Hi Ivan, kernel test robot noticed the following build warnings: [auto build test WARNING on shuah-kselftest/kunit] [also build test WARNING on shuah-kselftest/kunit-fixes linus/master v6.9-rc7 next-20240508] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Ivan-Orlov/kunit-Cover-assert-c-with-tests/20240508-212654 base: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git kunit patch link: https://lore.kernel.org/r/20240508132557.599213-1-ivan.orlov0322%40gmail.com patch subject: [PATCH v2] kunit: Cover 'assert.c' with tests config: i386-randconfig-001-20240509 (https://download.01.org/0day-ci/archive/20240509/202405091253.FrHa2zBi-lkp@xxxxxxxxx/config) compiler: clang version 18.1.4 (https://github.com/llvm/llvm-project e6c3289804a67ea0bb6a86fadbe454dd93b8d855) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240509/202405091253.FrHa2zBi-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202405091253.FrHa2zBi-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> lib/kunit/assert.c:35:6: warning: no previous prototype for function 'kunit_assert_print_msg' [-Wmissing-prototypes] 35 | void kunit_assert_print_msg(const struct va_format *message, | ^ lib/kunit/assert.c:35:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 35 | void kunit_assert_print_msg(const struct va_format *message, | ^ | static >> lib/kunit/assert.c:95:23: warning: no previous prototype for function 'is_literal' [-Wmissing-prototypes] 95 | VISIBLE_IF_KUNIT bool is_literal(const char *text, long long value) | ^ lib/kunit/assert.c:95:18: note: declare 'static' if the function is not intended to be used outside of this translation unit 95 | VISIBLE_IF_KUNIT bool is_literal(const char *text, long long value) | ^ | static >> lib/kunit/assert.c:173:23: warning: no previous prototype for function 'is_str_literal' [-Wmissing-prototypes] 173 | VISIBLE_IF_KUNIT bool is_str_literal(const char *text, const char *value) | ^ lib/kunit/assert.c:173:18: note: declare 'static' if the function is not intended to be used outside of this translation unit 173 | VISIBLE_IF_KUNIT bool is_str_literal(const char *text, const char *value) | ^ | static >> lib/kunit/assert.c:217:6: warning: no previous prototype for function 'kunit_assert_hexdump' [-Wmissing-prototypes] 217 | void kunit_assert_hexdump(struct string_stream *stream, | ^ lib/kunit/assert.c:217:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 217 | void kunit_assert_hexdump(struct string_stream *stream, | ^ | static 4 warnings generated. vim +/kunit_assert_print_msg +35 lib/kunit/assert.c 33 34 VISIBLE_IF_KUNIT > 35 void kunit_assert_print_msg(const struct va_format *message, 36 struct string_stream *stream) 37 { 38 if (message->fmt) 39 string_stream_add(stream, "\n%pV", message); 40 } 41 EXPORT_SYMBOL_IF_KUNIT(kunit_assert_print_msg); 42 43 void kunit_fail_assert_format(const struct kunit_assert *assert, 44 const struct va_format *message, 45 struct string_stream *stream) 46 { 47 string_stream_add(stream, "%pV", message); 48 } 49 EXPORT_SYMBOL_GPL(kunit_fail_assert_format); 50 51 void kunit_unary_assert_format(const struct kunit_assert *assert, 52 const struct va_format *message, 53 struct string_stream *stream) 54 { 55 struct kunit_unary_assert *unary_assert; 56 57 unary_assert = container_of(assert, struct kunit_unary_assert, assert); 58 59 if (unary_assert->expected_true) 60 string_stream_add(stream, 61 KUNIT_SUBTEST_INDENT "Expected %s to be true, but is false\n", 62 unary_assert->condition); 63 else 64 string_stream_add(stream, 65 KUNIT_SUBTEST_INDENT "Expected %s to be false, but is true\n", 66 unary_assert->condition); 67 kunit_assert_print_msg(message, stream); 68 } 69 EXPORT_SYMBOL_GPL(kunit_unary_assert_format); 70 71 void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert, 72 const struct va_format *message, 73 struct string_stream *stream) 74 { 75 struct kunit_ptr_not_err_assert *ptr_assert; 76 77 ptr_assert = container_of(assert, struct kunit_ptr_not_err_assert, 78 assert); 79 80 if (!ptr_assert->value) { 81 string_stream_add(stream, 82 KUNIT_SUBTEST_INDENT "Expected %s is not null, but is\n", 83 ptr_assert->text); 84 } else if (IS_ERR(ptr_assert->value)) { 85 string_stream_add(stream, 86 KUNIT_SUBTEST_INDENT "Expected %s is not error, but is: %ld\n", 87 ptr_assert->text, 88 PTR_ERR(ptr_assert->value)); 89 } 90 kunit_assert_print_msg(message, stream); 91 } 92 EXPORT_SYMBOL_GPL(kunit_ptr_not_err_assert_format); 93 94 /* Checks if `text` is a literal representing `value`, e.g. "5" and 5 */ > 95 VISIBLE_IF_KUNIT bool is_literal(const char *text, long long value) 96 { 97 char *buffer; 98 int len; 99 bool ret; 100 101 len = snprintf(NULL, 0, "%lld", value); 102 if (strlen(text) != len) 103 return false; 104 105 buffer = kmalloc(len+1, GFP_KERNEL); 106 if (!buffer) 107 return false; 108 109 snprintf(buffer, len+1, "%lld", value); 110 ret = strncmp(buffer, text, len) == 0; 111 112 kfree(buffer); 113 114 return ret; 115 } 116 EXPORT_SYMBOL_IF_KUNIT(is_literal); 117 118 void kunit_binary_assert_format(const struct kunit_assert *assert, 119 const struct va_format *message, 120 struct string_stream *stream) 121 { 122 struct kunit_binary_assert *binary_assert; 123 124 binary_assert = container_of(assert, struct kunit_binary_assert, 125 assert); 126 127 string_stream_add(stream, 128 KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n", 129 binary_assert->text->left_text, 130 binary_assert->text->operation, 131 binary_assert->text->right_text); 132 if (!is_literal(binary_assert->text->left_text, binary_assert->left_value)) 133 string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld (0x%llx)\n", 134 binary_assert->text->left_text, 135 binary_assert->left_value, 136 binary_assert->left_value); 137 if (!is_literal(binary_assert->text->right_text, binary_assert->right_value)) 138 string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld (0x%llx)", 139 binary_assert->text->right_text, 140 binary_assert->right_value, 141 binary_assert->right_value); 142 kunit_assert_print_msg(message, stream); 143 } 144 EXPORT_SYMBOL_GPL(kunit_binary_assert_format); 145 146 void kunit_binary_ptr_assert_format(const struct kunit_assert *assert, 147 const struct va_format *message, 148 struct string_stream *stream) 149 { 150 struct kunit_binary_ptr_assert *binary_assert; 151 152 binary_assert = container_of(assert, struct kunit_binary_ptr_assert, 153 assert); 154 155 string_stream_add(stream, 156 KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n", 157 binary_assert->text->left_text, 158 binary_assert->text->operation, 159 binary_assert->text->right_text); 160 string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %px\n", 161 binary_assert->text->left_text, 162 binary_assert->left_value); 163 string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %px", 164 binary_assert->text->right_text, 165 binary_assert->right_value); 166 kunit_assert_print_msg(message, stream); 167 } 168 EXPORT_SYMBOL_GPL(kunit_binary_ptr_assert_format); 169 170 /* Checks if KUNIT_EXPECT_STREQ() args were string literals. 171 * Note: `text` will have ""s where as `value` will not. 172 */ > 173 VISIBLE_IF_KUNIT bool is_str_literal(const char *text, const char *value) 174 { 175 int len; 176 177 len = strlen(text); 178 if (len < 2) 179 return false; 180 if (text[0] != '\"' || text[len - 1] != '\"') 181 return false; 182 183 return strncmp(text + 1, value, len - 2) == 0; 184 } 185 EXPORT_SYMBOL_IF_KUNIT(is_str_literal); 186 187 void kunit_binary_str_assert_format(const struct kunit_assert *assert, 188 const struct va_format *message, 189 struct string_stream *stream) 190 { 191 struct kunit_binary_str_assert *binary_assert; 192 193 binary_assert = container_of(assert, struct kunit_binary_str_assert, 194 assert); 195 196 string_stream_add(stream, 197 KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n", 198 binary_assert->text->left_text, 199 binary_assert->text->operation, 200 binary_assert->text->right_text); 201 if (!is_str_literal(binary_assert->text->left_text, binary_assert->left_value)) 202 string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == \"%s\"\n", 203 binary_assert->text->left_text, 204 binary_assert->left_value); 205 if (!is_str_literal(binary_assert->text->right_text, binary_assert->right_value)) 206 string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == \"%s\"", 207 binary_assert->text->right_text, 208 binary_assert->right_value); 209 kunit_assert_print_msg(message, stream); 210 } 211 EXPORT_SYMBOL_GPL(kunit_binary_str_assert_format); 212 213 /* Adds a hexdump of a buffer to a string_stream comparing it with 214 * a second buffer. The different bytes are marked with <>. 215 */ 216 VISIBLE_IF_KUNIT > 217 void kunit_assert_hexdump(struct string_stream *stream, 218 const void *buf, 219 const void *compared_buf, 220 const size_t len) 221 { 222 size_t i; 223 const u8 *buf1 = buf; 224 const u8 *buf2 = compared_buf; 225 226 string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT); 227 228 for (i = 0; i < len; ++i) { 229 if (!(i % 16) && i) 230 string_stream_add(stream, "\n" KUNIT_SUBSUBTEST_INDENT); 231 232 if (buf1[i] != buf2[i]) 233 string_stream_add(stream, "<%02x>", buf1[i]); 234 else 235 string_stream_add(stream, " %02x ", buf1[i]); 236 } 237 } 238 EXPORT_SYMBOL_IF_KUNIT(kunit_assert_hexdump); 239 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
