patching file Rules
Hunk #1 FAILED at 155.
Hunk #2 FAILED at 166.
Hunk #3 FAILED at 192.
Hunk #4 FAILED at 202.
Hunk #5 FAILED at 226.
5 out of 5 hunks FAILED -- saving rejects to file Rules.rej
patching file malloc/Makefile
Hunk #1 succeeded at 78 with fuzz 2 (offset 2 lines).
Hunk #2 FAILED at 135.
Hunk #3 FAILED at 270.
Hunk #4 FAILED at 297.
3 out of 4 hunks FAILED -- saving rejects to file malloc/Makefile.rej

Reject file Rules.rej:
--- Rules
+++ Rules
@@ -155,6 +155,7 @@ xtests: tests $(xtests-special)
 else
 tests: $(tests:%=$(objpfx)%.out) $(tests-internal:%=$(objpfx)%.out) \
        $(tests-container:%=$(objpfx)%.out) \
+       $(tests-mcheck:%=$(objpfx)%-mcheck.out) \
        $(tests-malloc-check:%=$(objpfx)%-malloc-check.out) \
        $(tests-special) $(tests-printers-out)
 xtests: tests $(xtests:%=$(objpfx)%.out) $(xtests-special)
@@ -166,7 +167,8 @@ ifeq ($(run-built-tests),no)
 tests-expected =
 else
 tests-expected = $(tests) $(tests-internal) $(tests-printers) \
-	$(tests-container) $(tests-malloc-check:%=%-malloc-check)
+	$(tests-container) $(tests-malloc-check:%=%-malloc-check) \
+	$(tests-mcheck:%=%-mcheck)
 endif
 tests:
 	$(..)scripts/merge-test-results.sh -s $(objpfx) $(subdir) \
@@ -192,6 +194,7 @@ else
 binaries-pie-tests =
 binaries-pie-notests =
 endif
+binaries-mcheck-tests = $(tests-mcheck:%=%-mcheck)
 binaries-malloc-check-tests = $(tests-malloc-check:%=%-malloc-check)
 else
 binaries-all-notests =
@@ -202,6 +205,7 @@ binaries-static-tests =
 binaries-static =
 binaries-pie-tests =
 binaries-pie-notests =
+binaries-mcheck-tests =
 binaries-malloc-check-tests =
 endif
 
@@ -226,6 +230,15 @@ $(addprefix $(objpfx),$(binaries-shared-tests)): %: %.o \
 	$(+link-tests)
 endif
 
+ifneq "$(strip $(binaries-mcheck-tests))" ""
+$(addprefix $(objpfx),$(binaries-mcheck-tests)): %-mcheck: %.o \
+  $(link-extra-libs-tests) \
+  $(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
+  $(common-objpfx)malloc/libmcheck.a \
+  $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
+	$(+link-tests)
+endif
+
 ifneq "$(strip $(binaries-malloc-check-tests))" ""
 $(addprefix $(objpfx),$(binaries-malloc-check-tests)): %-malloc-check: %.o \
   $(link-extra-libs-tests) \

Reject file malloc/Makefile.rej:
--- malloc/Makefile
+++ malloc/Makefile
@@ -135,6 +155,11 @@ $(objpfx)tst-malloc-thread-exit: $(shared-thread-library)
 $(objpfx)tst-malloc-thread-fail: $(shared-thread-library)
 $(objpfx)tst-malloc-fork-deadlock: $(shared-thread-library)
 $(objpfx)tst-malloc-stats-cancellation: $(shared-thread-library)
+$(objpfx)tst-malloc-backtrace-mcheck: $(shared-thread-library)
+$(objpfx)tst-malloc-thread-exit-mcheck: $(shared-thread-library)
+$(objpfx)tst-malloc-thread-fail-mcheck: $(shared-thread-library)
+$(objpfx)tst-malloc-fork-deadlock-mcheck: $(shared-thread-library)
+$(objpfx)tst-malloc-stats-cancellation-mcheck: $(shared-thread-library)
 $(objpfx)tst-malloc-backtrace-malloc-check: $(shared-thread-library)
 $(objpfx)tst-malloc-thread-exit-malloc-check: $(shared-thread-library)
 $(objpfx)tst-malloc-thread-fail-malloc-check: $(shared-thread-library)
@@ -270,17 +295,24 @@ $(foreach o,$(all-object-suffixes),$(objpfx)malloc$(o)): arena.c hooks.c
 $(tests:%=$(objpfx)%.o): CPPFLAGS += -DTEST_NO_MALLOPT
 
 $(objpfx)tst-interpose-nothread: $(objpfx)tst-interpose-aux-nothread.o
+$(objpfx)tst-interpose-nothread-mcheck: $(objpfx)tst-interpose-aux-nothread.o
 $(objpfx)tst-interpose-nothread-malloc-check: \
 	$(objpfx)tst-interpose-aux-nothread.o
 $(objpfx)tst-interpose-thread: \
   $(objpfx)tst-interpose-aux-thread.o $(shared-thread-library)
+$(objpfx)tst-interpose-thread-mcheck: \
+  $(objpfx)tst-interpose-aux-thread.o $(shared-thread-library)
 $(objpfx)tst-interpose-thread-malloc-check: \
   $(objpfx)tst-interpose-aux-thread.o $(shared-thread-library)
 $(objpfx)tst-interpose-static-nothread: $(objpfx)tst-interpose-aux-nothread.o
+$(objpfx)tst-interpose-static-nothread-mcheck: \
+	$(objpfx)tst-interpose-aux-nothread.o
 $(objpfx)tst-interpose-static-nothread-malloc-check: \
 	$(objpfx)tst-interpose-aux-nothread.o
 $(objpfx)tst-interpose-static-thread: \
   $(objpfx)tst-interpose-aux-thread.o $(static-thread-library)
+$(objpfx)tst-interpose-static-thread-mcheck: \
+  $(objpfx)tst-interpose-aux-thread.o $(static-thread-library)
 $(objpfx)tst-interpose-static-thread-malloc-check: \
   $(objpfx)tst-interpose-aux-thread.o $(static-thread-library)
 
@@ -297,6 +329,9 @@ $(objpfx)tst-dynarray-fail-mem.out: $(objpfx)tst-dynarray-fail.out
 $(objpfx)tst-malloc-tcache-leak: $(shared-thread-library)
 $(objpfx)tst-malloc_info: $(shared-thread-library)
 $(objpfx)tst-mallocfork2: $(shared-thread-library)
+$(objpfx)tst-malloc-tcache-leak-mcheck: $(shared-thread-library)
+$(objpfx)tst-malloc_info-mcheck: $(shared-thread-library)
+$(objpfx)tst-mallocfork2-mcheck: $(shared-thread-library)
 $(objpfx)tst-malloc-tcache-leak-malloc-check: $(shared-thread-library)
 $(objpfx)tst-malloc_info-malloc-check: $(shared-thread-library)
 $(objpfx)tst-mallocfork2-malloc-check: $(shared-thread-library)