When building with clang-15, I get:
CXX libctf_parser_la-parser.lo
parser.cpp:2920:9: error: variable 'yynerrs' set but not used [-Werror,-Wunused-but-set-variable]
int yynerrs;
^
This is because it warns for something like this:
int n;
n = 0;
++n;
whereas previous versions do not.
This is generated code, so there's not much more we can do other than
silence the warning for the file.
Change-Id: If2cffe9042b743ffe4b4b23f751216f67b58e5fa
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/8655
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>
((void) sizeof((void) (_expr1), (void) (_expr2), \
(void) (_expr3), (void) (_expr4), (void) (_expr5), 0))
+#if defined __clang__
+# if __has_warning("-Wunused-but-set-variable")
+# define BT_DIAG_IGNORE_UNUSED_BUT_SET_VARIABLE \
+ _Pragma("GCC diagnostic ignored \"-Wunused-but-set-variable\"")
+# endif
+#endif
+
+#if !defined BT_DIAG_IGNORE_UNUSED_BUT_SET_VARIABLE
+# define BT_DIAG_IGNORE_UNUSED_BUT_SET_VARIABLE
+#endif
+
#ifdef __cplusplus
}
#endif
#include "parser-wrap.hpp"
+/*
+ * Avoid warning about "yynerrs" being unused, seen with bison 3.5.1 + clang 15
+ * on Ubuntu 20.04.
+ */
+BT_DIAG_IGNORE_UNUSED_BUT_SET_VARIABLE
+
/* Join two lists, put "add" at the end of "head". */
static inline void
_bt_list_splice_tail (struct bt_list_head *add, struct bt_list_head *head)