb9u1
Severity: important

Dear Maintainer,

1.I've updated the following packages:

libc-dev-bin (2.24-11+deb9u1) to 2.24-11+deb9u3
libc6 (2.24-11+deb9u1) to 2.24-11+deb9u3
libc6-dev (2.24-11+deb9u1) to 2.24-11+deb9u3

2.Then I launched WVDIAL
root@debian:/home/mydebi# wvdial
--> WvDial: Internet dialer version 1.61
--> Initializing modem.
--> Sending: ATZ
--> Sending: AT+CGDCONT=1,"IP","xxxxxxxxx"
--> Modem initialized.
--> Sending: ATD*99#
--> Waiting for carrier.
CONNECT 100000000
--> Carrier detected.  Starting PPP immediately.
--> Starting pppd at Mon Mar 11 18:03:04 2018
--> Pid of pppd: 1616
wvdial: utils/wvtask.cc:303: static int WvTaskMan::yield(int): Assertion
`*current_task->stack_magic == WVTASK_MAGIC' failed.
The connection has been established, the internet works but this nasty message
wvdial: utils/wvtask.cc:303: static int WvTaskMan::yield(int): Assertion
`*current_task->stack_magic == WVTASK_MAGIC' failed.

3.The dependency analysis indicated that the above two files: libc6 and
libc6-dev appear as dependencies in libwvstreams4.6-base (my version is:

4.I've tried two different USB modems. To work normally, I returned to version:
libc-dev-bin (2.24-11+deb9u1)
libc6 (2.24-11+deb9u1)
libc6-dev (2.24-11+deb9u1)

5. !!! CONCLUSION !!!. The problem (error) is probably in the updated files:
libc6 or libc6-dev or libc-dev-bin, hmmm ??... or in the absence of
actualization the libwvstreams4.6-base file (my version is: 4.6.1-11)

Debian GNU/Linux 9.4 (stretch)
Kernel: Linux 4.9.0-6-amd64

Versions of packages libwvstreams4.6-base (ver. 4.6.1-11) depends:
libwvstreams4.6-extras ver. 4.6.1-11
libc6 ver. 2.24-11+deb9u3 (PROBLEM !) 2.24-11+deb9u1 (NO PROBLEM)
libgcc1 ver. 1:6.3.0-18+deb9u1
libstdc++6 ver.6.3.0-18+deb9u1
zlib1g ver.1:1.2.8.dfsg-5

-- System Information:
Debian Release: 9.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-6-amd64 (SMP w/2 CPU cores)
Locale: LANG=pl_PL.UTF-8, LC_CTYPE=pl_PL.UTF-8 (charmap=UTF-8), LANGUAGE=pl_PL.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libc6 depends on:
ii  libgcc1  1:6.3.0-18+deb9u1

libc6 recommends no packages.

Versions of packages libc6 suggests:
ii  debconf [debconf-2.0]  1.5.61
pn  glibc-doc              <none>
ii  libc-l10n              2.24-11+deb9u3
ii  locales                2.24-11+deb9u3

-- debconf information excluded

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