[bug #66506] gettext-0.23 build failure with libxml2-2.13.5 (constness of xml*Error)

[Sam James]

URL:
  <https://savannah.gnu.org/bugs/?66506>

                 Summary: gettext-0.23 build failure with libxml2-2.13.5
(constness of xml*Error)
                   Group: GNU gettext
               Submitter: thesamesam
               Submitted: Sun 01 Dec 2024 03:32:22 PM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any


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Follow-up Comments:


-------------------------------------------------------
Date: Sun 01 Dec 2024 03:32:22 PM UTC By: Sam James <thesamesam>
Thanks for the new release!

I see the following errors w/ libxml2-2.13.5 when building gettext-0.23:
```
libtool: compile:  x86_64-pc-linux-gnu-gcc -DLOCALEDIR=\"/usr/share/locale\"
-DBISON_LOCALEDIR=\"/usr/share/locale\" -DUSEJAVA=0
-DGETTEXTJAR=\"/usr/share/gettext\"\"/gettext.jar\" -DBINDIR=\"/usr/bin\"
-DLIBDIR=\"/usr/lib64\" -DLIBEXECDIR=\"/usr/libexec\"
-DGETTEXTDATADIR=\"/usr/share/gettext\"
-DPROJECTSDIR=\"/usr/share/gettext\"\"/projects\" -DEXEEXT=\"\"
-DHAVE_CONFIG_H -I.
-I/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/src
-I.. -I/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools
-I../libgrep
-I/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/libgrep
-I../gnulib-lib
-I/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/gnulib-lib
-I../../gettext-runtime/intl
-I/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/../gettext-runtime/intl
-I///usr/include/libxml2 -O3 -march=native -mtls-dialect=gnu2 -flto=jobserver
-fno-semantic-interposition -pipe -fcf-protection=none
-fdiagnostics-color=always -fdiagnostics-urls=never -frecord-gcc-switches
-fdiagnostics-details -fdiagnostics-set-output=text:experimental-nesting=yes
-Wa,-O2 -Wa,-mtune=znver2 -Warray-bounds -Wstrict-aliasing
-Wfree-nonheap-object -Wuninitialized -Wmaybe-uninitialized -Wreturn-type
-Werror=lto-type-mismatch -Werror=strict-aliasing -Werror=odr -Warray-bounds
-fdiagnostics-details -Wstringop-overread -Wstringop-overflow
-Wstringop-truncation -Wformat-overflow -Wformat-truncation
-Wbuiltin-declaration-mismatch -ggdb3 -Wformat -Werror=format-security -c
/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/src/its.c
 -fPIC -DPIC -o .libs/libgettextsrc_la-its.o
/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/src/its.c:
In function 'its_rule_list_add_from_file':
/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/src/its.c:1600:36:
error: passing argument 2 of 'xmlSetStructuredErrorFunc' from incompatible
pointer type [-Wincompatible-pointer-types]
 1600 |   xmlSetStructuredErrorFunc (NULL, structured_error);
      |                                    ^~~~~~~~~~~~~~~~
      |                                    |
      |                                    void (*)(void *, xmlError *) {aka
void (*)(void *, struct _xmlError *)}
In file included from
/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/src/its.c:31:
///usr/include/libxml2/libxml/xmlerror.h:905:57: note: expected
'xmlStructuredErrorFunc' {aka 'void (*)(void *, const struct _xmlError *)'}
but argument is of type 'void (*)(void *, xmlError *)' {aka 'void (*)(void *,
struct _xmlError *)'}
  905 |                                  xmlStructuredErrorFunc handler);
      |                                  ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/src/its.c:
In function 'its_rule_list_add_from_string':
/var/tmp/portage/sys-devel/gettext-0.23/work/gettext-0.23/gettext-tools/src/its.c:1631:36:
error: passing argument 2 of 'xmlSetStructuredErrorFunc' from incompatible
pointer type [-Wincompatible-pointer-types]
 1631 |   xmlSetStructuredErrorFunc (NULL, structured_error);
      |                                    ^~~~~~~~~~~~~~~~
      |                                    |
      |                                    void (*)(void *, xmlError *) {aka
void (*)(void *, struct _xmlError *)}
///usr/include/libxml2/libxml/xmlerror.h:905:57: note: expected
'xmlStructuredErrorFunc' {aka 'void (*)(void *, const struct _xmlError *)'}
but argument is of type 'void (*)(void *, xmlError *)' {aka 'void (*)(void *,
struct _xmlError *)'}
  905 |                                  xmlStructuredErrorFunc handler);
      |                                  ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
```

See https://gitlab.gnome.org/GNOME/libxml2/-/issues/622 :(







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