On Fedora 42 with R-devel (r88876) and clang (clang version 21.1.1 (Fedora 21.1.1-1.fc43)) I see:
clang -std=gnu23 -c -o parser.tab.o -O2 -Wall -fPIC -DR_PACKAGE -DNDEBUG -DUSE_TERMCAP -DUSE_READLINE -DCOMPILE_DATE=""Mon Sep 29 19:18:53 UTC 2025"" -DCWB_VERSION="3.4.33" -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-6 -pthread parser.tab.c
parser.tab.c:791:28: warning: unused variable 'yyprhs' [-Wunused-const-variable]
791 | static const yytype_uint16 yyprhs[] =
| ^~~~~~
parser.tab.c:832:27: warning: unused variable 'yyrhs' [-Wunused-const-variable]
832 | static const yytype_int16 yyrhs[] =
| ^~~~~
parser.tab.c:1649:1: warning: unused function 'yy_symbol_print' [-Wunused-function]
1649 | yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
| ^~~~~~~~~~~~~~~
3 warnings generated.
On Fedora 42 with R-devel (r88876) and clang (clang version 21.1.1 (Fedora 21.1.1-1.fc43)) I see:
clang -std=gnu23 -c -o parser.tab.o -O2 -Wall -fPIC -DR_PACKAGE -DNDEBUG -DUSE_TERMCAP -DUSE_READLINE -DCOMPILE_DATE=""Mon Sep 29 19:18:53 UTC 2025"" -DCWB_VERSION="3.4.33" -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-6 -pthread parser.tab.c
parser.tab.c:791:28: warning: unused variable 'yyprhs' [-Wunused-const-variable]
791 | static const yytype_uint16 yyprhs[] =
| ^~~~~~
parser.tab.c:832:27: warning: unused variable 'yyrhs' [-Wunused-const-variable]
832 | static const yytype_int16 yyrhs[] =
| ^~~~~
parser.tab.c:1649:1: warning: unused function 'yy_symbol_print' [-Wunused-function]
1649 | yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
| ^~~~~~~~~~~~~~~
3 warnings generated.