Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-09 20:33:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

yacc.c, lalr1.cc: fix warnings about yynerrs

Browse Source 
Most often yynerrs is not used.  Clang 15 now complains about such
variables.  Bison itself does not compile:

```
src/parse-gram.c:1797:9: error: variable 'gram_nerrs' set but not used [-Werror,-Wunused-but-set-variable]
    int yynerrs = 0;
        ^
src/parse-gram.c:79:25: note: expanded from macro 'yynerrs'
                        ^
1 error generated.
```

Reported by Nikita Popov.
Fixes https://github.com/akimd/bison/issues/89.

* data/skeletons/yacc.c (yynerrs): Flag with YY_ATTRIBUTE_UNUSED.
* data/skeletons/lalr1.cc (yynerrs_): Likewise.
This commit is contained in:
Akim Demaille
2022-08-02 08:45:25 +02:00
parent b7bdf78c18
commit a166d5450e
3 changed files with 5 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
data/skeletons/yacc.c
View File

@@ -256,7 +256,7 @@ int yynerrs;]])])
m4_define([b4_declare_parser_state_variables],
[b4_pure_if([[
/* Number of syntax errors so far. */
int yynerrs]m4_ifval([$1], [ = 0])[;
int yynerrs YY_ATTRIBUTE_UNUSED]m4_ifval([$1], [ = 0])[;
]])[
yy_state_fast_t yystate]m4_ifval([$1], [ = 0])[;
/* Number of tokens to shift before error messages enabled. */