15.4 Identifiers

Describes implementation-defined aspects of the ARM C compiler and C library relating to identifiers, as required by the ISO C standard.

The following point applies to the identifiers expected by the compiler:
  • Uppercase and lowercase characters are distinct in all internal and external identifiers. An identifier can also contain a dollar ($) character unless the --strict compiler option is specified. To permit dollar signs in identifiers with the --strict option, also use the --dollar command-line option.
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