Table of All GCC Warnings

This table collects all gcc warnings used with C++ not enabled by some other option (e.g. -Wall) and indicates the first gcc version the warning appeared in if it's later than gcc 4.6.

It was generated from the files gcc/{common,c-family/c}.opt in basepoints/gcc-11-2851-g050fc8b27a8 commit of gcc source tree using show-gcc-warnings script.

See also the table of the warnings not enabled by some other option.

Warning	Version	Enabled by
abi
abi-tag	4.8
abi=	5.1
address		all
address-of-packed-member	9.1	default
aggregate-return
aggressive-loop-optimizations	4.8	default
aligned-new=	7.1	all
all		all
alloc-size-larger-than=	7.1	all
alloc-zero	7.1
alloca	7.1
alloca-larger-than=	7.1
arith-conversion	10.1
array-bounds		all
array-bounds=	5.1	all
attribute-alias	8.1	default
attribute-alias=	9.1	default
attribute-warning	9.1	default
attributes		default
bool-compare	5.1	all
bool-operation	7.1	all
builtin-declaration-mismatch	7.1	default
builtin-macro-redefined		default
cannot-profile	9.1	default
cast-align
cast-align=strict	8.1
cast-function-type	8.1	extra
cast-qual
catch-value=	8.1	all
char-subscripts		all
chkp	5.1	all
class-conversion	9.1	default
class-memaccess	8.1
clobbered		extra
comma-subscript	10.1
comment		all
conditionally-supported	4.9
conversion
conversion-null		default
coverage-mismatch		default
cpp		default
ctad-maybe-unsupported	11.1
ctor-dtor-privacy
dangling-else	7.1	parentheses
date-time	4.9
delete-incomplete	4.9	default
delete-non-virtual-dtor	4.7	all
deprecated		default
deprecated-copy	9.1
deprecated-copy-dtor	9.1
deprecated-declarations		default
deprecated-enum-enum-conversion	11.1
deprecated-enum-float-conversion	11.1
disabled-optimization
div-by-zero		default
double-promotion
duplicated-branches	7.1
duplicated-cond	6.1
empty-body		extra
endif-labels		default
enum-compare		all
expansion-to-defined	7.1	extra
extra		extra
extra-semi	8.1
float-conversion	4.9	conversion
float-equal
format
format-contains-nul		format=
format-diag	10.1	format=
format-extra-args		format=
format-nonliteral		format=
format-overflow=	7.1	format=
format-security		format=
format-signedness	5.1
format-truncation=	7.1	format=
format-zero-length	4.7	format=
format=	4.8	all
frame-address	6.1	all
frame-larger-than=
free-nonheap-object	4.7	default
hsa	6.1	default
if-not-aligned	8.1	default
ignored-attributes	6.1	default
ignored-qualifiers		extra
implicit-fallthrough=	7.1	extra
inaccessible-base	10.1	default
inherited-variadic-ctor	4.8	default
init-list-lifetime	9.1	default
init-self		all
inline
int-in-bool-context	7.1	all
int-to-pointer-cast		default
invalid-imported-macros	11.1
invalid-memory-model	4.7	default
invalid-offsetof		default
invalid-pch
larger-than=
literal-suffix	4.8	default
logical-not-parentheses	5.1	all
logical-op	6.1
long-long
lto-type-mismatch	6.1	default
main		all pedantic
maybe-uninitialized	4.7	uninitialized
memset-elt-size	7.1	all
memset-transposed-args	5.1	all
misleading-indentation	6.1	all
mismatched-tags	10.1
missing-attributes	8.1	all
missing-braces		all
missing-declarations
missing-field-initializers		extra
missing-format-attribute
missing-include-dirs
missing-noreturn
missing-profile	9.1	default
mudflap		default
multichar
multiple-inheritance	6.1
multistatement-macros	8.1	all
namespaces	6.1
narrowing	4.7	all
noexcept
noexcept-type	7.1
non-template-friend		default
non-virtual-dtor
nonnull	4.7	format= all
nonnull-compare	6.1	all
normalized=
null-dereference	6.1
odr	5.1	default
old-style-cast
openmp-simd	4.9	all
overflow		default
overlength-strings		pedantic
overloaded-virtual
packed
packed-bitfield-compat
packed-not-aligned	8.1	all
padded
parentheses		all
pedantic	4.8	pedantic
pessimizing-move	9.1
placement-new=	6.1
pmf-conversions		default
pointer-arith		pedantic
pointer-compare	7.1	default
pragmas		default
prio-ctor-dtor	9.1	default
redundant-decls
redundant-move	9.1	extra
redundant-tags	10.1
register	7.1
reorder		all
restrict	7.1
return-local-addr	4.8	default
return-type		all
scalar-storage-order	6.1	default
sequence-point		all
shadow
shadow=compatible-local	7.1	shadow=local
shadow=local	7.1	shadow
shift-count-negative	5.1	default
shift-count-overflow	5.1	default
shift-negative-value	6.1
shift-overflow=	6.1
sign-compare		extra
sign-conversion		conversion
sign-promo
sized-deallocation	5.1	extra
sizeof-array-argument	5.1	default
sizeof-pointer-div	8.1	all
sizeof-pointer-memaccess	5.1	all
stack-protector
stack-usage=	4.7
strict-aliasing
strict-aliasing=		all
strict-null-sentinel
strict-overflow
strict-overflow=		all
string-compare	10.1
stringop-overflow=	7.1
stringop-truncation	8.1
subobject-linkage	6.1	default
suggest-attribute=cold	8.1
suggest-attribute=const
suggest-attribute=format	4.8
suggest-attribute=malloc	8.1
suggest-attribute=noreturn
suggest-attribute=pure
suggest-final-methods	5.1
suggest-final-types	5.1
suggest-override	5.1
switch		all
switch-bool	5.1	default
switch-default
switch-enum
switch-outside-range	10.1	default
switch-unreachable	7.1	default
sync-nand		default
synth
system-headers
tautological-compare	6.1	all
templates	6.1
terminate	6.1	default
trampolines
trigraphs		all
type-limits		extra
undef
uninitialized		extra
unknown-pragmas		all
unreachable-code
unsafe-loop-optimizations
unused		all
unused-but-set-parameter		unused && extra
unused-but-set-variable		unused
unused-const-variable=	6.1	unused-variable
unused-function		unused
unused-label		unused
unused-local-typedefs	4.7	unused
unused-macros
unused-parameter		unused && extra
unused-result		default
unused-value		unused
unused-variable		unused
useless-cast	4.8
varargs	4.8	default
variadic-macros		default
vector-operation-performance	4.7
virtual-inheritance	6.1
virtual-move-assign	4.8	default
vla
vla-larger-than=	7.1
volatile	10.1
volatile-register-var		all
write-strings
zero-as-null-pointer-constant	4.7
zero-length-bounds	10.1	all