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yacc.c: fix broken union when api.value.type=union and %defines are used

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Reported by Rich Wilson.

* data/c.m4 (b4_symbol_type_register): Append to b4_union_members,
not b4_user_union_members.
The latter invokes the former, but it is the former which is reinitialized
to empty by b4_value_type_setup_union.
* tests/types.at: Check it.

This reveals another bug, this time in the case of glr.c parsers.

* data/glr.c: Generate the header file before the implementation file,
to be sure that the setup is run before what depends on it.
This commit is contained in:
Akim Demaille
2014-12-31 14:15:06 +01:00
parent a3c3c6f242
commit 8d4dc896cb
5 changed files with 70 additions and 23 deletions
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8
data/c.m4
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@@ -560,15 +560,15 @@ b4_locations_if([, yylocationp])[]b4_user_args[);
# b4_symbol_type_register(SYMBOL-NUM)
# -----------------------------------
# Symbol SYMBOL-NUM has a type (for variant) instead of a type-tag.
# Extend the definition of %union's body with a field of that type,
# and extend the symbol's "type" field to point to the field name,
# instead of the type name.
# Extend the definition of %union's body (b4_union_members) with a
# field of that type, and extend the symbol's "type" field to point to
# the field name, instead of the type name.
m4_define([b4_symbol_type_register],
[m4_define([b4_symbol($1, type_tag)],
[b4_symbol_if([$1], [has_id],
[b4_symbol([$1], [id])],
[yytype_[]b4_symbol([$1], [number])])])dnl
m4_append([b4_user_union_members],
m4_append([b4_union_members],
m4_expand([
b4_symbol_tag_comment([$1])dnl
b4_symbol([$1], [type]) b4_symbol([$1], [type_tag]);]))