Add strncat and strrchr to bounds checking

herman ten brugge committed 3 years ago

Commit 28fa4d31 parent f48efee6 files · +89 −7Browse files

Showing the changes to tests (4 of 6 files). Show all

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@@ -134,9 +134,29 @@ · 133 unmodified lines
134	134	[returns 255]
135	135
136	136	[test_bcheck_126]
137		−112_backtrace.c:159: at main: BCHECK: invalid pointer ........, size 0x? in strchr
	137	+112_backtrace.c:159: at main: BCHECK: invalid pointer ........, size 0x? in strncat dest
138	138	[returns 255]
139	139
140	140	[test_bcheck_127]
141		−112_backtrace.c:161: at main: BCHECK: invalid pointer ........, size 0x? in strdup
	141	+112_backtrace.c:161: at main: BCHECK: invalid pointer ........, size 0x? in strncat dest
	142	+[returns 255]
	143	+
	144	+[test_bcheck_128]
	145	+112_backtrace.c:163: at main: BCHECK: overlapping regions ........(0x?), ........(0x?) in strncat
	146	+[returns 255]
	147	+
	148	+[test_bcheck_129]
	149	+112_backtrace.c:165: at main: BCHECK: overlapping regions ........(0x?), ........(0x?) in strncat
	150	+[returns 255]
	151	+
	152	+[test_bcheck_130]
	153	+112_backtrace.c:167: at main: BCHECK: invalid pointer ........, size 0x? in strchr
	154	+[returns 255]
	155	+
	156	+[test_bcheck_131]
	157	+112_backtrace.c:169: at main: BCHECK: invalid pointer ........, size 0x? in strrchr
	158	+[returns 255]
	159	+
	160	+[test_bcheck_132]
	161	+112_backtrace.c:171: at main: BCHECK: invalid pointer ........, size 0x? in strdup
142	162	[returns 255]

@@ -60,12 +60,20 @@ main (void) · 59 unmodified lines
60	60	r = (__builtin_memcmp (p, str, sizeof(str)));
61	61	printf(" 11:%d", !r);
62	62
63		− r = (__builtin_strchr(p, 'z') != &p[25]);
	63	+ tmp[0] = '\0';
	64	+ p = __builtin_strncat(tmp, str, __builtin_strlen(str));
	65	+ r = (__builtin_memcmp (p, str, sizeof(str)));
64	66	printf(" 12:%d", !r);
65	67
	68	+ r = (__builtin_strchr(p, 'z') != &p[25]);
	69	+ printf(" 13:%d", !r);
	70	+
	71	+ r = (__builtin_strrchr(p, 'z') != &p[25]);
	72	+ printf(" 14:%d", !r);
	73	+
66	74	p = __builtin_strdup (str);
67	75	r = (__builtin_memcmp (p, str, sizeof(str)));
68		− printf(" 13:%d", !r);
	76	+ printf(" 15:%d", !r);
69	77	__builtin_free(p);
70	78
71	79	p = __builtin_malloc (100);

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