.\" Please adjust this date whenever revising the manpage.
-.Dd November 29, 2008
+.Dd December 21, 2008
.Dt CPARSER 1
.Sh NAME
.Nm cparser
.Sh SYNOPSIS
.Nm
.Op Fl c | S | E | -print-ast
+.Op Fl -print-implicit-cast
+.Op Fl -print-parenthesis
.Op Fl std= Ns Ar standard
.Op Fl - Ns Oo Cm no- Oc Ns Cm gcc
.Op Fl - Ns Oo Cm no- Oc Ns Cm ms
.Op Fl D Ns Ar macro Ns Op Ar =defn
.Op Fl U Ns Ar macro
.Op Fl f Ar option
+.Op Fl finput-charset= Ns Ar encoding
.Op Fl b Ar option
.Op Fl l Ar library
.Op Fl o Ar outfile
.Op Fl x Ar language
+.Op Fl Wl, Ns Ar option
+.Op Fl Wp, Ns Ar option
.Ar
.Sh DESCRIPTION
.Nm
By default the result is output to stdout.
.It Fl -print-ast
Output the abstract syntax tree of the parsed input file as C again.
+.It Fl -print-implicit-cast
+When using
+.Fl -print-ast ,
+show casts, which are inserted by the semantic checks.
+.It Fl -print-parenthesis
+When using
+.Fl -print-ast ,
+show all expressions fully parenthesized.
.It Fl std= Ns Ar standard
Select the language standard.
Supported values are:
switch to deactivate it.
.It Fl Waddress
Warn about suspicious use of addresses, like using the address of a function or variable as boolean condition or comparing with the address of a string literal.
+.It Fl Waggregate-return
+Warn about defining or calling a function, which returns a struct or union by value.
.It Fl Wall
Activate most warnings.
In particular these are
.Fl Winit-self ,
.Fl Wmain ,
.Fl Wnonnull ,
+.Fl Wparentheses ,
.Fl Wpointer-arith ,
.Fl Wredundant-decls ,
.Fl Wreturn-type ,
.Fl Wunused-parameter ,
.Fl Wunused-value ,
.Fl Wunused-variable .
+.It Fl Wcast-qual
+Warn whenever a pointer cast removes qualifiers from the pointed-to type, e.g. casting a const char* to char*.
+.It Fl Wchar-subscripts
+Warn about using an expression of type char as array subscript, e.g. char\ c; arr[c].
.It Fl Wdeclaration-after-statement
Warn about mixing declarations and statements, which is not allowed prior to C99.
+.It Fl Wdiv-by-zero
+Warn about compile-time integer division by zero.
.It Fl Wempty-statement
-Warn about empty statements, i.e. statements which only consist of a single ';'.
+Warn about empty statements, i.e. statements which only consist of a single
+.Sq \&; .
Use {} as replacement to avoid this warning.
.It Fl Werror
-Treat warnings as errors, i.e. abort compilation when a warning is encountered.
+Treat warnings as errors, i.e. do not continue after parsing when a warning is encountered.
+.It Fl Werror-implicit-function-declaration
+Generate an error, when calling a function without a prior declaration.
.It Fl Wextra
Activate some more warnings.
In particular these are
.Fl Wempty-statement ,
.Fl Wunused-parameter ,
.Fl Wunused-value .
+.It Fl Wfatal-errors
+Immediately abort compilation when encountering an error.
.It Fl Wformat
Check format strings of char and wchar_t functions.
.It Fl Wimplicit
Warn about calling a function without a prior declaration.
.It Fl Wimplicit-int
Warn about declarations whose declaration specifiers do not include a type specifier.
+.It Fl Winit-self
+Warn about uninitialized variables which are initialized with themselves.
+.It Fl Wlong-long
+Warn if the type
+.Sq long long
+is used.
+.It Fl Wmain
+Warn if the type of
+.Sq main
+is suspicious, i.e. if it is not a non-static function declared as either int\ main(void), int\ main(int,\ char**) or, as an extension, int\ main(int,\ char**,\ char**).
+.It Fl Wmissing-declarations
+Warn if a non-static function or a global variable without a storage class is defined without a prior declaration.
+This is typically a sign of a missing #include or that the object should be static.
+.It Fl Wmissing-noreturn
+Warn about functions, which are candidates for the attribute
+.Sq noreturn .
+.It Fl Wmissing-prototypes
+Warn if a global function is defined without a previous prototype declaration.
+.It Fl Wmultichar
+Warn if a multicharacter constant
+.Pf ( Sq FOOF )
+is used.
+.It Fl Wnested-externs
+Warn if an
+.Sq extern
+declaration is encountered within a function.
+.It Fl Wparentheses
+Warn if parentheses are omitted in certain contexts.
+Warn if an assignment is used as condition, e.g. if\ (x\ =\ 23).
+Warn if && without parentheses is used within ||, e.g. if\ (x\ ||\ y\ &&\ z).
+Warn if it there may be confusion which
+.Sq if Ns
+-statement an
+.Sq else Ns
+-branch belongs to, e.g. if\ (x)\ if\ (y)\ {}\ else\ {}.
+Warn if cascaded comparisons appear which do not have their mathematical meaning, e.g. if\ (23\ <=\ x\ <\ 42).
+Warn if + or - is used as operand of << or >>, e.g. x\ +\ y\ <<\ z.
.It Fl Wredundant-decls
Warn about redundant declarations, i.e. multiple declarations of the same object or static forward declarations which have no use before their definition.
+.It Fl Wshadow
+Warn when a new declaration shadows another declaration with the same name in an outer scope.
.It Fl Wunreachable-code
Warn when the compiler determines that a statement (or in some cases a part thereof) will never be executed.
.It Fl Wunused
.Fl Wunused-value ,
.Fl Wunused-variable .
.It Fl Wunused-parameter
-Warn when a parameter is never used or only ever read to calculate its own new value, e.g. x = x + 1.
+Warn when a parameter is never used or only ever read to calculate its own new value, e.g. x\ =\ x\ +\ 1.
.It Fl Wunused-variable
-Warn when a variable is never used or only ever read to calculate its own new value, e.g. x = x + 1.
+Warn when a variable is never used or only ever read to calculate its own new value, e.g. x\ =\ x\ +\ 1.
.It Fl w
Suppress all warnings.
.It Fl I Ar dir
Use
.Fl fhelp
to get a list of supported optimizer options.
+.It Fl finput-charset= Ns Ar encoding
+Select the encoding of the input.
+Supported values are
+.Cm ISO_8859-1:1987
+(aliases
+.Cm CP819 ,
+.Cm IBM819 ,
+.Cm ISO-8859-1 ,
+.Cm ISO8859-1 ,
+.Cm ISO_8859-1 ,
+.Cm csISOLatin1 ,
+.Cm iso-ir-100 ,
+.Cm l1
+and
+.Cm latin1 Ns
+),
+.Cm ISO-8859-15
+(aliases
+.Cm ISO8859-15 ,
+.Cm ISO_8859-15
+and
+.Cm Latin-9 Ns
+),
+.Cm windows-1252
+(alias
+.Cm cp1252 Ns
+) and
+.Cm UTF-8
+(default).
+Case is ignored.
+.It Fl f Ns Oo Cm no- Oc Ns Cm show-column
+Show the column number in diagnostic messages.
+.It Fl fsigned-char
+Define
+.Sq char
+to have the same range, representation and behaviour as
+.Sq signed char .
+.It Fl funsigned-char
+Define
+.Sq char
+to have the same range, representation and behaviour as
+.Sq unsigned char .
.It Fl b Ar option
Set a backend option.
Use
.It Cm none
Revert to auto-detection
.El
+.It Fl Wl, Ns Ar option
+Pass
+.Ar option
+to the linker.
+.It Fl Wp, Ns Ar option
+Pass
+.Ar option
+to the preprocessor.
.El
.Sh SEE ALSO
.Xr gcc 1 ,
.Pp
.Nm
needs to support more switches for better GCC compatibility.
+.Pp
+This manual page is incomplete.
.Sh AUTHORS
.An -nosplit
.Nm
projects / cparser / blobdiff