Add compile-time checks on expanding-string function use

[exim.git] / src / src / functions.h

diff --git a/src/src/functions.h b/src/src/functions.h
index 963f48ed41fb1f1adba7cefe38b34f4d486e4f61..34f6434d0c1a28fc28c544dc5a4ebf498c8fc5e3 100644 (file)
--- a/src/src/functions.h
+++ b/src/src/functions.h
@@ -14,7 +14,7 @@ are in in fact in separate headers. */
 
 #ifdef EXIM_PERL
 extern uschar *call_perl_cat(uschar *, int *, int *, uschar **, uschar *,
-                 uschar **);
+                 uschar **) WARN_UNUSED_RESULT;
 extern void    cleanup_perl(void);
 extern uschar *init_perl(uschar *);
 #endif
@@ -51,6 +51,7 @@ extern int     tls_client_start(int, host_item *, address_item *,
 # endif
                uschar **);
 extern void    tls_close(BOOL, BOOL);
+extern BOOL    tls_could_read(void);
 extern int     tls_export_cert(uschar *, size_t, void *);
 extern int     tls_feof(void);
 extern int     tls_ferror(void);
@@ -63,7 +64,7 @@ extern int     tls_read(BOOL, uschar *, size_t);
 extern int     tls_server_start(const uschar *, uschar **);
 extern BOOL    tls_smtp_buffered(void);
 extern int     tls_ungetc(int);
-extern int     tls_write(BOOL, const uschar *, size_t);
+extern int     tls_write(BOOL, const uschar *, size_t, BOOL);
 extern uschar *tls_validate_require_cipher(void);
 extern void    tls_version_report(FILE *);
 # ifndef USE_GNUTLS
@@ -438,12 +439,12 @@ extern int     stdin_getc(unsigned);
 extern int     stdin_feof(void);
 extern int     stdin_ferror(void);
 extern int     stdin_ungetc(int);
-extern uschar *string_append(uschar *, int *, int *, int, ...);
+extern uschar *string_append(uschar *, int *, int *, int, ...) WARN_UNUSED_RESULT;
 extern uschar *string_append_listele(uschar *, uschar, const uschar *);
 extern uschar *string_append_listele_n(uschar *, uschar, const uschar *, unsigned);
 extern uschar *string_base62(unsigned long int);
-extern uschar *string_cat(uschar *, int *, int *, const uschar *);
-extern uschar *string_catn(uschar *, int *, int *, const uschar *, int);
+extern uschar *string_cat(uschar *, int *, int *, const uschar *) WARN_UNUSED_RESULT;
+extern uschar *string_catn(uschar *, int *, int *, const uschar *, int) WARN_UNUSED_RESULT;
 extern int     string_compare_by_pointer(const void *, const void *);
 extern uschar *string_copy_dnsdomain(uschar *);
 extern uschar *string_copy_malloc(const uschar *);