X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=warning.h;h=dcd2bd9c75a9467ff67762b7170c40f370c47288;hb=a175b2b77da865fd556a68cb6fa0227ca5015b60;hp=e156c4042b44da4b1f79fe86c415e5aceb51da56;hpb=da1c2bddeba34326ef288302e4f7129584041df1;p=cparser diff --git a/warning.h b/warning.h index e156c40..dcd2bd9 100644 --- a/warning.h +++ b/warning.h @@ -1,6 +1,6 @@ /* * This file is part of cparser. - * Copyright (C) 2007-2008 Matthias Braun + * Copyright (C) 2007-2009 Matthias Braun * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -24,86 +24,115 @@ void set_warning_opt(const char *opt); -typedef struct warning_t { -#if 0 // TODO - bool aggregate_return:1; /**< Warn if any functions that return structures or unions are defined or called */ - bool bad_function_cast:1; /**< Warn whenever a function call is cast to a non-matching type */ -#endif - bool attribute:1; /**< Warn if an unexpected `__attribute__' is used or function attributes applied to variables, etc. */ - bool char_subscripts:1; /**< Warn if an array subscript has the type 'char' */ - bool format:1; /**< Check printf-style format strings */ - bool nonnull:1; /**< Warn about passing a null pointer for arguments marked nonnull */ -#if 0 // TODO - bool cast_align:1; /**< Warn whenever a pointer is cast such that the required alignment of the target is increased */ - bool cast_qual:1; /**< Warn whenever a pointer is cast so as to remove a type qualifier from the target type */ - bool conversion:1; /**< Warn if a prototype causes a type conversion that is different from what would happen to the same argument in the absence of a prototype */ -#endif - bool declaration_after_statement:1; /**< Warn when a declaration is found after a statement in a block */ - bool deprecated_declarations:1; /* TODO implement for types */ /**< Warn about uses of functions, variables and types marked as deprecated by using the 'deprecated' attribute */ +void disable_all_warnings(void); + +void print_warning_opt_help(void); + +typedef enum warning_t { + WARN_ADDRESS, /**< Warn about suspicious uses of memory addresses */ + WARN_AGGREGATE_RETURN, /**< Warn if any functions that return structures or unions are defined or called */ + WARN_ATTRIBUTE, /**< Warn if an unexpected `__attribute__' is used or function attributes applied to variables, etc. */ #if 0 // TODO - bool div_by_zero:1; /**< Warn about compile-time integer division by zero */ + WARN_BAD_FUNCTION_CAST, /**< Warn whenever a function call is cast to a non-matching type */ + WARN_CAST_ALIGN, /**< Warn whenever a pointer is cast such that the required alignment of the target is increased */ #endif - bool empty_statement:1; /**< Warn about empty statements, i.e. lone ';' */ + WARN_CAST_QUAL, /**< Warn whenever a pointer is cast so as to remove a type qualifier from the target type */ + WARN_CHAR_SUBSCRIPTS, /**< Warn if an array subscript has the type 'char' */ + WARN_COMMENT, /**< Warn whenever a comment-start sequence appears in a comment, or whenever a Backslash-Newline appears in a '//' comment. */ + WARN_CONVERSION, /**< Warn if a prototype causes a type conversion that is different from what would happen to the same argument in the absence of a prototype */ #if 0 // TODO - bool endif_labels:1; /**< Warn whenever an '#else' or an '#endif' are followed by text */ + WARN_CPP_COMPAT, /**< Warn about ISO C constructs that are outside of the common subset of ISO C and ISO C++. */ #endif - bool fatal_errors:1; /**< First error stops the compilation */ - bool float_equal:1; /**< Warn if floating point values are used in equality comparisons */ - bool implicit_function_declaration:1; /**< Warn whenever a function is used before being declared */ - bool implicit_int:1; /**< Warn when a declaration does not specify a type */ + WARN_DECLARATION_AFTER_STATEMENT, /**< Warn when a declaration is found after a statement in a block */ + WARN_DEPRECATED_DECLARATIONS, /* TODO implement for types */ /**< Warn about uses of functions, variables and types marked as deprecated by using the 'deprecated' attribute */ + WARN_DIV_BY_ZERO, /**< Warn about compile-time integer division by zero */ + WARN_EMPTY_BODY, /**< Warn about an empty body of an if or else statement */ + WARN_EMPTY_STATEMENT, /**< Warn about empty statements, i.e. lone ';' */ #if 0 // TODO - bool inline:1; /**< Warn if a function can not be inlined and it was declared as inline */ + WARN_ENDIF_LABELS, /**< Warn whenever an '#else' or an '#endif' are followed by text */ #endif - bool long_long:1; /**< Warn if 'long long' type is used */ - bool main:1; /**< Warn if the type of 'main' is suspicious */ + WARN_ERROR, /**< Treat warnings as errors */ + WARN_FATAL_ERRORS, /**< First error stops the compilation */ + WARN_FLOAT_EQUAL, /**< Warn if floating point values are used in equality comparisons */ + WARN_FORMAT, /**< Check printf-style format strings */ + WARN_IGNORED_QUALIFIERS, /**< Warn when type qualifiers are meaningless */ + WARN_IMPLICIT_FUNCTION_DECLARATION, /**< Warn whenever a function is used before being declared */ + WARN_IMPLICIT_INT, /**< Warn when a declaration does not specify a type */ #if 0 // TODO - bool missing_braces:1; /**< Warn if an aggregate or union initializer is not fully bracketed */ + WARN_INLINE, /**< Warn if a function can not be inlined and it was declared as inline */ + WARN_INT_TO_POINTER_CAST, /**< Warn if cast from integer to pointer of different size. */ #endif - bool missing_declarations:1; /**< Warn if a global function is defined without a previous declaration */ + WARN_LONG_LONG, /**< Warn if 'long long' type is used */ + WARN_MAIN, /**< Warn if the type of 'main' is suspicious */ #if 0 // TODO - bool missing_format_attribute:1; /**< If '-Wformat' is enabled, also warn about functions which might be candidates for 'format' attributes */ + WARN_MISSING_BRACES, /**< Warn if an aggregate or union initializer is not fully bracketed */ #endif - bool missing_noreturn:1; /**< Warn about functions which might be candidates for attribute 'noreturn' */ - bool missing_prototypes:1; /**< Warn if a global function is defined without a previous prototype declaration */ - bool multichar:1; /**< Warn if a multicharacter constant ('FOOF') is used. */ - bool nested_externs:1; /**< Warn if an 'extern' declaration is encountered within a function */ + WARN_MISSING_DECLARATIONS, /**< Warn if a global function is defined without a previous declaration */ #if 0 // TODO - bool packed:1; /**< Warn if a structure is given the packed attribute, but the packed attribute has no effect on the layout or size of the structure */ - bool padded:1; /**< Warn if padding is included in a structure, either to align an element of the structure or to align the whole structure */ - bool parentheses:1; /**< Warn if parentheses are omitted in certain contexts (assignment where truth value is expected, if-else-braces) */ + WARN_MISSING_FIELD_INITIALIZERS, /**< Warn if a structure's initializer has some fields missing. */ + WARN_MISSING_FORMAT_ATTRIBUTE, /**< If '-Wformat' is enabled, also warn about functions which might be candidates for 'format' attributes */ #endif - bool pointer_arith:1; /**< Warn about anything that depends on the "size of" a function type or of 'void' */ - bool redundant_decls:1; /**< Warn about redundant declarations */ - bool return_type:1; /* TODO not fully implemented */ /**< Warn about function definitions with a return-type that defaults to 'int'. Also warn about any 'return' statement with no return-value in a function whose return-type is not 'void'. */ - bool s_are_errors:1; /**< Treat warnings as errors */ + WARN_MISSING_NORETURN, /**< Warn about functions which might be candidates for attribute 'noreturn' */ + WARN_MISSING_PROTOTYPES, /**< Warn if a global function is defined without a previous prototype declaration */ + WARN_MULTICHAR, /**< Warn if a multicharacter constant ('FOOF') is used. */ + WARN_NESTED_EXTERNS, /**< Warn if an 'extern' declaration is encountered within a function. */ + WARN_NONNULL, /**< Warn about passing a null pointer for arguments marked nonnull. */ + WARN_OLD_STYLE_DEFINITION, /**< Warn if an old-style function definition is used. */ + WARN_OTHER, /**< Warnings not covered by any other option */ + WARN_PACKED, /**< Warn if a structure is given the packed attribute, but the packed attribute has no effect on the layout or size of the structure */ + WARN_PADDED, /**< Warn if padding is included in a structure, either to align an element of the structure or to align the whole structure */ + WARN_PARENTHESES, /**< Warn if parentheses are omitted in certain contexts (assignment where truth value is expected, if-else-braces) */ + WARN_POINTER_ARITH, /**< Warn about anything that depends on the "size of" a function type or of 'void' */ #if 0 // TODO - bool sequence_point:1; /**< Warn about code that may have undefined semantics because of violations of sequence point rules */ + WARN_POINTER_TO_INT_CAST, /**< Warn if cast from pointer to integer of different size. */ #endif - bool shadow:1; /**< Warn whenever a local variable shadows another local variable, parameter or global variable or whenever a built-in function is shadowed */ - bool sign_compare:1; /**< Warn when a comparison between signed and unsigned values could produce an incorrect result when the signed value is converted to unsigned */ + WARN_REDUNDANT_DECLS, /**< Warn about redundant declarations */ + WARN_RETURN_TYPE, /* TODO not fully implemented */ /**< Warn about function definitions with a return-type that defaults to 'int'. Also warn about any 'return' statement with no return-value in a function whose return-type is not 'void'. */ #if 0 // TODO - bool strict_aliasing:1; /**< Warn about code which might break the strict aliasing rules that the compiler is using for optimization. */ + WARN_SEQUENCE_POINT, /**< Warn about code that may have undefined semantics because of violations of sequence point rules */ #endif - bool strict_prototypes:1; /**< Warn if a function declaration has an unspecified parameter list */ - bool switch_default:1; /**< Warn whenever a 'switch' statement does not have a 'default' case */ - bool switch_enum:1; /**< Warn about 'switch' statements with an enum as index type and missing case labels or case labels outside the enum range TODO has an alias -Wswitch? */ + WARN_SHADOW, /**< Warn whenever a local variable shadows another local variable, parameter or global variable or whenever a built-in function is shadowed */ + WARN_SHADOW_LOCAL, + WARN_SIGN_COMPARE, /**< Warn when a comparison between signed and unsigned values could produce an incorrect result when the signed value is converted to unsigned */ + WARN_STRAY_SEMICOLON, /**< Warn about stray semicolons outside of functions */ #if 0 // TODO - bool traditional:1; /**< Warn about certain constructs that behave differently in traditional and ISO C */ - bool undef:1; /**< Warn if an undefined identifier is evaluated in an '#if' directive */ - bool uninitialized:1; /**< Warn if an automatic variable is used without being initialized or if a variable may be clobbered by a 'setjmp' call. */ + WARN_STRICT_ALIASING, /**< Warn about code which might break the strict aliasing rules that the compiler is using for optimization. */ #endif - bool unknown_pragmas:1; /**< Warn when a #pragma directive is encountered which is not understood */ - bool unreachable_code:1; /**< Warn if the compiler detects that code will never be executed */ - bool unused_function:1; /**< Warn whenever a static function is declared but not defined or a non-inline static function is unused */ - bool unused_label:1; /**< Warn whenever a label is declared but not used */ - bool unused_parameter:1; /**< Warn whenever a function parameter is unused aside from its declaration */ - bool unused_value:1; /**< Warn whenever a statement computes a result that is explicitly not used */ - bool unused_variable:1; /**< Warn whenever a local variable or non-constant static variable is unused aside from its declaration */ + WARN_STRICT_PROTOTYPES, /**< Warn if a function declaration has an unspecified parameter list */ + WARN_SWITCH_DEFAULT, /**< Warn whenever a 'switch' statement does not have a 'default' case */ + WARN_SWITCH_ENUM, /**< Warn about 'switch' statements with an enum as index type and missing case labels or case labels outside the enum range TODO has an alias -Wswitch? */ + WARN_TRADITIONAL, /**< Warn about certain constructs that behave differently in traditional and ISO C */ #if 0 // TODO - bool write_strings:1; /**< Give string constants the type 'const char[LENGTH]' so that copying the address of one into a 'char *' pointer will get a warning */ + WARN_UNDEF, /**< Warn if an undefined identifier is evaluated in an '#if' directive */ #endif + WARN_UNINITIALIZED, /**< Warn if an automatic variable is used without being initialized or if a variable may be clobbered by a 'setjmp' call. */ + WARN_UNKNOWN_PRAGMAS, /**< Warn when a #pragma directive is encountered which is not understood */ + WARN_UNREACHABLE_CODE, /**< Warn if the compiler detects that code will never be executed */ + WARN_UNUSED_FUNCTION, /**< Warn whenever a static function is declared but not defined or a non-inline static function is unused */ + WARN_UNUSED_LABEL, /**< Warn whenever a label is declared but not used */ + WARN_UNUSED_PARAMETER, /**< Warn whenever a function parameter is unused aside from its declaration */ + WARN_UNUSED_VALUE, /**< Warn whenever a statement computes a result that is explicitly not used */ + WARN_UNUSED_VARIABLE, /**< Warn whenever a local variable or non-constant static variable is unused aside from its declaration */ + WARN_WRITE_STRINGS, /**< Give string constants the type 'const char[LENGTH]' so that copying the address of one into a 'char *' pointer will get a warning */ } warning_t; -extern warning_t warning; +typedef enum warn_state_t { + WARN_STATE_NONE = 0, + WARN_STATE_ON = 1U << 0, + WARN_STATE_ERROR = 1U << 1, + WARN_STATE_NO_ERROR = 1U << 2 +} warn_state_t; + +typedef struct warning_switch_t { + warn_state_t state; + char const* const name; +} warning_switch_t; + +warning_switch_t const *get_warn_switch(warning_t); + +static inline bool is_warn_on(warning_t const warn) +{ + return get_warn_switch(warn)->state & WARN_STATE_ON; +} #endif