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Commit | Line | Data |
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12584362 HS |
1 | /* Test that stack protection is done on chosen functions. */ |
2 | ||
3 | /* { dg-do compile { target i?86-*-* x86_64-*-* rs6000-*-* s390x-*-* } } */ | |
4 | /* { dg-options "-O2 -fstack-protector-strong" } */ | |
5 | ||
ff83f9c8 AI |
6 | /* This test checks the presence of __stack_chk_fail function in assembler. |
7 | * Compiler generates _stack_chk_fail_local (wrapper) calls instead for PIC. | |
8 | */ | |
9 | /* { dg-require-effective-target nonpic } */ | |
10 | ||
12584362 | 11 | #include<string.h> |
d8478670 | 12 | |
12584362 HS |
13 | extern int g0; |
14 | extern int* pg0; | |
15 | int | |
16 | goo (int *); | |
17 | int | |
18 | hoo (int); | |
19 | ||
20 | /* Function frame address escaped function call. */ | |
21 | int | |
22 | foo1 () | |
23 | { | |
24 | int i; | |
25 | return goo (&i); | |
26 | } | |
27 | ||
28 | struct ArrayStruct | |
29 | { | |
30 | int a; | |
31 | int array[10]; | |
32 | }; | |
33 | ||
34 | struct AA | |
35 | { | |
36 | int b; | |
37 | struct ArrayStruct as; | |
38 | }; | |
39 | ||
40 | /* Function frame contains array. */ | |
41 | int | |
42 | foo2 () | |
43 | { | |
44 | struct AA aa; | |
45 | int i; | |
46 | for (i = 0; i < 10; ++i) | |
47 | { | |
48 | aa.as.array[i] = i * (i-1) + i / 2; | |
49 | } | |
50 | return aa.as.array[5]; | |
51 | } | |
52 | ||
53 | /* Address computation based on a function frame address. */ | |
54 | int | |
55 | foo3 () | |
56 | { | |
57 | int a; | |
58 | int *p; | |
59 | p = &a + 5; | |
60 | return goo (p); | |
61 | } | |
62 | ||
63 | /* Address cast based on a function frame address. */ | |
64 | int | |
65 | foo4 () | |
66 | { | |
67 | int a; | |
68 | return goo (g0 << 2 ? (int *)(3 * (long)(void *)(&a)) : 0); | |
69 | } | |
70 | ||
71 | /* Address cast based on a local array. */ | |
72 | int | |
73 | foo5 () | |
74 | { | |
75 | short array[10]; | |
76 | return goo ((int *)(array + 5)); | |
77 | } | |
78 | ||
79 | struct BB | |
80 | { | |
81 | int one; | |
82 | int two; | |
83 | int three; | |
84 | }; | |
85 | ||
86 | /* Address computaton based on a function frame address.*/ | |
87 | int | |
88 | foo6 () | |
89 | { | |
90 | struct BB bb; | |
91 | return goo (&bb.one + sizeof(int)); | |
92 | } | |
93 | ||
94 | /* Function frame address escaped via global variable. */ | |
95 | int | |
96 | foo7 () | |
97 | { | |
98 | int a; | |
99 | pg0 = &a; | |
100 | goo (pg0); | |
101 | return *pg0; | |
102 | } | |
103 | ||
104 | /* Check that this covers -fstack-protector. */ | |
105 | int | |
106 | foo8 () | |
107 | { | |
108 | char base[100]; | |
ee92e7ba | 109 | memcpy ((void *)base, (const void *)pg0, 105); /* { dg-warning "writing 105 bytes into a region of size 100" } */ |
12584362 HS |
110 | return (int)(base[32]); |
111 | } | |
112 | ||
113 | /* Check that this covers -fstack-protector. */ | |
114 | int | |
115 | foo9 () | |
116 | { | |
dd787b0c | 117 | char* p = __builtin_alloca (100); |
12584362 HS |
118 | return goo ((int *)(p + 50)); |
119 | } | |
120 | ||
121 | int | |
122 | global2 (struct BB* pbb); | |
123 | ||
124 | /* Address taken on struct. */ | |
125 | int | |
126 | foo10 () | |
127 | { | |
128 | struct BB bb; | |
129 | int i; | |
130 | bb.one = global2 (&bb); | |
131 | for (i = 0; i < 10; ++i) | |
132 | { | |
133 | bb.two = bb.one + bb.two; | |
134 | bb.three = bb.one + bb.two + bb.three; | |
135 | } | |
136 | return bb.three; | |
137 | } | |
138 | ||
6545746e FW |
139 | struct B |
140 | { | |
141 | /* Discourage passing this struct in registers. */ | |
142 | int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; | |
143 | }; | |
144 | ||
145 | struct B global3 (void); | |
146 | ||
147 | int foo11 () | |
148 | { | |
149 | return global3 ().a1; | |
150 | } | |
151 | ||
152 | void foo12 () | |
153 | { | |
154 | global3 (); | |
155 | } | |
156 | ||
157 | /* { dg-final { scan-assembler-times "stack_chk_fail" 12 } } */ |