Tests on left-shift type.

Vincent Lefevre committed 14 years ago

Commit 09b98a41 parent d54e24c3 files · +55 −1Browse files

Unified · Split

3 files

@@ -0,0 +1,52 @@
	1	/* $Id: lshift-type.c 53089 2012-07-06 11:18:26Z vinc17/ypig $
	2
	3	Tests on left-shift type, written by Vincent Lefevre <vincent@vinc17.net>.
	4
	5	ISO C99 TC3 says: [6.5.7#3] "The integer promotions are performed on
	6	each of the operands. The type of the result is that of the promoted
	7	left operand."
	8	*/
	9
	10	#include <stdio.h>
	11
	12	#define PTYPE(M) ((M) < 0 \|\| -(M) < 0 ? -1 : 1) * (int) sizeof((M)+0)
	13	#define CHECK(X,T) check(#X, PTYPE(X), PTYPE((X) << (T) 1))
	14	#define TEST1(X,T) do { CHECK(X,T); CHECK(X,unsigned T); } while (0)
	15	#define TEST2(X) \
	16	do \
	17	{ \
	18	TEST1((X),short); \
	19	TEST1((X),int); \
	20	TEST1((X),long); \
	21	TEST1((X),long long); \
	22	} \
	23	while (0)
	24	#define TEST3(X,T) do { TEST2((T)(X)); TEST2((unsigned T)(X)); } while (0)
	25	#define TEST4(X) \
	26	do \
	27	{ \
	28	TEST3((X),short); \
	29	TEST3((X),int); \
	30	TEST3((X),long); \
	31	TEST3((X),long long); \
	32	} \
	33	while (0)
	34
	35	static int debug, nfailed = 0;
	36
	37	static void check (const char *s, int arg1, int shift)
	38	{
	39	int failed = arg1 != shift;
	40	if (debug \|\| failed)
	41	printf ("%s %d %d\n", s, arg1, shift);
	42	nfailed += failed;
	43	}
	44
	45	int main (int argc, char **argv)
	46	{
	47	debug = argc > 1;
	48	TEST4(1);
	49	TEST4(-1);
	50	printf ("%d test(s) failed\n", nfailed);
	51	return nfailed != 0;
	52	}

@@ -0,0 +1 @@
		1	0 test(s) failed

@@ -61,7 +61,8 @@ TESTS= 00_assignment.test \ · 60 unmodified lines
61	50_logical_second_arg.test \	61	50_logical_second_arg.test \
62	51_static.test \	62	51_static.test \
63	52_unnamed_enum.test \	63	52_unnamed_enum.test \
64	54_goto.test	64	54_goto.test \
		65	55_lshift_type.test
65		66
66	# 30_hanoi.test \ # seg fault in the code, gcc as well	67	# 30_hanoi.test \ # seg fault in the code, gcc as well
67	# 34_array_assignment.test \ # array assignment is not in C standard	68	# 34_array_assignment.test \ # array assignment is not in C standard

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