maint: add _Noreturn attribute to two functions

This avoids two gcc may-be-noreturn warnings:
* sed/sed.h (bad_prog): Add _Noreturn attribute.
* sed/utils.h (panic): Likewise.

2 files changed, 2 insertions, 2 deletions

diff --git a/sed/sed.h b/sed/sed.h
index d190700..c3700b0 100644
--- a/sed/sed.h
+++ b/sed/sed.h
@@ -181,7 +181,7 @@ struct sed_cmd {
 
 
 
-void bad_prog (const char *why);
+_Noreturn void bad_prog (const char *why);
 size_t normalize_text (char *text, size_t len, enum text_types buftype);
 struct vector *compile_string (struct vector *, char *str, size_t len);
 struct vector *compile_file (struct vector *, const char *cmdfile);
diff --git a/sed/utils.h b/sed/utils.h
index bf0981c..9387369 100644
--- a/sed/utils.h
+++ b/sed/utils.h
@@ -20,7 +20,7 @@
 
 #include "basicdefs.h"
 
-void panic (const char *str, ...);
+_Noreturn void panic (const char *str, ...);
 
 FILE *ck_fopen (const char *name, const char *mode, int fail);
 FILE *ck_fdopen (int fd, const char *name, const char *mode, int fail);