Incorrect information about Embedded C

Description

The Embedded Design Handbook contains the following incorrect statement about C support:

The HAL supports only the standard Embedded C subset of the full C language. C programs that use features beyond this subset fail in the HAL environment. C features not available in Embedded C include polymorphism, templates, and single and multiple object inheritance. In general, features that consume a large amount of memory are not included in Embedded C . Catch/throw exceptions fail in the MicroC/OS-II environment.

Nios II C support is not restricted to the obsolete Embedded C specification.

Resolution

In place of the incorrect paragraph, refer to the following correct information:

Nios II C language support depends on the GCC tool chain. The Nios II GCC 4 C tool chain supports the following features:

• Polymorphism
• Friendship and inheritance
• Multiple inheritance
• Virtual base classes
• Run-time type information (typeid)
• The mutable type qualifier
• Namespaces
• Templates
• New-and-delete style dynamic memory allocation
• Operator overloading
• Standard Template Library (STL)

Exceptions and new-style dynamic casts are not supported.