tests: add memory leak test

Also ...

tcctest.c:
- exclude stuff that gcc doesn't compile on windows.

libtcc.c/tccpp.c:
- use unsigned for memory sizes to avoid printf format warnings
- use "file:line: message" to make IDE error parsers happy.

tccgen.c: fix typo

tests/Makefile

@@ -5,7 +5,7 @@
 TOP = ..
 include $(TOP)/Makefile
 VPATH = $(TOPSRC)/tests $(TOPSRC) $(TOP)
-CFLAGS = -I$(TOPSRC) -I$(TOP)
+CFLAGS := $(filter-out -W% -g% -O%,$(CFLAGS)) -I$(TOPSRC)
 
 # what tests to run
 TESTS = \
@@ -13,6 +13,7 @@ TESTS = \
  hello-run \
  libtest \
  test3 \
+ memtest \
  dlltest \
  abitest \
  vla_test-run \
@@ -145,6 +146,12 @@ ifndef CONFIG_WIN32
 endif
 	@rm tcc2$(EXESUF) libtcc2$(DLLSUF)
 
+memtest:
+	@echo ------------ $@ ------------
+	$(CC) $(CFLAGS) $(NATIVE_DEFINES) -DONE_SOURCE -DMEM_DEBUG=2 ../tcc.c $(LIBS) -o memtest-tcc$(EXESUF)
+	./memtest-tcc$(EXESUF) $(TCCFLAGS) $(NATIVE_DEFINES) -DONE_SOURCE ../tcc.c $(LIBS)
+	./memtest-tcc$(EXESUF) $(TCCFLAGS) $(NATIVE_DEFINES) -DONE_SOURCE -run ../tcc.c $(TCCFLAGS) tcctest.c
+
 
 # memory and bound check auto test
 BOUNDS_OK  = 1 4 8 10 14