1 files changed, 3 insertions, 0 deletions
diff --git a/cache.h b/cache.h
index 8ceb6b8e8d..e1df1e40dd 100644
--- a/cache.h
+++ b/cache.h
@@ -1145,6 +1145,9 @@ extern int check_repository_format_version(const char *var, const char *value, v
 extern int git_env_bool(const char *, int);
 extern int git_config_system(void);
 extern int config_error_nonbool(const char *);
+#ifdef __GNUC__
+#define config_error_nonbool(s) (config_error_nonbool(s), -1)
+#endif
 extern const char *get_log_output_encoding(void);
 extern const char *get_commit_output_encoding(void);