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4. C Implementation-defined behavior

A conforming implementation of ISO C is required to document its choice of behavior in each of the areas that are designated "implementation defined." The following lists all such areas, along with the section number from the ISO/IEC 9899:1999 standard.

4.1 Translation  
4.2 Environment  
4.3 Identifiers  
4.4 Characters  
4.5 Integers  
4.6 Floating point  
4.7 Arrays and pointers  
4.8 Hints  
4.9 Structures, unions, enumerations, and bit-fields  
4.10 Qualifiers  
4.11 Preprocessing directives  
4.12 Library functions  
4.13 Architecture  
4.14 Locale-specific behavior  


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4.1 Translation


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4.2 Environment

The behavior of these points are dependent on the implementation of the C library, and are not defined by GCC itself.


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4.3 Identifiers


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4.4 Characters


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4.5 Integers


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4.6 Floating point


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4.7 Arrays and pointers


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4.8 Hints


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4.9 Structures, unions, enumerations, and bit-fields


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4.10 Qualifiers


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4.11 Preprocessing directives


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4.12 Library functions

The behavior of these points are dependent on the implementation of the C library, and are not defined by GCC itself.


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4.13 Architecture


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4.14 Locale-specific behavior

The behavior of these points are dependent on the implementation of the C library, and are not defined by GCC itself.


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