Use gcc function attributes for better error checking

git-svn-id: svn://svn.cc65.org/cc65/trunk@210 b7a2c559-68d2-44c3-8de9-860c34a00d81

diff --git a/src/common/abend.h b/src/common/abend.h
index ef6f9cc17794e21c666bacb48e632407f3a7c246..9b2df73bd559badc384f23fcaf861e05dab0ba5e 100644 (file)
--- a/src/common/abend.h
+++ b/src/common/abend.h
@@ -38,14 +38,18 @@
 
 
 
+#include "attrib.h"
+
+
+
 /*****************************************************************************/
 /*                                          Code                                    */
 /*****************************************************************************/
 
 
 
-void AbEnd (const char* Format, ...);
-/* Print a message preceeded by the program name and terminate the program 
+void AbEnd (const char* Format, ...) attribute ((format (printf, 1, 2)));
+/* Print a message preceeded by the program name and terminate the program
  * with an error exit code.
  */
 

diff --git a/src/common/attrib.h b/src/common/attrib.h
new file mode 100644 (file)
index 0000000..7ff01a6
--- /dev/null
+++ b/src/common/attrib.h
@@ -0,0 +1,60 @@
+/*****************************************************************************/
+/*                                                                           */
+/*                               typeattr.h                                 */
+/*                                                                           */
+/*                          Handle gcc attributes                           */
+/*                                                                           */
+/*                                                                           */
+/*                                                                           */
+/* (C) 2000     Ullrich von Bassewitz                                        */
+/*              Wacholderweg 14                                              */
+/*              D-70597 Stuttgart                                            */
+/* EMail:       uz@musoftware.de                                             */
+/*                                                                           */
+/*                                                                           */
+/* This software is provided 'as-is', without any expressed or implied       */
+/* warranty.  In no event will the authors be held liable for any damages    */
+/* arising from the use of this software.                                    */
+/*                                                                           */
+/* Permission is granted to anyone to use this software for any purpose,     */
+/* including commercial applications, and to alter it and redistribute it    */
+/* freely, subject to the following restrictions:                            */
+/*                                                                           */
+/* 1. The origin of this software must not be misrepresented; you must not   */
+/*    claim that you wrote the original software. If you use this software   */
+/*    in a product, an acknowledgment in the product documentation would be  */
+/*    appreciated but is not required.                                       */
+/* 2. Altered source versions must be plainly marked as such, and must not   */
+/*    be misrepresented as being the original software.                      */
+/* 3. This notice may not be removed or altered from any source              */
+/*    distribution.                                                          */
+/*                                                                           */
+/*****************************************************************************/
+
+
+
+#ifndef ATTRIB_H
+#define ATTRIB_H
+
+
+
+/*****************************************************************************/
+/*                                          Code                                    */
+/*****************************************************************************/
+
+
+
+#if defined(__GNUC__)
+#  define attribute(a) __attribute__(a)
+#else
+#  define attribute(a) 
+#endif
+
+
+
+/* End of attrib.h */
+
+#endif
+
+
+

diff --git a/src/common/xsprintf.h b/src/common/xsprintf.h
index 4edfa0f69494b779b8e7cc955670b7a426e034bb..77e0ea04efee5c308355c3ce7cfeae4525d36915 100644 (file)
--- a/src/common/xsprintf.h
+++ b/src/common/xsprintf.h
@@ -40,6 +40,8 @@
 
 #include <stdarg.h>
 
+#include "attrib.h"
+
 
 
 /*****************************************************************************/
@@ -48,7 +50,8 @@
 
 
 
-int xsprintf (char* Buf, size_t BufSize, const char* Format, ...);
+int xsprintf (char* Buf, size_t BufSize, const char* Format, ...)
+       attribute ((format (printf, 3, 4)));
 /* Replacement function for sprintf */
 
 int xvsprintf (char* Buf, size_t BufSize, const char* Format, va_list ap);