tests: Added numerous tests.

The tests are taken almost verbatim from the open source project PicoC. It can
be found at https://code.google.com/p/picoc/.

The tests range from very simple/trivial ones to more complicated. My view is
that the more tests the better. Without tests like this I was very reluctant to
make any changes to tcc for the fear of breaking things.

The tests pass on Win32, OSX, Linux x86 and x86_64. One or two tests fail on
each platform due to differences in the runtime library.

tests2/Makefile

@@ -0,0 +1,90 @@
+TOP = ..
+include $(TOP)/Makefile
+
+ifeq ($(TARGETOS),Darwin)
+    CFLAGS+=-Wl,-flat_namespace,-undefined,warning
+    TCCFLAGS=-D_ANSI_SOURCE
+    export MACOSX_DEPLOYMENT_TARGET:=10.2
+endif
+
+ifdef CONFIG_WIN32
+    TCCFLAGS=-I $(TOP)/win32/include -L$(TOP)
+endif
+
+TESTS=	00_assignment.test \
+		01_comment.test \
+		02_printf.test \
+		03_struct.test \
+		04_for.test \
+		05_array.test \
+		06_case.test \
+		07_function.test \
+		08_while.test \
+		09_do_while.test \
+		10_pointer.test \
+		11_precedence.test \
+		12_hashdefine.test \
+		13_integer_literals.test \
+		14_if.test \
+		15_recursion.test \
+		16_nesting.test \
+		17_enum.test \
+		18_include.test \
+		19_pointer_arithmetic.test \
+		20_pointer_comparison.test \
+		21_char_array.test \
+		22_floating_point.test \
+		23_type_coercion.test \
+		24_math_library.test \
+		25_quicksort.test \
+		26_character_constants.test \
+        27_sizeof.test \
+		28_strings.test \
+		29_array_address.test \
+		31_args.test \
+		32_led.test \
+		33_ternary_op.test \
+		35_sizeof.test \
+		36_array_initialisers.test \
+		37_sprintf.test \
+		38_multiple_array_index.test \
+		39_typedef.test \
+		40_stdio.test \
+		41_hashif.test \
+        42_function_pointer.test \
+		43_void_param.test \
+		44_scoped_declarations.test \
+		45_empty_for.test \
+		47_switch_return.test \
+		48_nested_break.test \
+		49_bracket_evaluation.test \
+		50_logical_second_arg.test \
+		51_static.test \
+		52_unnamed_enum.test \
+		54_goto.test
+
+		# 30_hanoi.test \ # seg fault in the code, gcc as well
+		# 34_array_assignment.test \ # array assignment is not in C standard
+        # 46_grep.test \ # does not compile even with gcc
+
+%.test: %.expect %.c
+	@echo Test: $*...
+	-@if [ "x`echo $* | grep args`" != "x" ]; \
+	then \
+		../tcc -B.. $(TCCFLAGS) -run $*.c - arg1 arg2 arg3 arg4 2>&1 >$*.output; \
+	else \
+		../tcc -B.. $(TCCFLAGS) -run $*.c 2>&1 >$*.output; \
+	fi
+	@if diff -bu $*.expect $*.output ; \
+	then \
+        rm -f $*.output \
+        : \
+	else \
+		echo "ERROR: test $*"; \
+	fi
+
+all: test
+
+test: $(TESTS)
+
+#  vim: set expandtab ts=4 sw=4 sts=4 tw=80 :