Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-09 12:23:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

code: be robust to reference with invalid tags

Browse Source 
Because we want to support $<a->b>$, we must accept -> in type tags,
and reject $<->$, as it is unfinished.
Reported by Ahcheong Lee.

* src/scan-code.l (yylex): Make sure "tag" does not end with -, since
-> does not close the tag.
* tests/input.at (Stray $ or @): Check this.
This commit is contained in:
Akim Demaille
2020-03-06 09:05:52 +01:00
parent 192e9fdf77
commit 641e326303
3 changed files with 7 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
tests/input.at
View File

@@ -2548,7 +2548,9 @@ AT_DATA_GRAMMAR([[input.y]],
%printer { $%; @%; } <*> exp TOK;
%{ $ @ %} // Should not warn.
%%
exp: TOK { $%; @%; $$ = $1; };
exp: TOK { $%; @%; $$ = $1; }
| 'a' { $<->1; $$ = 1; }
| 'b' { $<foo->bar>$; }
%%
$ @ // Should not warn.
]])
@@ -2562,6 +2564,7 @@ input.y:13.19: warning: stray '$' [-Wother]
input.y:13.23: warning: stray '@' [-Wother]
input.y:16.19: warning: stray '$' [-Wother]
input.y:16.23: warning: stray '@' [-Wother]
input.y:17.19: warning: stray '$' [-Wother]
]])
AT_BISON_OPTION_POPDEFS