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CppCompileError.md
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CppCompileError.md
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# ([C++](Cpp.md)) [Compile error](CppCompileError.md)
[](https://xkcd.com/371/)
[Error](CppError.md) emitted by the [compiler](CppCompiler.md), that
prevents program execution. A [compile warning](CppCompileWarning.md)
starts program execution anyway.
1.  [::swprintf has not been declared](CppCompileErrorSwprintfHasNotBeenDeclared.md)
2.  [\_algo.c: Call to undefined function 'rand'](CppCompileError_algoCcallToUndefinedFunctionRand.md)
3.  [\_algo.c: Cannot modify a const object](CppCompileError_algoCcannotModifyAconstObject.md)
4.  [\_algobase.h: Cannot convert 'const int' to 'MyClass \*'](CppCompileError_algobaseHcannotConvertConstIntToMyClassPtr.md)
5.  [\_popen is not a member of std](CppCompileError_popenIsNotAmemberOfStd.md)
6.  ['assert' was not declared in this scope](CppCompileErrorAssertWasNotDeclaredInThisScope.md)
7.  [base class 'struct QtPrivate::AlignOf\_WorkaroundForI386Abi<double>' has a non-virtual destructor](CppCompileErrorBaseClassStructQtPrivateAlignOf_WorkaroundForI386AbiDoubleHasANonVirtualDestructor.md)
8.  [boost/filesystem.hpp: No such file or directory](CppCompileErrorBoostFilesystemHppNoSuchFileOrDirectory.md)
9.  [borland.hpp: Only member functions may be 'const' or 'volatile'](CppCompileErrorBorlandHppOnlyMemberFunctionsMayBeConstOrVolatile.md)
10.  [bzconfig.h: Unknown compiler](CppCompileErrorBzconfigHunknownCompiler.md)
11.  [cc1plus: internal compiler error: Segmentation fault](CppCompileErrorCc1plusInternalCompilerErrorSegmentationFault.md)
12.  [CLK\_TCK was not declared in this scope](CppCompileErrorCLK_TCKwasNotDeclaredInThisScope.md)
13.  ['consoleInitDefault' was not declared in this scope](CppCompileErrorConsoleInitDefaultNotDeclared.md)
14.  ['Container::value\_type' is not a type](CppCompileErrorContainerValue_typeIsNotAtype.md)
15.  ['cout' is not a member of 'std'](CppCompileErrorCoutIsNotAmemberOfStd.md)
16.  [duplicate symbol](CppCompileErrorDuplicateSymbol.md)
17.  [enable\_if\_does\_not\_work\_on\_this\_compiler<void>](CppCompileErrorEnable_if_does_not_work_on_this_compilerVoid.md)
18.  ['endl' is not a member of 'std'](CppCompileErrorEndlIsNotAmemberOfStd.md)
19.  [iterator.hpp: Invalid template argument list](CppCompileErrorIteratorHppInvalidTemplateArgumentList.md)
20.  [jconfig.h: No such file or directory](CppCompileErrorJconfigHnoSuchFileOrDirectory.md)
21.  [jpeglib.h: No such file or directory](CppCompileErrorJpeglibHnoSuchFileOrDirectory.md)
22.  ['jpeg\_read\_image' was not declared in this scope](CppCompileErrorJpeg_read_imageWasNotDeclaredInThisScope.md)
23.  [Multithreaded RTL must be selected](CppCompileErrorMultithreadedRtlMustBeSelected.md)
24.  ['MyPolicy::MyMethod' is not a direct base class of 'MyClass<MyPolicy>'](CppCompileErrorMyPolicyMyMethodIsNotAdirectBaseClassOfMyClassMyPolicy.md)
25.  [No matching function for call to 'ptr\_fun'](CppCompileErrorNoMatchingFunctionForCallToPtr_fun.md)
26.  [Only member functions may be 'const' or 'volatile'](CppCompileErrorOnlyMemberFunctionsMayBeConstOrVolatile.md)
27.  [openssl/conf.h: No such file or directory](CppCompileErrorOpensslConfHNoSuchFileOrDirectory.md)
28.  ['operator+' not implemented in type 'std::map<int,double>' for arguments of type 'int'](CppCompileErrorOperatorPlusNotImplementedInTypeMapIntDoubleForArgumentsOfTypeInt.md)
29.  [QCanvas: No such file or directory](CppCompileErrorQCanvasNoSuchFileOrDirectory.md)
30.  [Request for member 'mX' in 'w', which is of non-class type 'Widget()'](CppCompileErrorErrorRequestForMemberWhichIsOfNonClassType.md)
31.  [shared\_ptr.hpp: Call to undefined function 'assert'](CppCompileErrorShared_ptrCallToUndefinedFunctionAssert.md)
32.  [shared\_ptr.hpp: Cannot convert 'Y \*' to 'Widget \*'](CppCompileErrorShared_ptrHppCannotConvertYptrToWidgetPtr.md)
33.  [Size of @\_STL@%vector%78\_STL@... is unknown or zero](CppCompileErrorSizeOfVector.md)
34.  [stdio.h:430: error: expected initializer before 'throw'](CppCompileErrorStdioHexpectedInitializerBeforeThrow.md)
35.  ['SUB\_BG0\_CR' was not declared in this scope](CppCompileErrorSUB_BG0_CRnotDeclared.md)
36.  [tuple\_basic.hpp: Multiple declaration for 'element<N,T>'](CppCompileErrorTuple_basicHppMultipleDeclarationForElementNT.md)
37.  [Undefined reference to '\[anything\]'](CppLinkError.md)
38.  [UnicodeQt4.h:197: error: call of overloaded 'toLower(UChar32&)' is ambiguous](CppCompileErrorUnicodeQt4H197Error.md)
39.  [utilities.hpp: Invalid template argument list](CppCompileErrorUtilitiesHppInvalidTemplateArgumentList.md)
40.  [Your compiler and/or configuration is unsupported by this verions of uBLAS](CppCompileErrorYourCompilerAndOrConfigurationIsUnsupportedByThisVerionsOfUblas.md)
41.  [wchar.h:718: error: expected initializer before 'throw'](CppCompileErrorWcharHexpectedInitializerBeforeThrow.md)
##  How to let [compile warnings](CppCompileWarning.md) be treated like [compile errors](CppCompileError.md) in [Qt Creator](CppQtCreator.md)?
In the [project file](CppQtProjectFile.md), add the following line:
```
QMAKE_CXXFLAGS += -Werror
```
## [Advice](CppAdvice.md)
* Compile cleanly at high warning levels [1,3]
* Prefer [compile errors](CppCompileError.md) to [runtime errors](CppRuntimeError.md) [2,4]
# [References](CppReferences.md)
* [1] [Herb Sutter](CppHerbSutter.md), [Andrei Alexandrescu](CppAndreiAlexandrescu.md). C++ coding standards: 101 rules, guidelines, and best practices. ISBN: 0-32-111358-6. Item 1: 'Compile cleanly at high warning levels'.
* [2] [Herb Sutter](CppHerbSutter.md), [Andrei Alexandrescu](CppAndreiAlexandrescu.md). C++ coding standards: 101 rules, guidelines, and best practices. ISBN: 0-32-111358-6. Item 14: 'Prefer compile- and link-time errors to run-time errors'.
* [3] [Linus Torvalds](LinusTorvalds.md). [Re:[PATCH] Don't compare unsigned variable for <0 in sys\_prctl()](http://linux.derkeiler.com/Mailing-Lists/Kernel/2006-11/msg08325.html). 2006-11-28. Retrieved on 2010-09-20. 'Friends don't let friends use [gcc] "-W"'
* [4] [C++ Core Guidelines: P.5: Prefer compile-time checking to run-time checking](https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#p5-prefer-compile-time-checking-to-run-time-checking)