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-rw-r--r--extra/scripts/unifdef.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/extra/scripts/unifdef.h b/extra/scripts/unifdef.h
index d57a8660b..276015c82 100644
--- a/extra/scripts/unifdef.h
+++ b/extra/scripts/unifdef.h
@@ -37,6 +37,7 @@
/* Avoid err.h since this are non-standard BSD extensions */
#define vwarnx(fmt, args) ({ fprintf(stderr, "unifdef: "); vfprintf(stderr, fmt, args); fprintf(stderr, "\n"); })
#define warnx(fmt, args...) fprintf(stderr, "unifdef: " fmt "\n", ## args)
+#define warn(fmt, args...) warnx(fmt ": %s", ## args, strerror(errno))
#define errx(exit_code, fmt, args...) ({ warnx(fmt, ## args); exit(exit_code); })
#define err(exit_code, fmt, args...) errx(exit_code, fmt ": %s", ## args, strerror(errno))