[Bug algol68/122964] Algol68 sets DWARF DW_AT_language_version to zero

[mark at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122964

--- Comment #2 from Mark Wielaard <mark at gcc dot gnu.org> ---
Please do define what Algol68 standard versions there are.
And how to interpret "zero" (if you keep emitting that).

This is helpful for elfutils libdw dwarf_language:

/* Provides the DW_LNAME source language and version of the given CU
   DIE.  LVERSION may be NULL. Returns zero on success.  */
extern int dwarf_language (Dwarf_Die *cudie,
                           Dwarf_Word *lname,
                           Dwarf_Word *lversion) __nonnull_attribute__ (2);

This function also works if the cudie only has an DW_AT_language code,
which will be translated into a lname and lversion pair. Currently it
returns DW_LNAME_Algol68 and 0 for DW_LANG_Algol68. It would be good to
know if the lversion really should be 1968 instead.

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