Disable dependencies and linking for libc_malloc_debug.so

Do not provide anything from libc_malloc_debug.so and do not allow
linking against it.

Resolves: #1985048

glibc.spec

@@ -151,7 +151,7 @@ end \
 Summary: The GNU libc libraries
 Name: glibc
 Version: %{glibcversion}
-Release: 2%{?dist}
+Release: 3%{?dist}
 
 # In general, GPLv2+ is used by programs, LGPLv2+ is used for
 # libraries.
@@ -342,6 +342,7 @@ BuildRequires: perl-interpreter
 # Filter out all GLIBC_PRIVATE symbols since they are internal to
 # the package and should not be examined by any other tool.
 %global __filter_GLIBC_PRIVATE 1
+%global __provides_exclude ^libc_malloc_debug\\.so.*$
 
 # For language packs we have glibc require a virtual dependency
 # "glibc-langpack" wich gives us at least one installed langpack.
@@ -1483,6 +1484,9 @@ mkdir -p %{glibc_sysroot}%{_libdir}
 mv -f %{glibc_sysroot}/%{_lib}/lib{pcprofile,memusage}.so \
 	%{glibc_sysroot}%{_libdir}
 
+# Disallow linking against libc_malloc_debug.
+rm %{glibc_sysroot}%{_libdir}/libc_malloc_debug.so
+
 # Strip all of the installed object files.
 strip -g %{glibc_sysroot}%{_libdir}/*.o
 
@@ -2257,6 +2261,9 @@ fi
 %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
 
 %changelog
+* Tue Aug 24 2021 Siddhesh Poyarekar <siddhesh@redhat.com> - 2.34.9000-3
+- Disable dependencies and linking for libc_malloc_debug.so (#1985048).
+
 * Tue Aug 17 2021 DJ Delorie <dj@redhat.com> - 2.34.9000-2
 - Auto-sync with upstream branch master,
   commit b37b75d269883a2c553bb7019a813094eb4e2dd1.