From 218e722b91ddcae40cf17456ddfc1994d6964868 Mon Sep 17 00:00:00 2001
From: cuz <cuz@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Sat, 18 Dec 2004 14:28:42 +0000
Subject: [PATCH] Fixes for the Watcom compiler and some general improvements
 for older compilers that don't have the va_copy macro.

git-svn-id: svn://svn.cc65.org/cc65/trunk@3338 b7a2c559-68d2-44c3-8de9-860c34a00d81
---
 src/common/strbuf.c   |  1 +
 src/common/va_copy.h  | 54 +++++++++++++++++++++++++++++++++++++++++++
 src/common/xsprintf.c | 14 ++++++++---
 3 files changed, 66 insertions(+), 3 deletions(-)
 create mode 100644 src/common/va_copy.h

diff --git a/src/common/strbuf.c b/src/common/strbuf.c
index 6d1e26285..369716c3f 100644
--- a/src/common/strbuf.c
+++ b/src/common/strbuf.c
@@ -37,6 +37,7 @@
 
 /* common */
 #include "strbuf.h"
+#include "va_copy.h"
 #include "xmalloc.h"
 #include "xsprintf.h"
 
diff --git a/src/common/va_copy.h b/src/common/va_copy.h
new file mode 100644
index 000000000..d2be4ebc0
--- /dev/null
+++ b/src/common/va_copy.h
@@ -0,0 +1,54 @@
+/*****************************************************************************/
+/*                                                                           */
+/*                                 va_copy.h                                 */
+/*                                                                           */
+/*               va_copy macro for systems that don't have it                */
+/*                                                                           */
+/*                                                                           */
+/*                                                                           */
+/* (C) 2004      Ullrich von Bassewitz                                       */
+/*               Römerstrasse 52                                             */
+/*               D-70794 Filderstadt                                         */
+/* EMail:        uz@cc65.org                                                 */
+/*                                                                           */
+/*                                                                           */
+/* 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 VA_COPY_H
+#define VA_COPY_H
+
+
+
+/* The watcom compiler doesn't have va_copy and a problematic va_list definition */
+#if defined(__WATCOMC__)
+
+#define va_copy(src,dest)       memcpy((src), (dest), sizeof (va_list))
+
+#endif
+
+
+
+/* End of va_copy.h */
+#endif
+
+
+
diff --git a/src/common/xsprintf.c b/src/common/xsprintf.c
index da4bcaa64..307d16e18 100644
--- a/src/common/xsprintf.c
+++ b/src/common/xsprintf.c
@@ -42,6 +42,7 @@
 #include "chartype.h"
 #include "check.h"
 #include "inttypes.h"
+#include "va_copy.h"
 #include "xsprintf.h"
 
 
@@ -154,7 +155,9 @@ static intmax_t NextIVal (PrintfCtrl*P)
         case lmIntMax:      return va_arg (P->ap, intmax_t);
         case lmSizeT:       return (uintmax_t) va_arg (P->ap, size_t);
         case lmPtrDiffT:    return (long) va_arg (P->ap, ptrdiff_t);
-        default:            FAIL ("Invalid type size in NextIVal");
+        default:
+            FAIL ("Invalid type size in NextIVal");
+            return 0;
     }
 }
 
@@ -171,7 +174,9 @@ static uintmax_t NextUVal (PrintfCtrl*P)
         case lmIntMax:      return va_arg (P->ap, uintmax_t);
         case lmSizeT:       return va_arg (P->ap, size_t);
         case lmPtrDiffT:    return (intmax_t) va_arg (P->ap, ptrdiff_t);
-        default:            FAIL ("Invalid type size in NextUVal");
+        default:
+            FAIL ("Invalid type size in NextUVal");
+            return 0;
     }
 }
 
@@ -372,7 +377,7 @@ int xvsnprintf (char* Buf, size_t Size, const char* Format, va_list ap)
 
 
     /* Initialize the control structure */
-    P.ap        = ap;
+    va_copy (P.ap, ap);
     P.Buf       = Buf;
     P.BufSize   = Size;
     P.BufFill   = 0;
@@ -584,6 +589,9 @@ int xvsnprintf (char* Buf, size_t Size, const char* Format, va_list ap)
         }
     }
 
+    /* We don't need P.ap any longer */
+    va_end (P.ap);
+
     /* Terminate the output string and return the number of chars that had
      * been written if the buffer was large enough.
      * Beware: The terminating zero is not counted for the function result!
-- 
2.39.5