10.63 __attribute__((deprecated)) variable attribute

The deprecated variable attribute enables the declaration of a deprecated variable without any warnings or errors being issued by the compiler. However, any access to a deprecated variable creates a warning but still compiles.

The warning gives the location where the variable is used and the location where it is defined. This helps you to determine why a particular definition is deprecated.


This variable attribute is a GNU compiler extension that the ARM compiler supports.


extern int Variable_Attributes_deprecated_0 __attribute__((deprecated));
extern int Variable_Attributes_deprecated_1 __attribute__((deprecated));
void Variable_Attributes_deprecated_2()

Compiling this example generates two warning messages.

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