1 /* PR tree-optimization/79327 - wrong code at -O2 and -fprintf-return-value
2 { dg-do compile }
3 { dg-options "-O2 -Wall -Wformat-overflow=1 -ftrack-macro-expansion=0" }
4 { dg-require-effective-target int32plus } */
5
6 typedef __SIZE_TYPE__ size_t;
7 typedef __WCHAR_TYPE__ wchar_t;
8
9 #define INT_MAX __INT_MAX__
10 #define INT_MIN (-INT_MAX - 1)
11
12 /* When debugging, define LINE to the line number of the test case to exercise
13 and avoid exercising any of the others. The buffer and objsize macros
14 below make use of LINE to avoid warnings for other lines. */
15 #ifndef LINE
16 # define LINE 0
17 #endif
18
19 void sink (char*, char*);
20
21 int dummy_sprintf (char*, const char*, ...);
22
23 char buffer [256];
24 extern char *ptr;
25
int_range(int min,int max)26 static int int_range (int min, int max)
27 {
28 extern int int_value (void);
29 int n = int_value ();
30 return n < min || max < n ? min : n;
31 }
32
uint_range(unsigned min,unsigned max)33 static unsigned uint_range (unsigned min, unsigned max)
34 {
35 extern unsigned uint_value (void);
36 unsigned n = uint_value ();
37 return n < min || max < n ? min : n;
38 }
39
40 /* Evaluate to an array of SIZE characters when non-negative, or to
41 a pointer to an unknown object otherwise. */
42 #define buffer(size) \
43 ((0 <= size) ? buffer + sizeof buffer - (size) : ptr)
44
45 /* Helper to expand function to either __builtin_f or dummy_f to
46 make debugging GCC easy. */
47 #define FUNC(f) \
48 ((!LINE || LINE == __LINE__) ? __builtin_ ## f : dummy_ ## f)
49
50 /* Macro to verify that calls to __builtin_sprintf (i.e., with no size
51 argument) issue diagnostics by correctly determining the size of
52 the destination buffer. */
53 #define T(size, ...) \
54 (FUNC (sprintf) (buffer (size), __VA_ARGS__), \
55 sink (buffer, ptr))
56
57 /* Return a signed integer in the range [MIN, MAX]. */
58 #define R(min, max) int_range (min, max)
59
60 /* Return a unsigned integer in the range [MIN, MAX]. */
61 #define U(min, max) uint_range (min, max)
62
63 /* Exercise the hh length modifier with ranges. */
test_hh(void)64 void test_hh (void)
65 {
66 T (0, "%hhi", R ( -1, 0)); /* { dg-warning "between 1 and 2 bytes" } */
67 T (0, "%hhi", R ( -1, 1)); /* { dg-warning "between 1 and 2 bytes" } */
68 T (0, "%hhi", R ( -1, 12)); /* { dg-warning "between 1 and 2 bytes" } */
69 T (0, "%hhi", R ( -1, 123)); /* { dg-warning "between 1 and 3 bytes" } */
70 T (0, "%hhi", R ( -1, 128)); /* { dg-warning "between 1 and 4 bytes" } */
71 T (0, "%hhi", R ( -1, 257)); /* { dg-warning "between 1 and 4 bytes" } */
72 T (0, "%hhi", R ( -1, 1234)); /* { dg-warning "between 1 and 4 bytes" } */
73 T (0, "%hhi", R ( -12, -11)); /* { dg-warning "writing 3 bytes" } */
74 T (0, "%hhi", R ( -12, -1)); /* { dg-warning "between 2 and 3 bytes" } */
75 T (0, "%hhi", R ( -12, 0)); /* { dg-warning "between 1 and 3 bytes" } */
76 T (0, "%hhi", R ( -12, 1)); /* { dg-warning "between 1 and 3 bytes" } */
77 T (0, "%hhi", R ( -12, 12)); /* { dg-warning "between 1 and 3 bytes" } */
78 T (0, "%hhi", R ( -12, 123)); /* { dg-warning "between 1 and 3 bytes" } */
79 T (0, "%hhi", R ( -12, 128)); /* { dg-warning "between 1 and 4 bytes" } */
80 T (0, "%hhi", R ( -12, 257)); /* { dg-warning "between 1 and 4 bytes" } */
81 T (0, "%hhi", R ( -12, 1234)); /* { dg-warning "between 1 and 4 bytes" } */
82 T (0, "%hhi", R ( -99, -10)); /* { dg-warning "writing 3 bytes" } */
83 T (0, "%hhi", R (-123, -1)); /* { dg-warning "between 2 and 4 bytes" } */
84 T (0, "%hhi", R (-123, 0)); /* { dg-warning "between 1 and 4 bytes" } */
85 T (0, "%hhi", R (-123, 1)); /* { dg-warning "between 1 and 4 bytes" } */
86 T (0, "%hhi", R (-123, 12)); /* { dg-warning "between 1 and 4 bytes" } */
87 T (0, "%hhi", R (-123, 123)); /* { dg-warning "between 1 and 4 bytes" } */
88 T (0, "%hhi", R (-123, 257)); /* { dg-warning "between 1 and 4 bytes" } */
89 T (0, "%hhi", R (-123, 1234)); /* { dg-warning "between 1 and 4 bytes" } */
90 T (0, "%hhi", R (-129, 1)); /* { dg-warning "between 1 and 4 bytes" } */
91 T (0, "%hhi", R (-130, -129)); /* { dg-warning "writing 3 bytes" } */
92
93 T (0, "%hhi", U ( 0, 127)); /* { dg-warning "between 1 and 3 bytes" } */
94
95 /* The following results in either "127" and "-128" so the ideal result
96 should be "between 3 and 4 bytes" but because of the overflow from
97 128 to -128 in the %hhi directive the input range is reset to that
98 of char, or [CHAR_MIN, CHAR_MAX], and the warning reflects that. */
99 T (0, "%hhi", U ( 127, 128)); /* { dg-warning "between \[13\] and 4 bytes" } */
100 /* The following results in either "-128" or "-127". */
101 T (0, "%hhi", U ( 128, 129)); /* { dg-warning "writing 4 bytes" } */
102 /* The following results in between "-128" and "-99". */
103 T (0, "%hhi", U ( 128, 157)); /* { dg-warning "writing between 3 and 4 bytes" } */
104 /* Between "-128" and "-1". */
105 T (0, "%hhi", U ( 128, 255)); /* { dg-warning "writing between 2 and 4 bytes" } */
106 /* Between "-128" and "0". */
107 T (0, "%hhi", U ( 128, 256)); /* { dg-warning "writing between 1 and 4 bytes" } */
108 /* Between "-128" and "" (zero formats as nothing with zero precision). */
109 T (0, "%.0hhi", U ( 128, 256)); /* { dg-warning "writing up to 4 bytes" } */
110 /* Same as above but with a range of precisions including zero. */
111 T (0, "%.*hhi", /* { dg-warning "writing up to 4 bytes" } */
112 R (0, 1), U ( 128, 256));
113 /* Same as above but with a positive range of precisions. */
114 T (0, "%.*hhi", /* { dg-warning "between 1 and 4 bytes" } */
115 R (1, 2), U ( 128, 256));
116 /* Precision range includes zero but width is non-zero so output cannot
117 be empty. */
118 T (0, "%1.*hhi", /* { dg-warning "between 1 and 4 bytes" } */
119 R (0, 2), U ( 128, 256));
120 /* Same as above but with a width range. */
121 T (0, "%*.*hhi", /* { dg-warning "between 1 and 4 bytes" } */
122 R (1, 2), R (0, 2), U ( 128, 256));
123 /* Same as above but this time width range does include zero. */
124 T (0, "%*.*hhi", /* { dg-warning "up to 4 bytes" } */
125 R (0, 2), R (0, 2), U ( 128, 256));
126
127 /* Range of precisions in excess of the number of digits and sign. */
128 T (0, "%.*hhi", /* { dg-warning "between 5 and 8 bytes" } */
129 R (5, 7), U ( 128, 256));
130
131 /* Between "-128" and "+0". */
132 T (0, "%+hhi", U ( 128, 256)); /* { dg-warning "between 2 and 4 bytes" } */
133 /* Between "-128" and " 0". */
134 T (0, "% hhi", U ( 128, 256)); /* { dg-warning "between 2 and 4 bytes" } */
135
136 T (0, "%hhu", R ( -1, 1)); /* { dg-warning "between 1 and 3 bytes" } */
137 T (0, "%hhu", R ( -1, 12)); /* { dg-warning "between 1 and 3 bytes" } */
138 T (0, "%hhu", R ( -1, 123)); /* { dg-warning "between 1 and 3 bytes" } */
139 T (0, "%hhu", R ( -1, 128)); /* { dg-warning "between 1 and 3 bytes" } */
140 T (0, "%hhu", R ( -1, 257)); /* { dg-warning "between 1 and 3 bytes" } */
141 T (0, "%hhu", R ( -1, 1234)); /* { dg-warning "between 1 and 3 bytes" } */
142 T (0, "%hhu", R ( -12, 1)); /* { dg-warning "between 1 and 3 bytes" } */
143 T (0, "%hhu", R ( -12, 12)); /* { dg-warning "between 1 and 3 bytes" } */
144 T (0, "%hhu", R ( -12, 123)); /* { dg-warning "between 1 and 3 bytes" } */
145 T (0, "%hhu", R ( -12, 128)); /* { dg-warning "between 1 and 3 bytes" } */
146 T (0, "%hhu", R ( -12, 257)); /* { dg-warning "between 1 and 3 bytes" } */
147 T (0, "%hhu", R ( -12, 1234)); /* { dg-warning "between 1 and 3 bytes" } */
148 T (0, "%hhu", R (-123, 1)); /* { dg-warning "between 1 and 3 bytes" } */
149 T (0, "%hhu", R (-123, 12)); /* { dg-warning "between 1 and 3 bytes" } */
150 T (0, "%hhu", R (-123, 123)); /* { dg-warning "between 1 and 3 bytes" } */
151 T (0, "%hhu", R (-123, 257)); /* { dg-warning "between 1 and 3 bytes" } */
152 T (0, "%hhu", R (-123, 1234)); /* { dg-warning "between 1 and 3 bytes" } */
153 T (0, "%hhu", R (-129, 1)); /* { dg-warning "between 1 and 3 bytes" } */
154 T (0, "%hhu", R (-199, -159)); /* { dg-warning "writing 2 bytes" } */
155 T (0, "%hhu", R (-255, -250)); /* { dg-warning "writing 1 byte" } */
156 }
157
158 /* Exercise the h length modifier. */
test_h(void)159 void test_h (void)
160 {
161 T (0, "%hi", R ( -1, 0)); /* { dg-warning "between 1 and 2 bytes" } */
162 T (0, "%hi", R ( 0, 1)); /* { dg-warning "writing 1 byte" } */
163 T (0, "%hi", R ( -1, 1)); /* { dg-warning "between 1 and 2 bytes" } */
164 T (0, "%hi", R ( -1, 12)); /* { dg-warning "between 1 and 2 bytes" } */
165 T (0, "%hi", R ( -12, 1)); /* { dg-warning "between 1 and 3 bytes" } */
166 T (0, "%hi", R ( -99, -10)); /* { dg-warning "writing 3 bytes" } */
167 T (0, "%hi", R ( -123, 4)); /* { dg-warning "between 1 and 4 bytes" } */
168 T (0, "%hi", R ( -1234, 56)); /* { dg-warning "between 1 and 5 bytes" } */
169 T (0, "%hi", R ( -1234, 567)); /* { dg-warning "between 1 and 5 bytes" } */
170 T (0, "%hi", R ( -1234, 5678)); /* { dg-warning "between 1 and 5 bytes" } */
171 T (0, "%ho", R (-32768,-32767)); /* { dg-warning "writing 6 bytes" } */
172
173 T (0, "%ho", R ( -1, 0)); /* { dg-warning "between 1 and 6 bytes" } */
174 T (0, "%ho", R ( 0, 1)); /* { dg-warning "writing 1 byte" } */
175 T (0, "%ho", R ( -1, 1)); /* { dg-warning "between 1 and 6 bytes" } */
176 T (0, "%ho", R ( -1, 12)); /* { dg-warning "between 1 and 6 bytes" } */
177 T (0, "%ho", R ( -12, 1)); /* { dg-warning "between 1 and 6 bytes" } */
178 T (0, "%ho", R ( -123, 4)); /* { dg-warning "between 1 and 6 bytes" } */
179 T (0, "%ho", R ( -1234, 56)); /* { dg-warning "between 1 and 6 bytes" } */
180 T (0, "%ho", R ( -1234, 567)); /* { dg-warning "between 1 and 6 bytes" } */
181 T (0, "%ho", R ( -1234, 5678)); /* { dg-warning "between 1 and 6 bytes" } */
182 T (0, "%ho", R (-32768,-32767)); /* { dg-warning "writing 6 bytes" } */
183
184 T (0, "%hu", R ( -1, 0)); /* { dg-warning "between 1 and 5 bytes" } */
185 T (0, "%hu", R ( 0, 1)); /* { dg-warning "writing 1 byte" } */
186 T (0, "%hu", R ( -1, 1)); /* { dg-warning "between 1 and 5 bytes" } */
187 T (0, "%hu", R ( -1, 12)); /* { dg-warning "between 1 and 5 bytes" } */
188 T (0, "%hu", R ( -12, 1)); /* { dg-warning "between 1 and 5 bytes" } */
189 T (0, "%hu", R ( -123, 4)); /* { dg-warning "between 1 and 5 bytes" } */
190 T (0, "%hu", R ( -1234, 56)); /* { dg-warning "between 1 and 5 bytes" } */
191 T (0, "%hu", R ( -1234, 567)); /* { dg-warning "between 1 and 5 bytes" } */
192 T (0, "%hu", R ( -1234, 5678)); /* { dg-warning "between 1 and 5 bytes" } */
193 T (0, "%hu", R (-32768,-32767)); /* { dg-warning "writing 5 bytes" } */
194
195 T (0, "%hx", R (-32768,-32767)); /* { dg-warning "writing 4 bytes" } */
196 }
197
198 /* Exercise integer directives with no length modifier. */
test_diou(void)199 void test_diou (void)
200 {
201 T (0, "%d", R ( -1, 0)); /* { dg-warning "between 1 and 2 bytes" } */
202 T (0, "%i", R ( 0, 1)); /* { dg-warning "writing 1 byte" } */
203 T (0, "%d", R ( -1, 1)); /* { dg-warning "between 1 and 2 bytes" } */
204 T (0, "%i", R ( -1, 12)); /* { dg-warning "between 1 and 2 bytes" } */
205 T (0, "%d", R ( -12, 1)); /* { dg-warning "between 1 and 3 bytes" } */
206 T (0, "%i", R ( -123, 4)); /* { dg-warning "between 1 and 4 bytes" } */
207 T (0, "%d", R ( -1234, 56)); /* { dg-warning "between 1 and 5 bytes" } */
208 T (0, "%i", R ( -1234, 567)); /* { dg-warning "between 1 and 5 bytes" } */
209 T (0, "%d", R ( -1234, 5678)); /* { dg-warning "between 1 and 5 bytes" } */
210
211 T (0, "%u", R ( -1, 0)); /* { dg-warning "between 1 and 10 bytes" } */
212 T (0, "%u", R ( 0, 1)); /* { dg-warning "writing 1 byte" } */
213 T (0, "%u", R ( -1, 1)); /* { dg-warning "between 1 and 10 bytes" } */
214 T (0, "%u", R ( -1, 12)); /* { dg-warning "between 1 and 10 bytes" } */
215 T (0, "%u", R ( -12, 1)); /* { dg-warning "between 1 and 10 bytes" } */
216 T (0, "%u", R ( -123, 4)); /* { dg-warning "between 1 and 10 bytes" } */
217 T (0, "%u", R ( -1234, 56)); /* { dg-warning "between 1 and 10 bytes" } */
218 T (0, "%u", R ( -1234, 567)); /* { dg-warning "between 1 and 10 bytes" } */
219 T (0, "%u", R ( -1234, 5678)); /* { dg-warning "between 1 and 10 bytes" } */
220
221 T (0, "%o", R ( -1, 0)); /* { dg-warning "between 1 and 11 bytes" } */
222 T (0, "%o", R ( -2, 1)); /* { dg-warning "between 1 and 11 bytes" } */
223 T (0, "%o", R ( 0, 1)); /* { dg-warning "writing 1 byte" } */
224
225 T (0, "%x", R ( -1, 0)); /* { dg-warning "between 1 and 8 bytes" } */
226 T (0, "%x", R ( -2, 1)); /* { dg-warning "between 1 and 8 bytes" } */
227 T (0, "%x", R ( 0, 1)); /* { dg-warning "writing 1 byte" } */
228 }
229