to guarantee their validity until
the call to this function returns.</p>

<p>options A bitset of options composed of the flags in Clangc::Reparse_Flags.
The function Clangc::TranslationUnit.defaultReparseOptions() produces a
default set of options recommended for most uses, based on the translation
unit.</p>

<p>returns 0 if the sources could be reparsed.  A non-zero error code will be
returned if reparsing was impossible, such that the translation unit is
invalid. The error codes returned by this routine a