This package currently fails to build (at least on the amd64
architecture) with link time optimizations enabled.  For a background
for LTO please see

https://wiki.debian.org/ToolChain/LTO

The goal is to enable this optimization by default in an upcoming
Debian release in dpkg-buildflags for 64bit architectures.  The goal
is to get this package to build with link time optimizations, or to
explicitly disable link time optimizations for this package build.

To reproduce the build failure, enable the lto optimization in
testing/unstable by adding "optimize=+lto" to DEB_BUILD_MAINT_OPTIONS
in the debian/rules file, or if this macro is unset, just set it:

export DEB_BUILD_MAINT_OPTIONS = optimize=+lto

Please try to fix the build with lto enabled, fixing the packaging or
forwarding the issue upstream. If the issue cannot be fixed,
explicitly disallow building the package with lto by adding to your
rules file:

export DEB_BUILD_MAINT_OPTIONS = optimize=-lto

or adding that string to your existing setting of DEB_BUILD_MAINT_OPTIONS.

The full build log can be found at:
http://qa-logs.debian.net/2022/06/09/dpkglto/google-perftools_2.10-1_unstable_dpkglto.log
The last lines of the build log are at the end of this report.

[...]
PASS: malloc_extension_debug_test
PASS: memalign_debug_unittest
PASS: realloc_debug_unittest
rm -f debugallocation_test.sh
cp -p ./src/tests/debugallocation_test.sh debugallocation_test.sh
PASS: debugallocation_test.sh
rm -f tcmalloc_unittest.sh
cp -p ./src/tests/tcmalloc_unittest.sh tcmalloc_unittest.sh
PASS: tcmalloc_unittest.sh
PASS: tcm_asserts_unittest
PASS: tcmalloc_both_unittest
PASS: tcmalloc_large_unittest
PASS: tcmalloc_large_heap_fragmentation_unittest
PASS: raw_printer_test
PASS: sampler_test
rm -f sampling_test.sh
cp -p ./src/tests/sampling_test.sh sampling_test.sh
FAIL: sampling_test.sh
rm -f heap-profiler_unittest.sh
cp -p ./src/tests/heap-profiler_unittest.sh heap-profiler_unittest.sh
PASS: heap-profiler_unittest.sh
PASS: simple_compat_test
rm -f heap-checker_unittest.sh
cp -p ./src/tests/heap-checker_unittest.sh heap-checker_unittest.sh
PASS: heap-checker_unittest.sh
rm -f heap-checker-death_unittest.sh
cp -p ./src/tests/heap-checker-death_unittest.sh heap-checker-death_unittest.sh
PASS: heap-checker-death_unittest.sh
PASS: tcmalloc_debug_unittest
PASS: sampler_debug_test
rm -f sampling_debug_test.sh
cp -p ./src/tests/sampling_test.sh sampling_debug_test.sh
FAIL: sampling_debug_test.sh
rm -f heap-profiler_debug_unittest.sh
cp -p ./src/tests/heap-profiler_unittest.sh heap-profiler_debug_unittest.sh
PASS: heap-profiler_debug_unittest.sh
rm -f heap-checker_debug_unittest.sh
cp -p ./src/tests/heap-checker_unittest.sh heap-checker_debug_unittest.sh
PASS: heap-checker_debug_unittest.sh
PASS: getpc_test
PASS: profiledata_unittest
PASS: profile_handler_unittest
rm -f profiler_unittest.sh
cp -p ./src/tests/profiler_unittest.sh profiler_unittest.sh
PASS: profiler_unittest.sh
PASS: tcmalloc_and_profiler_unittest
============================================================================
Testsuite summary for gperftools 2.10
============================================================================
# TOTAL: 49
# PASS:  46
# SKIP:  0
# XFAIL: 0
# FAIL:  3
# XPASS: 0
# ERROR: 0
============================================================================
See ./test-suite.log
Please report to gperftools@googlegroups.com
============================================================================
make[4]: *** [Makefile:6958: test-suite.log] Error 1
make[4]: Leaving directory '/<<PKGBUILDDIR>>'
make[3]: *** [Makefile:7066: check-TESTS] Error 2
make[3]: Leaving directory '/<<PKGBUILDDIR>>'
make[2]: *** [Makefile:7623: check-am] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>'
make[1]: *** [debian/rules:34: override_dh_auto_test] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:39: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2