Compiler errors C7500 through C7999
The articles in this section of the documentation explain a subset of the error messages generated by the compiler.
Important
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Note
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Error messages
| Error | Message |
|---|---|
| Compiler error C7500 | '%$I': no function satisfied its constraints |
| Compiler error C7501 | Deprecated '%$S': 'concept' can only applied to a namespace scope function template or variable template |
| Compiler error C7502 | '%$S': the declared return type of a function concept shall be 'bool' |
| Compiler error C7503 | '%$S': a function concept shall have an empty parameter list |
| Compiler error C7504 | '%$S': a function concept shall not be declared with '%$L' |
| Compiler error C7505 | '%$S': a function concept shall not have an exception-specification |
| Compiler error C7506 | '%$S': a function concept shall be defined |
| Compiler error C7507 | '%$S': the declared type of a variable concept shall be 'bool' |
| Compiler error C7508 | unrecognized partition name '%s' in metadata for module '%s' |
| Compiler error C7509 | '%s': malformed module metadata. |
| Compiler error C7510 | 'type-name': use of dependent template/type name must be prefixed with 'template/typename' |
| Compiler error C7511 | '%$I': 'typename' keyword must be followed by a qualified name |
| Compiler error C7512 | '%$L': is not a valid operator for a fold-expression |
| Compiler error C7513 | '%$I': cannot deduce the type of the placeholder |
| Compiler error C7514 | a binary fold expression cannot have an unexpanded parameter pack in both expressions |
| Compiler error C7515 | a fold expression must contain an unexpanded parameter pack |
| Compiler error C7516 | a unary fold expression over '%$L' must have a non-empty expansion |
| Compiler error C7517 | '%$L' in a binary fold expression both operators must be the same |
| Compiler error C7518 | fold expressions require at least '%1$M' |
| Compiler error C7519 | file system error: cannot open '%s' because there are too many open files |
| Compiler error C7520 | file system error: cannot open '%s' because it is inaccessible |
| Compiler error C7521 | file system error: cannot read the content of file '%s' |
| Compiler error C7522 | file system error: cannot determine the content size of file '%s' |
| Compiler error C7523 | file system error: cannot read all the content of file '%s' |
| Compiler error C7524 | 'inline' specifier cannot appear on a block-scope declaration or non-static data member |
| Compiler error C7525 | inline variables require at least '%1$M' |
| Compiler error C7526 | '%$I': inline variable is undefined |
| Compiler error C7527 | '%$I': template parameter name cannot be redeclared |
| Compiler error C7528 | '%1$S': A default constructor or its exception specification cannot be used within a data member initializer of the same class |
| Compiler error C7529 | multiple using-declarators require at least '%1$M' |
| Compiler error C7530 | applying a pack-expansion to a using-declaration requires at least '%1$M' |
| Compiler error C7531 | main function cannot be declared as 'constexpr/consteval' |
| Compiler error C7532 | '%$I': a specialization of variable template cannot have type '%$T' |
| Compiler error C7533 | '%$S': template arguments not allowed in this context |
| Compiler error C7534 | syntax error: '%$L': expected class definition to end with '}' |
| Compiler error C7535 | '%$S': delegating constructor calls itself |
| Compiler error C7536 | ifc failed integrity checks. Expected SHA2: 'hash-value' |
| Compiler error C7537 | failed to properly compute SHA2 hash: '%s' |
| Compiler error C7538 | '%$I' is not a variable template |
| Compiler error C7539 | '%1$I': a class with user-declared constructors cannot have a member with the same name as the class |
| Compiler error C7540 | '%1$I': member cannot have the same name as the enclosing class |
| Compiler error C7541 | '%1$I': C++17 inline static data members are not compatible with managed types |
| Compiler error C7542 | '%1$S': expected a type |
| Compiler error C7543 | likelihood attributes can only be applied to statements and labels |
| Compiler error C7544 | standard attributes '%1$s' and '%2$s' are mutually exclusive |
| Compiler error C7545 | attribute '%sno_unique_address' can only be applied to a non-static data member that is not a bitfield |
| Compiler error C7546 | binary operator '<=>': unsupported operand types '%$T' and '%$T' |
| Compiler error C7547 | standard type '%$S' ill-formed: member '%$I' was not found |
| Compiler error C7548 | Deprecated '%$D': defaulted comparison functions must be declared within the class definition |
| Compiler error C7549 | '%$S': defaulted comparison function cannot be declared to return a comparison category stronger than the common category among bases and members which was deduced to be '%$T' |
| Compiler error C7550 | '%1$S': the qualified name in this context names a constructor, not a type |
| Compiler error C7551 | '%1$pS': template parameter '%2$S': '%3$pS': purely intrinsic functions have no address for use as a non-type template argument |
| Compiler error C7552 | '%1$S': purely intrinsic functions have no address |
| Compiler error C7553 | inline assembler is not supported in a lambda |
| Compiler error C7554 | %1$pS is not an integral constant expression |
| Compiler error C7555 | use of designated initializers requires at least '%1$M' |
| Compiler error C7556 | cannot mix designated-initializers with non-designated-initializers |
| Compiler error C7557 | designated-initializers can only be used in brace-enclosed initializer lists |
| Compiler error C7558 | nested member access is not allowed in standard C++ designated initializers; use a nested initializer list |
| Compiler error C7559 | '%1$I': designator does not name a direct non-static data member of type '%2$T' |
| Compiler error C7560 | '%1$I': designators must appear in member declaration order of class '%2$S' |
| Compiler error C7561 | '%1$I': member designator appears multiple times |
| Compiler error C7562 | '%1$T': designated initialization can only be used to initialize aggregate class types |
| Compiler error C7563 | creating a lambda with a template parameter list requires at least '%1$M' |
| Compiler error C7564 | '%$pS': no non-explicit function available |
| Compiler error C7565 | the template parameter list associated with a lambda cannot be empty |
| Compiler error C7566 | applying a pack-expansion to an init-capture requires at least '%1$M' |
| Compiler error C7567 | '%1$L' is not supported with '/permissive-' |
| Compiler error C7568 | argument list missing after assumed function template '%1$I' |
| Compiler error C7569 | initializer list for union cannot have more than one element |
| Compiler error C7570 | '%1$pS': variable template has already been defined |
| Compiler error C7571 | '%1$pS': variable template has already been initialized |
| Compiler error C7572 | 'using enum %1$S;' requires at least '%2$M' |
| Compiler error C7573 | '%1$S': ill-formed using-declaration; expected a qualified-name or an enumeration |
| Compiler error C7574 | enumeration '%1$pS' is not defined |
| Compiler error C7575 | '%1$S': using enum declaration names a dependent type |
| Compiler error C7576 | declaration of '%1$I' shadows a template parameter |
| Compiler error C7577 | a global module fragment can only appear at the start of a translation unit |
| Compiler error C7578 | unexpected end of file in a global module fragment; expected a module-declaration |
| Compiler error C7579 | the module declaration following a global module fragment cannot be produced by macro expansion or header inclusion |
| Compiler error C7580 | member '%1$pS' for declspec(xfg_reuse_typehash) must be declared with declspec(xfg_virtual) |
| Compiler error C7581 | '%1$S': XFG declspecs can only be applied to global functions, or to data members of pointer-to-function type, with a this-pointer parameter |
| Compiler error C7582 | '%1$I': default member initializers for bit-fields requires at least '%2$M' |
| Compiler error C7583 | an unnamed bit-field cannot have a default member initializer |
| Compiler error C7584 | a for-range-declaration cannot define a class or an enumeration |
| Compiler error C7585 | a range-based for statement with an initializer requires at least '%1$M' |
| Compiler error C7586 | a '%$s' directive must end with a ';' on the same line |
| Compiler error C7587 | '%1$L' cannot appear in an unevaluated context |
| Compiler error C7588 | A definition of a class template %s must be provided for the return type of this coroutine to be deduced |
| Compiler error C7589 | defaulting comparison operators requires at least '%1$M' |
| Compiler error C7590 | a requirement body must contain at least one requirement |
| Compiler error C7591 | bit_cast requires that '%1$T' and '%2%T' have the same size |
| Compiler error C7592 | a non-type template-parameter of type '%1$T' requires at least '%2$M' |
| Compiler error C7593 | a return type requirement shall not be a trailing return type '-> T'. Consider using '-> std::convertible_to<T>' instead |
| Compiler error C7594 | invalid UTF-16 surrogate '0x%x' |
| Compiler error C7595 | '%1$S': call to immediate function is not a constant expression |
| Compiler error C7596 | '%1$S': cannot take address of immediate function outside of an immediate invocation |
| Compiler error C7597 | '%1$D': 'consteval': overriding function must match overridden function |
| Compiler error C7599 | '%1$S': a trailing requires clause is only allowed on a templated function |
| Compiler error C7600 | '%1$S': the concept designated by a type constraint shall be a type concept |
| Compiler error C7601 | the associated constraints are not satisfied |
| Compiler error C7602 | '%1$pS': the associated constraints are not satisfied |
| Compiler error C7603 | '%1$S': concept definition doesn't have constraint expression |
| Compiler error C7604 | '%1$S': 'concept' can only be applied to concept definition at namespace scope |
| Compiler error C7605 | '%1$S': concept shall not have associated constraints |
| Compiler error C7606 | '%1$S': concept cannot be explicitly instantiated, explicitly specialized or partially specialized |
| Compiler error C7607 | atomic constraint should be a constant expression of type 'bool', not '%1$T' |
| Compiler error C7608 | atomic constraint should be a constant expression |
| Compiler error C7609 | '%1$S': type constraint expects a concept name |
| Compiler error C7610 | operator '%$L': not allowed between enumeration types and floating-point types |
| Compiler error C7611 | operator '%$L': not allowed for array types |
| Compiler error C7612 | could not find header unit for '%s' |
| Compiler error C7613 | input '%s' did not evaluate to a header unit |
| Compiler error C7614 | __VA_OPT__ must be followed by a '(' |
| Compiler error C7615 | __VA_OPT__ must be terminated by a ')' |
| Compiler error C7616 | __VA_OPT__ cannot be nested within another __VA_OPT__ |
| Compiler error C7617 | '%$S': A coroutine cannot have a return type containing 'auto' |
| Compiler error C7618 | module partition '%s' cannot be imported prior to declaring the primary module unit or interface |
| Compiler error C7619 | cannot export '%1$S' as module partition '%2s' does not contribute to the exported interface of module unit '%3s' |
| Compiler error C7620 | cannot export module partition '%1s' it is not an interface unit |
| Compiler error C7621 | module partition '%s' for module unit '%s' was not found |
| Compiler error C7622 | module interface file extension is incompatible with '/module:internalPartition' as the partition is not an interface |
| Compiler error C7623 | '%$pS': redefinition; different XFG declspecs |
| Compiler error C7624 | Type name '%1$S' cannot appear on the right side of a class member access expression |
| Compiler error C7625 | The type of a coroutine promise return_value or return_void expression must be void |
| Compiler error C7626 | unnamed class used in typedef name cannot declare members other than non-static data members, member enumerations, or member classes |
| Compiler error C7627 | '%1$T': is not a valid template argument for '%2$S' |
| Compiler error C7628 | '%1$D': cannot be defaulted because it is not declared as a friend of '%2$S' |
| Compiler error C7629 | '%1$D': cannot be defaulted; comparison function was defined as deleted |
| Compiler error C7630 | 'c%s': unsupported C version; using default |
| Compiler error C7631 | '%1$S': variable with internal linkage declared but not defined |
| Compiler error C7632 | '%1$S': a trailing requires clause is not allowed on a virtual function |
| Compiler error C7633 | a parameter in requirement parameter list shall not have a default argument |
| Compiler error C7634 | '%1$T': is not a valid comparison type; consider using '%2$T' instead |
| Compiler error C7635 | a module import declaration cannot appear %$M |
| Compiler error C7636 | '%1$T': invalid expression type for '%2$I'; must be pointer-to-data |
| Compiler error C7637 | %1$T: you cannot implicitly instantiate a class template while it is being defined |
| Compiler error C7638 | /newAlignment argument must be a power of two |
| Compiler error C7639 | /newAlignment requires at least /std:c++17 |
| Compiler error C7640 | unrecognized attribute argument for '%1$s' |
| Compiler error C7641 | missing attribute argument for '%1$s' |
| Compiler error C7642 | unsupported IFC format version %d.%d |
| Compiler error C7643 | '%1$S': '%2$L' specifier cannot appear on a function parameter |
| Compiler error C7644 | destroying operator delete functions must be member functions |
| Compiler error C7645 | first formal parameter of destroying operator delete must be a pointer to the enclosing class type, but was '%$T' |
| Compiler error C7646 | destroying operator delete functions cannot be array delete operators 'operator delete[]' |
| Compiler error C7647 | destroying operator delete functions must be usual deallocation functions |
| Compiler error C7648 | a conversion function cannot have a trailing return type |
| Compiler error C7649 | attribute 'xfg::rename' may only be applied to structs, classes and virtual methods |
| Compiler error C7650 | attribute 'xfg::rename' must be passed a string argument |
| Compiler error C7651 | %1$I cannot be used with /await. Use '%2$M' or later for standard coroutine support |
| Compiler error C7652 | if a member function has a trailing requires clause then another member function with the same signature, ignoring any trailing requires clause, cannot be virtual |
| Compiler error C7653 | '%1$S': failed to select a destructor for the class |
| Compiler error C7654 | a private module fragment can only appear in a primary module interface |
| Compiler error C7655 | a declaration cannot be exported in the purview of a private module fragment |
| Compiler error C7656 | private module fragment cannot be redeclared |
| Compiler error C7657 | private module fragment cannot be declared before a module declaration |
| Compiler error C7658 | '%1$S': the initializer must be the address of a variable |
| Compiler error C7659 | attribute 'xfg::rename' may not be applied to nested class hierarchies |
| Compiler error C7660 | '%s': requires '%s' command line option(s) |
| Compiler error C7661 | header-name '%s' has an ambiguous resolution to header '%s' |
| Compiler error C7662 | '%$S': a coroutine cannot be constexpr or consteval |
| Compiler error C7688 | '#pragma omp atomic': expected an expression of scalar type |
| Compiler error C7686 | TOML parse error |
| Compiler error C7700 | type '%$T' in _Generic association compatible with previous association type '%$T' |
| Compiler error C7701 | default _Generic association previously specified |
| Compiler error C7702 | no compatible type for '%$T' in _Generic association list |
| Compiler error C7703 | inline nested namespaces requires at least '%1$M' |
| Compiler error C7704 | '_Alignas' specifier can be used on variables and structure fields only |
See also
C/C++ Compiler and build tools errors and warnings
Compiler errors C2000 - C3999, C7000 - C7999