1# python3 2# Copyright (C) 2019 The Android Open Source Project 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# http://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15 16"""Warning patterns for C/C++ compiler, but not clang-tidy.""" 17 18# No need of doc strings for trivial small functions. 19# pylint:disable=missing-function-docstring 20 21import re 22 23# pylint:disable=relative-beyond-top-level 24from .severity import Severity 25 26 27def cpp_warn(severity, description, pattern_list): 28 return { 29 'category': 'C/C++', 30 'severity': severity, 31 'description': description, 32 'patterns': pattern_list 33 } 34 35 36def fixmenow(description, pattern_list): 37 return cpp_warn(Severity.FIXMENOW, description, pattern_list) 38 39 40def high(description, pattern_list): 41 return cpp_warn(Severity.HIGH, description, pattern_list) 42 43 44def medium(description, pattern_list): 45 return cpp_warn(Severity.MEDIUM, description, pattern_list) 46 47 48def low(description, pattern_list): 49 return cpp_warn(Severity.LOW, description, pattern_list) 50 51 52def skip(description, pattern_list): 53 return cpp_warn(Severity.SKIP, description, pattern_list) 54 55 56def harmless(description, pattern_list): 57 return cpp_warn(Severity.HARMLESS, description, pattern_list) 58 59 60warn_patterns = [ 61 # pylint does not recognize g-inconsistent-quotes 62 # pylint:disable=line-too-long,bad-option-value,g-inconsistent-quotes 63 medium('Implicit function declaration', 64 [r".*: warning: implicit declaration of function .+", 65 r".*: warning: implicitly declaring library function"]), 66 skip('skip, conflicting types for ...', 67 [r".*: warning: conflicting types for '.+'"]), 68 high('Expression always evaluates to true or false', 69 [r".*: warning: comparison is always .+ due to limited range of data type", 70 r".*: warning: comparison of unsigned .*expression .+ is always true", 71 r".*: warning: comparison of unsigned .*expression .+ is always false"]), 72 high('Use transient memory for control value', 73 [r".*: warning: .+Using such transient memory for the control value is .*dangerous."]), 74 high('Return address of stack memory', 75 [r".*: warning: Address of stack memory .+ returned to caller", 76 r".*: warning: Address of stack memory .+ will be a dangling reference"]), 77 high('Infinite recursion', 78 [r".*: warning: all paths through this function will call itself"]), 79 high('Potential buffer overflow', 80 [r".*: warning: Size argument is greater than .+ the destination buffer", 81 r".*: warning: Potential buffer overflow.", 82 r".*: warning: String copy function overflows destination buffer"]), 83 medium('Incompatible pointer types', 84 [r".*: warning: assignment from incompatible pointer type", 85 r".*: warning: return from incompatible pointer type", 86 r".*: warning: passing argument [0-9]+ of '.*' from incompatible pointer type", 87 r".*: warning: initialization from incompatible pointer type"]), 88 high('Incompatible declaration of built in function', 89 [r".*: warning: incompatible implicit declaration of built-in function .+"]), 90 high('Incompatible redeclaration of library function', 91 [r".*: warning: incompatible redeclaration of library function .+"]), 92 high('Null passed as non-null argument', 93 [r".*: warning: Null passed to a callee that requires a non-null"]), 94 medium('Unused parameter', 95 [r".*: warning: unused parameter '.*'"]), 96 medium('Unused function, variable, label, comparison, etc.', 97 [r".*: warning: '.+' defined but not used", 98 r".*: warning: unused function '.+'", 99 r".*: warning: unused label '.+'", 100 r".*: warning: relational comparison result unused", 101 r".*: warning: lambda capture .* is not used", 102 r".*: warning: private field '.+' is not used", 103 r".*: warning: unused variable '.+'"]), 104 medium('Statement with no effect or result unused', 105 [r".*: warning: statement with no effect", 106 r".*: warning: expression result unused"]), 107 medium('Ignoreing return value of function', 108 [r".*: warning: ignoring return value of function .+Wunused-result"]), 109 medium('Missing initializer', 110 [r".*: warning: missing initializer"]), 111 medium('Need virtual destructor', 112 [r".*: warning: delete called .* has virtual functions but non-virtual destructor"]), 113 skip('skip, near initialization for ...', 114 [r".*: warning: \(near initialization for '.+'\)"]), 115 medium('Expansion of data or time macro', 116 [r".*: warning: expansion of date or time macro is not reproducible"]), 117 medium('Macro expansion has undefined behavior', 118 [r".*: warning: macro expansion .* has undefined behavior"]), 119 medium('Format string does not match arguments', 120 [r".*: warning: format '.+' expects type '.+', but argument [0-9]+ has type '.+'", 121 r".*: warning: more '%' conversions than data arguments", 122 r".*: warning: data argument not used by format string", 123 r".*: warning: incomplete format specifier", 124 r".*: warning: unknown conversion type .* in format", 125 r".*: warning: format .+ expects .+ but argument .+Wformat=", 126 r".*: warning: field precision should have .+ but argument has .+Wformat", 127 r".*: warning: format specifies type .+ but the argument has .*type .+Wformat"]), 128 medium('Too many arguments for format string', 129 [r".*: warning: too many arguments for format"]), 130 medium('Too many arguments in call', 131 [r".*: warning: too many arguments in call to "]), 132 medium('Invalid format specifier', 133 [r".*: warning: invalid .+ specifier '.+'.+format-invalid-specifier"]), 134 medium('Comparison between signed and unsigned', 135 [r".*: warning: comparison between signed and unsigned", 136 r".*: warning: comparison of promoted \~unsigned with unsigned", 137 r".*: warning: signed and unsigned type in conditional expression"]), 138 medium('Comparison between enum and non-enum', 139 [r".*: warning: enumeral and non-enumeral type in conditional expression"]), 140 medium('libpng: zero area', 141 [r".*libpng warning: Ignoring attempt to set cHRM RGB triangle with zero area"]), 142 medium('Missing braces around initializer', 143 [r".*: warning: missing braces around initializer.*"]), 144 harmless('No newline at end of file', 145 [r".*: warning: no newline at end of file"]), 146 harmless('Missing space after macro name', 147 [r".*: warning: missing whitespace after the macro name"]), 148 low('Cast increases required alignment', 149 [r".*: warning: cast from .* to .* increases required alignment .*"]), 150 medium('Qualifier discarded', 151 [r".*: warning: passing argument [0-9]+ of '.+' discards qualifiers from pointer target type", 152 r".*: warning: assignment discards qualifiers from pointer target type", 153 r".*: warning: passing .+ to parameter of type .+ discards qualifiers", 154 r".*: warning: assigning to .+ from .+ discards qualifiers", 155 r".*: warning: initializing .+ discards qualifiers .+types-discards-qualifiers", 156 r".*: warning: return discards qualifiers from pointer target type"]), 157 medium('Unknown attribute', 158 [r".*: warning: unknown attribute '.+'"]), 159 medium('Attribute ignored', 160 [r".*: warning: '_*packed_*' attribute ignored", 161 r".*: warning: .* not supported .*Wignored-attributes", 162 r".*: warning: attribute declaration must precede definition .+ignored-attributes"]), 163 medium('Visibility problem', 164 [r".*: warning: declaration of '.+' will not be visible outside of this function"]), 165 medium('Visibility mismatch', 166 [r".*: warning: '.+' declared with greater visibility than the type of its field '.+'"]), 167 medium('Shift count greater than width of type', 168 [r".*: warning: (left|right) shift count >= width of type"]), 169 medium('extern <foo> is initialized', 170 [r".*: warning: '.+' initialized and declared 'extern'", 171 r".*: warning: 'extern' variable has an initializer"]), 172 medium('Old style declaration', 173 [r".*: warning: 'static' is not at beginning of declaration"]), 174 medium('Missing return value', 175 [r".*: warning: control reaches end of non-void function"]), 176 medium('Implicit int type', 177 [r".*: warning: type specifier missing, defaults to 'int'", 178 r".*: warning: type defaults to 'int' in declaration of '.+'"]), 179 medium('Main function should return int', 180 [r".*: warning: return type of 'main' is not 'int'"]), 181 medium('Variable may be used uninitialized', 182 [r".*: warning: '.+' may be used uninitialized in this function"]), 183 high('Variable is used uninitialized', 184 [r".*: warning: '.+' is used uninitialized in this function", 185 r".*: warning: variable '.+' is uninitialized when used here"]), 186 medium('ld: possible enum size mismatch', 187 [r".*: warning: .* uses variable-size enums yet the output is to use 32-bit enums; use of enum values across objects may fail"]), 188 medium('Pointer targets differ in signedness', 189 [r".*: warning: pointer targets in initialization differ in signedness", 190 r".*: warning: pointer targets in assignment differ in signedness", 191 r".*: warning: pointer targets in return differ in signedness", 192 r".*: warning: pointer targets in passing argument [0-9]+ of '.+' differ in signedness"]), 193 medium('Assuming overflow does not occur', 194 [r".*: warning: assuming signed overflow does not occur when assuming that .* is always (true|false)"]), 195 medium('Suggest adding braces around empty body', 196 [r".*: warning: suggest braces around empty body in an 'if' statement", 197 r".*: warning: empty body in an if-statement", 198 r".*: warning: suggest braces around empty body in an 'else' statement", 199 r".*: warning: empty body in an else-statement"]), 200 medium('Suggest adding parentheses', 201 [r".*: warning: suggest explicit braces to avoid ambiguous 'else'", 202 r".*: warning: suggest parentheses around arithmetic in operand of '.+'", 203 r".*: warning: suggest parentheses around comparison in operand of '.+'", 204 r".*: warning: logical not is only applied to the left hand side of this comparison", 205 r".*: warning: using the result of an assignment as a condition without parentheses", 206 r".*: warning: .+ has lower precedence than .+ be evaluated first .+Wparentheses", 207 r".*: warning: suggest parentheses around '.+?' .+ '.+?'", 208 r".*: warning: suggest parentheses around assignment used as truth value"]), 209 medium('Static variable used in non-static inline function', 210 [r".*: warning: '.+' is static but used in inline function '.+' which is not static"]), 211 medium('No type or storage class (will default to int)', 212 [r".*: warning: data definition has no type or storage class"]), 213 skip('skip, parameter name (without types) in function declaration', 214 [r".*: warning: parameter names \(without types\) in function declaration"]), 215 medium('Dereferencing <foo> breaks strict aliasing rules', 216 [r".*: warning: dereferencing .* break strict-aliasing rules"]), 217 medium('Cast from pointer to integer of different size', 218 [r".*: warning: cast from pointer to integer of different size", 219 r".*: warning: initialization makes pointer from integer without a cast"]), 220 medium('Cast to pointer from integer of different size', 221 [r".*: warning: cast to pointer from integer of different size"]), 222 medium('Macro redefined', 223 [r".*: warning: '.+' macro redefined"]), 224 skip('skip, ... location of the previous definition', 225 [r".*: warning: this is the location of the previous definition"]), 226 medium('ld: type and size of dynamic symbol are not defined', 227 [r".*: warning: type and size of dynamic symbol `.+' are not defined"]), 228 medium('Pointer from integer without cast', 229 [r".*: warning: assignment makes pointer from integer without a cast"]), 230 medium('Pointer from integer without cast', 231 [r".*: warning: passing argument [0-9]+ of '.+' makes pointer from integer without a cast"]), 232 medium('Integer from pointer without cast', 233 [r".*: warning: assignment makes integer from pointer without a cast"]), 234 medium('Integer from pointer without cast', 235 [r".*: warning: passing argument [0-9]+ of '.+' makes integer from pointer without a cast"]), 236 medium('Integer from pointer without cast', 237 [r".*: warning: return makes integer from pointer without a cast"]), 238 medium('Ignoring pragma', 239 [r".*: warning: ignoring #pragma .+"]), 240 medium('Pragma warning messages', 241 [r".*: warning: .+W#pragma-messages"]), 242 medium('Variable might be clobbered by longjmp or vfork', 243 [r".*: warning: variable '.+' might be clobbered by 'longjmp' or 'vfork'"]), 244 medium('Argument might be clobbered by longjmp or vfork', 245 [r".*: warning: argument '.+' might be clobbered by 'longjmp' or 'vfork'"]), 246 medium('Redundant declaration', 247 [r".*: warning: redundant redeclaration of '.+'"]), 248 skip('skip, previous declaration ... was here', 249 [r".*: warning: previous declaration of '.+' was here"]), 250 high('Enum value not handled in switch', 251 [r".*: warning: .*enumeration value.* not handled in switch.+Wswitch"]), 252 medium('User defined warnings', 253 [r".*: warning: .* \[-Wuser-defined-warnings\]$"]), 254 medium('Taking address of temporary', 255 [r".*: warning: taking address of temporary"]), 256 medium('Taking address of packed member', 257 [r".*: warning: taking address of packed member"]), 258 medium('Pack alignment value is modified', 259 [r".*: warning: .*#pragma pack alignment value is modified.*Wpragma-pack.*"]), 260 medium('Possible broken line continuation', 261 [r".*: warning: backslash and newline separated by space"]), 262 medium('Undefined variable template', 263 [r".*: warning: instantiation of variable .* no definition is available"]), 264 medium('Inline function is not defined', 265 [r".*: warning: inline function '.*' is not defined"]), 266 medium('Excess elements in initializer', 267 [r".*: warning: excess elements in .+ initializer"]), 268 medium('Decimal constant is unsigned only in ISO C90', 269 [r".*: warning: this decimal constant is unsigned only in ISO C90"]), 270 medium('main is usually a function', 271 [r".*: warning: 'main' is usually a function"]), 272 medium('Typedef ignored', 273 [r".*: warning: 'typedef' was ignored in this declaration"]), 274 high('Address always evaluates to true', 275 [r".*: warning: the address of '.+' will always evaluate as 'true'"]), 276 fixmenow('Freeing a non-heap object', 277 [r".*: warning: attempt to free a non-heap object '.+'"]), 278 medium('Array subscript has type char', 279 [r".*: warning: array subscript .+ type 'char'.+Wchar-subscripts"]), 280 medium('Constant too large for type', 281 [r".*: warning: integer constant is too large for '.+' type"]), 282 medium('Constant too large for type, truncated', 283 [r".*: warning: large integer implicitly truncated to unsigned type"]), 284 medium('Overflow in expression', 285 [r".*: warning: overflow in expression; .*Winteger-overflow"]), 286 medium('Overflow in implicit constant conversion', 287 [r".*: warning: overflow in implicit constant conversion"]), 288 medium('Declaration does not declare anything', 289 [r".*: warning: declaration 'class .+' does not declare anything"]), 290 medium('Initialization order will be different', 291 [r".*: warning: '.+' will be initialized after", 292 r".*: warning: field .+ will be initialized after .+Wreorder"]), 293 skip('skip, ....', 294 [r".*: warning: '.+'"]), 295 skip('skip, base ...', 296 [r".*: warning: base '.+'"]), 297 skip('skip, when initialized here', 298 [r".*: warning: when initialized here"]), 299 medium('Parameter type not specified', 300 [r".*: warning: type of '.+' defaults to 'int'"]), 301 medium('Missing declarations', 302 [r".*: warning: declaration does not declare anything"]), 303 medium('Missing noreturn', 304 [r".*: warning: function '.*' could be declared with attribute 'noreturn'"]), 305 medium('User warning', 306 [r".*: warning: #warning \".+\""]), 307 medium('Vexing parsing problem', 308 [r".*: warning: empty parentheses interpreted as a function declaration"]), 309 medium('Dereferencing void*', 310 [r".*: warning: dereferencing 'void \*' pointer"]), 311 medium('Comparison of pointer and integer', 312 [r".*: warning: ordered comparison of pointer with integer zero", 313 r".*: warning: .*comparison between pointer and integer"]), 314 medium('Use of error-prone unary operator', 315 [r".*: warning: use of unary operator that may be intended as compound assignment"]), 316 medium('Conversion of string constant to non-const char*', 317 [r".*: warning: deprecated conversion from string constant to '.+'"]), 318 medium('Function declaration isn''t a prototype', 319 [r".*: warning: function declaration isn't a prototype"]), 320 medium('Type qualifiers ignored on function return value', 321 [r".*: warning: type qualifiers ignored on function return type", 322 r".*: warning: .+ type qualifier .+ has no effect .+Wignored-qualifiers"]), 323 medium('<foo> declared inside parameter list, scope limited to this definition', 324 [r".*: warning: '.+' declared inside parameter list"]), 325 skip('skip, its scope is only this ...', 326 [r".*: warning: its scope is only this definition or declaration, which is probably not what you want"]), 327 low('Line continuation inside comment', 328 [r".*: warning: multi-line comment"]), 329 low('Comment inside comment', 330 [r".*: warning: '.+' within block comment .*-Wcomment"]), 331 low('Deprecated declarations', 332 [r".*: warning: .+ is deprecated.+deprecated-declarations"]), 333 low('Deprecated register', 334 [r".*: warning: 'register' storage class specifier is deprecated"]), 335 low('Converts between pointers to integer types with different sign', 336 [r".*: warning: .+ converts between pointers to integer types with different sign"]), 337 harmless('Extra tokens after #endif', 338 [r".*: warning: extra tokens at end of #endif directive"]), 339 medium('Comparison between different enums', 340 [r".*: warning: comparison between '.+' and '.+'.+Wenum-compare", 341 r".*: warning: comparison of .* enumeration types .*-Wenum-compare.*"]), 342 medium('Conversion may change value', 343 [r".*: warning: converting negative value '.+' to '.+'", 344 r".*: warning: conversion to '.+' .+ may (alter|change)"]), 345 medium('Converting to non-pointer type from NULL', 346 [r".*: warning: converting to non-pointer type '.+' from NULL"]), 347 medium('Implicit sign conversion', 348 [r".*: warning: implicit conversion changes signedness"]), 349 medium('Converting NULL to non-pointer type', 350 [r".*: warning: implicit conversion of NULL constant to '.+'"]), 351 medium('Zero used as null pointer', 352 [r".*: warning: expression .* zero treated as a null pointer constant"]), 353 medium('Compare pointer to null character', 354 [r".*: warning: comparing a pointer to a null character constant"]), 355 medium('Implicit conversion changes value or loses precision', 356 [r".*: warning: implicit conversion .* changes value from .* to .*-conversion", 357 r".*: warning: implicit conversion loses integer precision:"]), 358 medium('Passing NULL as non-pointer argument', 359 [r".*: warning: passing NULL to non-pointer argument [0-9]+ of '.+'"]), 360 medium('Class seems unusable because of private ctor/dtor', 361 [r".*: warning: all member functions in class '.+' are private"]), 362 # skip this next one, because it only points out some RefBase-based classes 363 # where having a private destructor is perfectly fine 364 skip('Class seems unusable because of private ctor/dtor', 365 [r".*: warning: 'class .+' only defines a private destructor and has no friends"]), 366 medium('Class seems unusable because of private ctor/dtor', 367 [r".*: warning: 'class .+' only defines private constructors and has no friends"]), 368 medium('In-class initializer for static const float/double', 369 [r".*: warning: in-class initializer for static data member of .+const (float|double)"]), 370 medium('void* used in arithmetic', 371 [r".*: warning: pointer of type 'void \*' used in (arithmetic|subtraction)", 372 r".*: warning: arithmetic on .+ to void is a GNU extension.*Wpointer-arith", 373 r".*: warning: wrong type argument to increment"]), 374 medium('Overload resolution chose to promote from unsigned or enum to signed type', 375 [r".*: warning: passing '.+' chooses '.+' over '.+'.*Wsign-promo"]), 376 skip('skip, in call to ...', 377 [r".*: warning: in call to '.+'"]), 378 high('Base should be explicitly initialized in copy constructor', 379 [r".*: warning: base class '.+' should be explicitly initialized in the copy constructor"]), 380 medium('Return value from void function', 381 [r".*: warning: 'return' with a value, in function returning void"]), 382 medium('Multi-character character constant', 383 [r".*: warning: multi-character character constant"]), 384 medium('Conversion from string literal to char*', 385 [r".*: warning: .+ does not allow conversion from string literal to 'char \*'"]), 386 low('Extra \';\'', 387 [r".*: warning: extra ';' .+extra-semi"]), 388 low('Useless specifier', 389 [r".*: warning: useless storage class specifier in empty declaration"]), 390 low('Duplicate declaration specifier', 391 [r".*: warning: duplicate '.+' declaration specifier"]), 392 low('Comparison of self is always false', 393 [r".*: self-comparison always evaluates to false"]), 394 low('Logical op with constant operand', 395 [r".*: use of logical '.+' with constant operand"]), 396 low('Needs a space between literal and string macro', 397 [r".*: warning: invalid suffix on literal.+ requires a space .+Wliteral-suffix"]), 398 low('Warnings from #warning', 399 [r".*: warning: .+-W#warnings"]), 400 low('Using float/int absolute value function with int/float argument', 401 [r".*: warning: using .+ absolute value function .+ when argument is .+ type .+Wabsolute-value", 402 r".*: warning: absolute value function '.+' given .+ which may cause truncation .+Wabsolute-value"]), 403 low('Using C++11 extensions', 404 [r".*: warning: 'auto' type specifier is a C\+\+11 extension"]), 405 low('Using C++17 extensions', 406 [r".*: warning: .* a C\+\+17 extension .+Wc\+\+17-extensions"]), 407 low('Refers to implicitly defined namespace', 408 [r".*: warning: using directive refers to implicitly-defined namespace .+"]), 409 low('Invalid pp token', 410 [r".*: warning: missing .+Winvalid-pp-token"]), 411 low('need glibc to link', 412 [r".*: warning: .* requires at runtime .* glibc .* for linking"]), 413 medium('Operator new returns NULL', 414 [r".*: warning: 'operator new' must not return NULL unless it is declared 'throw\(\)' .+"]), 415 medium('NULL used in arithmetic', 416 [r".*: warning: NULL used in arithmetic", 417 r".*: warning: comparison between NULL and non-pointer"]), 418 medium('Misspelled header guard', 419 [r".*: warning: '.+' is used as a header guard .+ followed by .+ different macro"]), 420 medium('Empty loop body', 421 [r".*: warning: .+ loop has empty body"]), 422 medium('Implicit conversion from enumeration type', 423 [r".*: warning: implicit conversion from enumeration type '.+'"]), 424 medium('case value not in enumerated type', 425 [r".*: warning: case value not in enumerated type '.+'"]), 426 medium('Use of deprecated method', 427 [r".*: warning: '.+' is deprecated .+"]), 428 medium('Use of garbage or uninitialized value', 429 [r".*: warning: .+ uninitialized .+\[-Wsometimes-uninitialized\]"]), 430 medium('Sizeof on array argument', 431 [r".*: warning: sizeof on array function parameter will return"]), 432 medium('Bad argument size of memory access functions', 433 [r".*: warning: .+\[-Wsizeof-pointer-memaccess\]"]), 434 medium('Return value not checked', 435 [r".*: warning: The return value from .+ is not checked"]), 436 medium('Possible heap pollution', 437 [r".*: warning: .*Possible heap pollution from .+ type .+"]), 438 medium('Variable used in loop condition not modified in loop body', 439 [r".*: warning: variable '.+' used in loop condition.*Wfor-loop-analysis"]), 440 medium('Closing a previously closed file', 441 [r".*: warning: Closing a previously closed file"]), 442 medium('Unnamed template type argument', 443 [r".*: warning: template argument.+Wunnamed-type-template-args"]), 444 medium('Unannotated fall-through between switch labels', 445 [r".*: warning: unannotated fall-through between switch labels.+Wimplicit-fallthrough"]), 446 medium('Invalid partial specialization', 447 [r".*: warning: class template partial specialization.+Winvalid-partial-specialization"]), 448 medium('Overlapping comparisons', 449 [r".*: warning: overlapping comparisons.+Wtautological-overlap-compare"]), 450 medium('bitwise comparison', 451 [r".*: warning: bitwise comparison.+Wtautological-bitwise-compare"]), 452 medium('int in bool context', 453 [r".*: warning: converting.+to a boolean.+Wint-in-bool-context"]), 454 medium('bitwise conditional parentheses', 455 [r".*: warning: operator.+has lower precedence.+Wbitwise-conditional-parentheses"]), 456 medium('sizeof array div', 457 [r".*: warning: .+number of elements in.+array.+Wsizeof-array-div"]), 458 medium('bool operation', 459 [r".*: warning: .+boolean.+always.+Wbool-operation"]), 460 medium('Undefined bool conversion', 461 [r".*: warning: .+may be.+always.+true.+Wundefined-bool-conversion"]), 462 medium('Typedef requires a name', 463 [r".*: warning: typedef requires a name.+Wmissing-declaration"]), 464 medium('Unknown escape sequence', 465 [r".*: warning: unknown escape sequence.+Wunknown-escape-sequence"]), 466 medium('Unicode whitespace', 467 [r".*: warning: treating Unicode.+as whitespace.+Wunicode-whitespace"]), 468 medium('Unused local typedef', 469 [r".*: warning: unused typedef.+Wunused-local-typedef"]), 470 medium('varargs warnings', 471 [r".*: warning: .*argument to 'va_start'.+\[-Wvarargs\]"]), 472 harmless('Discarded qualifier from pointer target type', 473 [r".*: warning: .+ discards '.+' qualifier from pointer target type"]), 474 harmless('Use snprintf instead of sprintf', 475 [r".*: warning: .*sprintf is often misused; please use snprintf"]), 476 harmless('Unsupported optimizaton flag', 477 [r".*: warning: optimization flag '.+' is not supported"]), 478 harmless('Extra or missing parentheses', 479 [r".*: warning: equality comparison with extraneous parentheses", 480 r".*: warning: .+ within .+Wlogical-op-parentheses"]), 481 harmless('Mismatched class vs struct tags', 482 [r".*: warning: '.+' defined as a .+ here but previously declared as a .+mismatched-tags", 483 r".*: warning: .+ was previously declared as a .+mismatched-tags"]), 484] 485 486 487def compile_patterns(patterns): 488 """Precompiling every pattern speeds up parsing by about 30x.""" 489 for i in patterns: 490 i['compiled_patterns'] = [] 491 for pat in i['patterns']: 492 i['compiled_patterns'].append(re.compile(pat)) 493 494 495compile_patterns(warn_patterns) 496