Gerald Pfeifer wrote:
5. Fix what I have labelled as errors.
That we definitely should do. I believe some things have been changed
in our current development tree (to become GCC 4.3) already. It would
be great could you have a look and perhaps produce a patch for one or
more of these; is this something you could consider?
I updated my graph to the trunk version, and will slowly start sending
patches per the discussion we've had. It's attached in case I disappear
for whatever reason.
I have a question: does -Wextra now imply -Wconversion since
-Wconversion was split into -Wconversion and -Wtraditional-conversion?
Thanks,
Chris
# A --> B option A implies option B
# A --> B C option A implies options B and C
# A && B --> C options A and B together imply C
# A <-- B option A is implied by option B.
# A <-- B || C option A is implied by either option B or option C
# A <-- B && C option A is implied by options B and C together
# A ==> B option A enables option B
# A ==> B C option A enables options B and C
# A <== B option A requires option B (depends on B)
default --> -Wimport -Wdiv-by-zero -Wendif-labels -Wattributes -Wmultichar
-Wnormalized=nfc -Wdeprecated-declarations -Winvalid-offset-of
-Wint-to-pointer-cast -Wpointer-to-int-cast -Woverflow
default (C++) --> -Wwrite-strings
-fsyntax-only
-pedantic --> -Wlong-long -Wvariadic-macros -Wpointer-sign -Woverlength-strings
-pedantic <-- -pedantic-errors
-pedantic-errors --> -pedantic
-w
-Wimport <-- default
-Wchar-subscripts <-- -Wall
-Wcomment <-- -Wall
-Wfatal-errors
-Wformat --> -Wnonnull -Wformat-extra-args -Wformat-zero-length
-Wformat <-- -Wformat=2 || -Wall
-Wformat ==> -Wformat-y2k -Wformat-nonliteral -Wformat-security
-Wformat-y2k <== -Wformat
-Wno-format-extra-args <== -Wformat # false dependency
-Wno-format-zero-length <== -Wformat # false dependency
-Wformat-nonliteral <== -Wformat
-Wformat-security <== -Wformat
-Wformat=2 --> -Wformat -Wformat-y2k -Wformat-nonliteral -Wformat-security
-Wnonnull <-- -Wall || -Wformat
-Winit-self <== -Wuninitialized # depends not only on -O1, but -O(1|2|3|s)
-Wimplicit-int <-- -Wall
-Wimplicit-function-declaration <-- -Wall
-Werror-implicit-function-declaration
-Wimplicit --> -Wimplicit-int -Wimplicit-function-declaration
-Wimplicit <-- -Wall # redundant implication
-Wmain <-- -Wall
-Wmissing-braces <-- -Wall
-Wmissing-include-dirs
-Wparentheses <-- -Wall
-Wsequence-point <-- -Wall
-Wreturn-type <-- -Wall
-Wswitch <-- -Wall
-Wswitch-default
-Wswitch-enum
-Wtrigraphs <-- -Wall
-Wunused-function <-- -Wall
-Wunused-label <-- -Wall
-Wunused-parameter <-- -Wextra && -Wunused
-Wunused-parameter <-- -Wextra && -Wall # redundant implication
-Wunused-variable <-- -Wall
-Wunused-value <-- -Wall
-Wunused --> -Wtrigraphs -Wunused-function -Wunused-label -Wunused-variable
-Wunused-value
-Wunused <-- -Wall # redundant implication
-Wuninitialized <-- -Wall
-Wuninitialized ==> -Winit-self
-Wuninitialized <== -O(1|2|3|s)
-Wunknown-pragmas <== -Wsystem-headers # undocumented
-Wpragmas <-- -Wall # missing "This warning is enabled by `-Wall'".
-Wstrict-aliasing <-- -Wall || -Wstrict-aliasing=2
-Wstrict-aliasing=2 --> -Wstrict-aliasing
-Wstrict-aliasing=2 <== -fstrict-aliasing
-Wall --> -Walways-true -Wchar-subscripts -Wcomment -Wformat -Wnonnull
-Wimplicit-int
-Wimplicit-function-declaration -Wimplicit -Wmain -Wmissing-braces
-Wparentheses -Wsequence-point -Wreturn-type -Wswitch -Wtrigraphs
-Wunused-function -Wunused-label -Wunused-variable -Wunused-value
-Wunused -Wuninitialized -Wpragmas -Wstrict-aliasing
-Wpointer-sign -Wstring-literal-comparison
# clearly not "All of the above -W options combined."
# note that -Wpointer-sign is also below this point.
-W --> -Wextra
-Wextra --> -Wsign-compare -Wold-style-declaration -Woverride-init
-Wmissing-parameter-type -Wmissing-field-initializers
-Wempty-body -Wclobbered
# do we have -Wextra --> -Wconversion now too?
-Wextra && -Wunused --> -Wunused-parameter # s/arguments/parameters/
-Wextra && -Wall --> -Wunused-parameter # redundant implication
-Wdiv-by-zero <-- default
-Wsystem-headers ==> -Wunknown-pragmas
-Wfloat-equal
-Wtraditional
-Wtraditional-conversion
-Wdeclaration-after-statement
-Wundef
-Wendif-labels <-- default
-Wshadow
-Wlarger-than-LEN
-Wunsafe-loop-optimizations
-Wpointer-arith
-Wbad-function-cast
-Wc++-compat
-Wcast-qual
-Wcast-align
-Wwrite-strings <-- default (C++)
-Wclobbered <-- -Wextra
-Wconversion # do we have -Wconversion <-- -Wextra now?
-Wempty-body <-- -Wextra
-Wsign-compare <-- -Wextra
-Waggregate-return
-Walways-true <-- -Wall
-Wattributes <-- default
-Wstrict-prototypes
-Wold-style-declaration <-- -Wextra
-Wold-style-definition
-Wmissing-parameter-type <-- -Wextra
-Wmissing-prototypes
-Wmissing-declarations
-Wmissing-field-initializers <-- -Wextra
-Wmissing-noreturn
-Wmissing-format-attribute
-Wmultichar <-- default
-Wnormalized=none
-Wnormalized=id
-Wnormalized=nfc <-- default
-Wnormalized=nfkc
-Wdeprecated-declarations <-- default
-Woverflow <-- default
-Woverride-init <-- -Wextra
-Wpacked
-Wpadded
-Wredundant-decls
-Wnested-externs
-Wunreachable-code
-Winline
-Winvalid-offset-of <-- default
-Wint-to-pointer-cast <-- default
-Wpointer-to-int-cast <-- default
-Winvalid-pch
-Wlong-long <-- default # not actually the case
-Wlong-long <== -pedantic # should be <-- pedantic
-Wvariadic-macros <-- default # not actually the case
-Wvariadic-macros <-- -pedantic
-Wvolatile-register-var
-Wdisabled-optimization
-Wpointer-sign <-- -Wall || -pedantic
-Werror
-Werror= # note: -Werror=foo --> -Wfoo
-Wstack-protector <== -fstack-protector
-Wstring-literal-comparison <-- -Wall
-Woverlength-strings <-- -pedantic
