sh: Add a function to print warnings (with command name and newline).

This is like error() but without raising an exception.
It is particularly useful as a replacement for the warnx macro in
bltin/bltin.h.

1 files changed, 1 insertions, 0 deletions

diff --git a/bin/sh/error.h b/bin/sh/error.h
index 8b64fe6..bf11c67 100644
--- a/bin/sh/error.h
+++ b/bin/sh/error.h
@@ -80,6 +80,7 @@ extern volatile sig_atomic_t intpending;
 
 void exraise(int) __dead2;
 void onint(void);
+void warning(const char *, ...) __printflike(1, 2);
 void error(const char *, ...) __printf0like(1, 2) __dead2;
 void exerror(int, const char *, ...) __printf0like(2, 3) __dead2;