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Here, is the detailed description of all the error codes which are emitted by emitted by rustc and their support in gccrs. See this gist for more detail.
Error Description: This error indicates that the compiler cannot guarantee a matching pattern for
one or more possible inputs to a match expression. Guaranteed matches are
required in order to assign values to match expressions, or alternatively,
determine the flow of execution.
Error Description: The value of statics and constants must be known at compile time, and they live
for the entire lifetime of a program. Creating a boxed value allocates memory on
the heap at runtime, and therefore cannot be done at compile time.
Error Description: When matching against a range, the compiler verifies that the range is
non-empty. Range patterns include both end-points, so this is equivalent to
requiring the start of the range to be less than or equal to the end of the
range.
Error Description: For any given trait Trait there may be a related type called the trait
object type which is typically written as dyn Trait. In earlier editions of
Rust, trait object types were written as plain Trait (just the name of the
trait, written in type positions) but this was a bit too confusing, so we now
write dyn Trait.
Error Description: During a method call, a value is automatically dereferenced as many times as
needed to make the value's type match the method's receiver. The catch is that
the compiler will only attempt to dereference a number of times up to the
recursion limit (which can be set via the recursion_limit attribute).
Error Description: The built-in function traits are generic over a tuple of the function arguments.
If one uses angle-bracket notation (Fn<(T,), Output=U>) instead of parentheses
(Fn(T) -> U) to denote the function trait, the type parameter should be a
tuple. Otherwise function call notation cannot be used and the trait will not be
implemented by closures.
Error Description: External C functions are allowed to be variadic. However, a variadic function
takes a minimum number of arguments. For example, consider C's variadic printf
function:
Error Description: This error indicates that a lifetime is missing from a type. If it is an error
inside a function signature, the problem may be with failing to adhere to the
lifetime elision rules (see below).
Error Description: An associated function for a trait was defined to be static, but an
implementation of the trait declared the same function to be a method (i.e., to
take a self parameter).
Error Description: An associated function for a trait was defined to be a method (i.e., to take a self parameter), but an implementation of the trait declared the same function
to be static.
Error Description: This error indicates a violation of one of Rust's orphan rules for trait
implementations. The rule concerns the use of type parameters in an
implementation of a foreign trait (a trait defined in another crate), and
states that type parameters must be "covered" by a local type.
Error Description: This error indicates that the compiler is unable to determine whether there is
exactly one unique region in the set of derived region bounds.
Error Description: The #[rustc_on_unimplemented] attribute lets you specify a custom error
message for when a particular trait isn't implemented on a type placed in a
position that needs that trait. For example, when the following code is
compiled:
Error Description: The #[rustc_on_unimplemented] attribute lets you specify a custom error
message for when a particular trait isn't implemented on a type placed in a
position that needs that trait. For example, when the following code is
compiled:
Error Description: The #[rustc_on_unimplemented] attribute lets you specify a custom error
message for when a particular trait isn't implemented on a type placed in a
position that needs that trait. For example, when the following code is
compiled:
Error Description: This error occurs when the compiler is unable to unambiguously infer the
return type of a function or method which is generic on return type, such
as the collect method for Iterators.
Error Description: This error occurs when there is an unsatisfied outlives bound involving an
elided region and a generic type parameter or associated type.
Error Description: Private items cannot be publicly re-exported. This error indicates that you
attempted to pub use a type or value that was not itself public.
Error Description: Private modules cannot be publicly re-exported. This error indicates that you
attempted to pub use a module that was not itself public.
Error Description: An identifier was used like a function name or a value was expected and the
identifier exists but it belongs to a different namespace.
Error Description: A visibility qualifier was used where one is not permitted. Visibility
qualifiers are not permitted on enum variants, trait items, impl blocks, and
extern blocks, as they already share the visibility of the parent item.
Error Description: A lint check attribute was overruled by a forbid directive set as an
attribute on an enclosing scope, or on the command line with the -F option.
Error Description: This error code indicates a mismatch between the lifetimes appearing in the
function signature (i.e., the parameter types and the return type) and the
data-flow found in the function body.
Error Description: This error indicates that the struct, enum or enum variant must be matched
non-exhaustively as it has been marked as non_exhaustive.
Error Description: This error indicates that the struct, enum or enum variant cannot be
instantiated from outside of the defining crate as it has been marked
as non_exhaustive and as such more fields/variants may be added in
future that could cause adverse side effects for this code.
Error Description: This error indicates that there is a mismatch between generic parameters and
impl Trait parameters in a trait declaration versus its impl.
Error Description: A struct, enum, or union with the repr(transparent) representation hint
contains a zero-sized field that requires non-trivial alignment.
Error Description:#[track_caller] requires functions to have the "Rust" ABI for implicitly
receiving caller location. See [RFC 2091] for details on this and other
restrictions.
Error Description: A #[no_coverage] attribute was applied to something which does not show up
in code coverage, or is too granular to be excluded from the coverage report.
Error Description: Static variables with the #[linkage] attribute within external blocks
must have one of the following types, which are equivalent to a nullable
pointer in C:
Error Description: A type alias impl trait can only have its hidden type assigned
when used fully generically (and within their defining scope).
This means
Here, is the detailed description of all the error codes which are emitted by emitted by rustc and their support in gccrs. See this
gistfor more detail.New ErrorCode Framework:
rich-loc&errorcodein parser & expansion errors #2542richlocto paser errors #2566rich_location *function #2574ErrorCodelocation after theerror:#2522List of ErrorCodes:
E0004one or more possible inputs to a match expression. Guaranteed matches are
required in order to assign values to match expressions, or alternatively,
determine the flow of execution.
E0005that a name will be extracted in all cases.
[E0005]#2508xin this scope #2509E0010for the entire lifetime of a program. Creating a boxed value allocates memory on
the heap at runtime, and therefore cannot be done at compile time.
E0013variable cannot refer to a static variable.
E0015constfunction was called in aconstcontext.E0023E0025E0026E0027struct's fields.
E0029E0030non-empty. Range patterns include both end-points, so this is equivalent to
requiring the start of the range to be less than or equal to the end of the
range.
E0033E0034has the same prototype.
E0038Traitthere may be a related type called the traitobject type which is typically written as
dyn Trait. In earlier editions ofRust, trait object types were written as plain
Trait(just the name of thetrait, written in type positions) but this was a bit too confusing, so we now
write
dyn Trait.E0040E0044E0045E0046E0049const parameters.
E0050parameters.
E0053and the trait definition.
E0054[E0054-E0604-E0620-E0606]TypeCasting ErrorCodes #2528E0055needed to make the value's type match the method's receiver. The catch is that
the compiler will only attempt to dereference a number of times up to the
recursion limit (which can be set via the
recursion_limitattribute).E0057E0059If one uses angle-bracket notation (
Fn<(T,), Output=U>) instead of parentheses(
Fn(T) -> U) to denote the function trait, the type parameter should be atuple. Otherwise function call notation cannot be used and the trait will not be
implemented by closures.
E0060takes a minimum number of arguments. For example, consider C's variadic
printffunction:
E0061E0062E0063E0067E0069return;statement butwhose return type is not
().E0070E0071or enum variant.
E0072E0075#[simd]attribute was applied to an empty tuple struct.E0076#[simd]attribute.
E0077#[simd]attribute.
E0080E0081E0084E0091E0092E0093E0094E0106inside a function signature, the problem may be with failing to adhere to the
lifetime elision rules (see below).
E0107E0109E0116E0117E0118enum, union, or trait object.
E0119E0120enums can implement Drop.
E0121_was used within a type on an item's signature.E0124xis already declared in struct #2397E0128E0130E0131mainfunction was defined with generic parameters.E0132startattribute was declared with type parameters.E0133E0138#[start]attribute.E0152E0158const,constparameter orstatichas been referencedin a pattern.
E0161E0164pattern.
E0170E0178+type operator was used in an ambiguous context.E0183Fn*trait.E0184Copytrait was implemented on a type with aDropimplementation.Copytrait was implemented onDrop implementation type- [E0184] #2510E0185implementation of the trait declared the same function to be a method (i.e., to
take a
selfparameter).E0186selfparameter), but an implementation of the trait declared the same functionto be static.
E0191E0195E0197E0198E0199E0200E0201etc.) were defined with the same identifier.
E0203E0204Copytrait was implemented on a type which contains a field that doesn'timplement the
Copytrait.E0206Copytrait was implemented on a type which is neither a struct, anenum, nor a union.
E0207implis notconstrained.
E0210implementations. The rule concerns the use of type parameters in an
implementation of a foreign trait (a trait defined in another crate), and
states that type parameters must be "covered" by a local type.
E0212a trait with uninferred generic parameters.
E0214E0220E0221E0222E0223E0224E0225E0226E0227exactly one unique region in the set of derived region bounds.
E0228be specified.
E0229and
whereclause.E0230#[rustc_on_unimplemented]attribute lets you specify a custom errormessage for when a particular trait isn't implemented on a type placed in a
position that needs that trait. For example, when the following code is
compiled:
E0231#[rustc_on_unimplemented]attribute lets you specify a custom errormessage for when a particular trait isn't implemented on a type placed in a
position that needs that trait. For example, when the following code is
compiled:
E0232#[rustc_on_unimplemented]attribute lets you specify a custom errormessage for when a particular trait isn't implemented on a type placed in a
position that needs that trait. For example, when the following code is
compiled:
E0252items under a new local name.
E0253to import a method from a trait.
E0254already been imported.
E0255module.
E0259that has been imported into the current module.
E0260E0261E0262E0264E0267breakorcontinue) was used inside a closure but outside ofany loop.
E0267#2454E0268breakorcontinue) was used outside of a loop.E0267#2454E0271E0275E0276E0277expected that trait.
E0282E0283E0284return type of a function or method which is generic on return type, such
as the
collectmethod forIterators.E0307selfparameter in a method has an invalid "receiver type".E0308ifcontains&strinstead ofbool#2495E0309enough.
E0310does not live long enough.
E0311elided region and a generic type parameter or associated type.
E0316whereclause contains a nested quantification over lifetimes.E0317ifexpression is missing anelseblock.E0320E0321or enum type.
E0322are provided automatically by the compiler.
E0323E0438#2481E0324unknown trait item#2478E0325E0326E0328Unsize are provided automatically by the compiler.
E0364attempted to
pub usea type or value that was not itself public.E0365attempted to
pub usea module that was not itself public.E0366Dropon a concrete specialization of ageneric type. An example is shown below:
E0367Dropon a specialization of a generic type.E0368+=or^=was applied to a type thatdoesn't support it.
E0369E0370set in the next enum value.
E0371E0373E0374CoerceUnsizedwas implemented on a struct which does not contain a field withan unsized type.
E0375CoerceUnsizedwas implemented on a struct which contains more than one fieldwith an unsized type.
E0376CoerceUnsizedwas implemented on something that isn't a struct.E0377CoerceUnsizedmay only be implemented for a coercion betweenstructures with the same definition.
E0378DispatchFromDyntrait was implemented on something which is not a pointeror a newtype wrapper around a pointer.
E0379E0380E0381E0382E0384E0390E0391E0392E0393Selfin its default value was not specified.E0399E0401they are embedded in.
E0403E0404or
impl.E0405E0407implementation.
E0408across patterns.
E0409across patterns.
E0411Selfkeyword was used outside an impl, trait, or type definition.E0412E0415E0416E0422E0423identifier exists but it belongs to a different namespace.
E0424selfkeyword was used inside of an associated function without a "selfreceiver" parameter.
E0425E0426E0428E0429selfkeyword cannot appear alone as the last segment in ausedeclaration.
E0430selfimport appears more than once in the list.E0431selfimport was made.selfimport was made #2501E0432E0433[E0005]#2508[E0001]warning #2511E0434E0435E0436E0437in the trait was used when implementing the trait.
E0438E0438#2481in the trait was used when implementing the trait.
E0445E0446E0449qualifiers are not permitted on enum variants, trait items, impl blocks, and
extern blocks, as they already share the visibility of the parent item.
E0451E0452E0453forbiddirective set as anattribute on an enclosing scope, or on the command line with the
-Foption.E0454E0455E0457..only found in rlib format, but must be available in dylib format.E0458E0459E0460..which..depends on.E0461..with expected target triple...E0462staticlib..instead ofrlibordylib.E0463E0464E0466E0468E0469E0472asm!) is not supported on this target.E0476E0478E0491E0492E0493Dropimplementation may be dropped during const-eval.E0496E0498pluginattribute was malformed.E0499E0500E0501E0502E0503E0505E0506E0507E0508E0509implements the
Droptrait.E0510E0511E0512E0514rustc.E0515E0516typeofkeyword is currently reserved but unimplemented.E0517#[repr(..)]attribute was placed on an unsupported item.E0518#[inline(..)]attribute was incorrectly placed on something other than afunction or method.
E0519of metadata.
E0520specialized further.
E0521E0522E0524at the same time.
E0525E0527elements in the array being matched.
E0528matched array.
E0529E0530E0531E0532E0533match pattern.
E0534inlineattribute was malformed.E0535inlineattribute.E0536notcfg-predicate was malformed.E0537cfgattribute.E0538E0539E0541E0542sincevalue is missing in a stability attribute.E0543notevalue is missing in a stability attribute.E0544E0545issuevalue is incorrect in a stability attribute.E0546featurevalue is missing in a stability attribute.E0547issuevalue is missing in a stability attribute.E0549deprecatedattribute wasn't paired with astable/unstableattribute with#![feature(staged_api)]enabled.E0550E0551E0552repr optionserror support #2517E0554beta compilers will not comply.
E0556featureattribute was badly formed.E0557E0559E0560E0561pointer type.
E0562impl Traitfor some traitTrait) are onlyallowed as function and inherent impl return types.
E0565E0566E0567E0568E0569#[may_dangle]attribute, thenthat impl must be declared as an
unsafe impl.E0570E0571breakstatement with an argument appeared in a non-looploop.E0572E0573Typegot something else #2479E0574expected.
E0575E0576E0577E0578E0579E0580mainfunction was incorrectly declared.E0581fntype, a lifetime appears only in the return typeand not in the arguments types.
E0582types to the trait.
E0583E0584E0585E0586E0587packedandalignrepresentation hints.E0588packedrepresentation hint has a field withalignrepresentation hint.
E0589Nthat was specified forrepr(align(N))was not a powerof two, or was greater than 2^29.
E0590breakorcontinuekeywords were used in a condition of awhileloopwithout a label.
E0591foo:E0592name.
E0593Fn-based type with an incorrect number of argumentsthan what was expected.
E0594E0596E0597E0599E0600E0601mainfunction was found in a binary crate.bincrate type with others -[E0601]#2512E0602E0603E0604charwas attempted on a type other thanu8.[E0054-E0604-E0620-E0606]TypeCasting ErrorCodes #2528E0605E0606[E0054-E0604-E0620-E0606]TypeCasting ErrorCodes #2528E0607E0608std::ops::Indextrait was performed.
E0609- GodBoltE0610E0614E0615E0616E0617variadicfunction #2627E0618E0620[E0054-E0604-E0620-E0606]TypeCasting ErrorCodes #2528E0621function signature (i.e., the parameter types and the return type) and the
data-flow found in the function body.
E0622E0623E0624E0625E0626yield point.
E0627E0628E0631E0634packedrepresentation hints.E0635#![feature]attribute specified an unknown feature.E0636#![feature]attribute was declared multiple times.E0637'_lifetime name or&Twithout an explicit lifetime name has been usedon illegal place.
E0638non-exhaustively as it has been marked as
non_exhaustive.E0639instantiated from outside of the defining crate as it has been marked
as
non_exhaustiveand as such more fields/variants may be added infuture that could cause adverse side effects for this code.
E0640E0641E0642E0643impl Trait parameters in a trait declaration versus its impl.
E0644E0646mainwith a where clause.E0647startfunction was defined with a where clause.E0648export_nameattribute contains null characters (\0).E0657E0658E0659E0666impl Traittypes cannot appear nested in the generic arguments of otherimpl Traittypes.E0667impl Traitis not allowed in path parameters.E0670async fn.E0689E0690repr(transparent)had two or more fieldsthat were not guaranteed to be zero-sized.
E0691repr(transparent)representation hintcontains a zero-sized field that requires non-trivial alignment.
E0692repr(transparent)type was also annotated with other, incompatiblerepresentation hints.
E0693alignrepresentation hint was incorrectly declared.E0695breakstatement without a label appeared inside a labeled block.E0696continuekeyword incorrectly.E0697static.E0698generator can be constructed.
E0699E0700impl Traitreturn type captures lifetime parameters that do notappear within the
impl Traititself.E0701#[non_exhaustive]attribute was incorrectly placedon something other than a struct or enum.
E0703E0704E0705#![feature]attribute was declared for a feature that is stable in thecurrent edition, but not in all editions.
E0706async fns are not yet supported in traits in Rust.E0708asyncnon-moveclosures with parameters are currently not supported.E0710E0711E0712the lifetime of the function.
E0713lifetime of a type that implements the
Droptrait.E0714#[marker]trait contained an associated item.E0715implfor a#[marker]trait tried to override an associated item.E0716E0717E0718#[lang = ".."]attribute was placed on the wrong item type.E0719E0720impl Traittype expands to a recursive type.impl Traittype expands to a recursive type[E0720]#2523E0722optimizeattribute was malformed.E0724#[ffi_returns_twice]was used on something other than a foreign functiondeclaration.
E0725command line flags.
E0726E0727yieldclause was used in anasynccontext.E0728await] has been used outside [async] function or [async] block.E0729E0730E0731repr(transparent)had zero or more thanone variants.
E0732enumwith a discriminant must specify a#[repr(inttype)].E0733async] function used recursion without boxing.E0734E0735Selfon structs, enums, or unions.E0736#[track_caller]and#[naked]cannot both be applied to the same function.E0737#[track_caller]requires functions to have the"Rust"ABI for implicitlyreceiving caller location. See [RFC 2091] for details on this and other
restrictions.
E0739#[track_caller]can not be applied on struct.E0740unionwas declared with fields with destructors.E0741E0742item.
E0743...has been nested inside another type.E0744E0745E0746E0747generic parameters are declared.
E0748#count doesn'tmatch its leading
#count.E0749E0750E0751E0752async.E0753E0754#[no_mangle]should not be applied to non-ASCII items #2548#[no_mangle]should not be applied to non-ASCII items #2552E0755ffi_pureattribute was used on a non-foreign function.E0756ffi_constattribute was used on something other than a foreign functiondeclaration.
E0757ffi_constandffi_pureattributes.E0758E0761E0762E0763E0764E0765") was not terminated.E0766b") was not terminated.E0767E0768E0769struct variant.
E0770E0771E0773E0774derivewas applied on something which is not a struct, a union or an enum.E0775#[cmse_nonsecure_entry]is only valid for targets with the TrustZone-Mextension.
E0776#[cmse_nonsecure_entry]functions require a C ABIE0777#[derive].E0778instruction_setattribute was malformed.E0779instruction_setattribute.E0780doc(inline)with anonymous importsE0781C-cmse-nonsecure-callABI can only be used with function pointers.E0782dynkeyword.E0783...is no longer allowed.E0784E0785implwas written on a dyn auto trait.E0786E0787E0788#[no_coverage]attribute was applied to something which does not show upin code coverage, or is too granular to be excluded from the coverage report.
E0789E0790method.
E0791#[linkage]attribute within external blocksmust have one of the following types, which are equivalent to a nullable
pointer in C:
E0792when used fully generically (and within their defining scope).
This means
E0793E0794Enhancing errors messages:
Internal Compiler Errors:
Refactor Issues:
redefined multiple timesError #2436The text was updated successfully, but these errors were encountered: