To: vim_dev@googlegroups.com
Subject: Patch 7.3.767
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------

Patch 7.3.767
Problem:    (Win32) The _errno used for iconv may be the wrong one.
Solution:   Use the _errno from iconv.dll. (Ken Takata)
Files:	    src/mbyte.c


*** ../vim-7.3.766/src/mbyte.c	2012-09-18 18:03:33.000000000 +0200
--- src/mbyte.c	2013-01-17 14:33:42.000000000 +0100
***************
*** 3242,3248 ****
  
  /*
   * Version of strnicmp() that handles multi-byte characters.
!  * Needed for Big5, Sjift-JIS and UTF-8 encoding.  Other DBCS encodings can
   * probably use strnicmp(), because there are no ASCII characters in the
   * second byte.
   * Returns zero if s1 and s2 are equal (ignoring case), the difference between
--- 3242,3248 ----
  
  /*
   * Version of strnicmp() that handles multi-byte characters.
!  * Needed for Big5, Shift-JIS and UTF-8 encoding.  Other DBCS encodings can
   * probably use strnicmp(), because there are no ASCII characters in the
   * second byte.
   * Returns zero if s1 and s2 are equal (ignoring case), the difference between
***************
*** 4294,4299 ****
--- 4294,4337 ----
  #  endif
  
  /*
+  * Get the address of 'funcname' which is imported by 'hInst' DLL.
+  */
+     static void *
+ get_iconv_import_func(HINSTANCE hInst, const char *funcname)
+ {
+     PBYTE			pImage = (PBYTE)hInst;
+     PIMAGE_DOS_HEADER		pDOS = (PIMAGE_DOS_HEADER)hInst;
+     PIMAGE_NT_HEADERS		pPE;
+     PIMAGE_IMPORT_DESCRIPTOR	pImpDesc;
+     PIMAGE_THUNK_DATA		pIAT;	    /* Import Address Table */
+     PIMAGE_THUNK_DATA		pINT;	    /* Import Name Table */
+     PIMAGE_IMPORT_BY_NAME	pImpName;
+ 
+     if (pDOS->e_magic != IMAGE_DOS_SIGNATURE)
+ 	return NULL;
+     pPE = (PIMAGE_NT_HEADERS)(pImage + pDOS->e_lfanew);
+     if (pPE->Signature != IMAGE_NT_SIGNATURE)
+ 	return NULL;
+     pImpDesc = (PIMAGE_IMPORT_DESCRIPTOR)(pImage
+ 	    + pPE->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]
+ 							    .VirtualAddress);
+     for (; pImpDesc->FirstThunk; ++pImpDesc)
+     {
+ 	pIAT = (PIMAGE_THUNK_DATA)(pImage + pImpDesc->FirstThunk);
+ 	pINT = (PIMAGE_THUNK_DATA)(pImage + pImpDesc->OriginalFirstThunk);
+ 	for (; pIAT->u1.Function; ++pIAT, ++pINT)
+ 	{
+ 	    if (IMAGE_SNAP_BY_ORDINAL(pINT->u1.Ordinal))
+ 		continue;
+ 	    pImpName = (PIMAGE_IMPORT_BY_NAME)(pImage + pINT->u1.AddressOfData);
+ 	    if (strcmp(pImpName->Name, funcname) == 0)
+ 		return (void *)pIAT->u1.Function;
+ 	}
+     }
+     return NULL;
+ }
+ 
+ /*
   * Try opening the iconv.dll and return TRUE if iconv() can be used.
   */
      int
***************
*** 4326,4332 ****
      iconv_open	= (void *)GetProcAddress(hIconvDLL, "libiconv_open");
      iconv_close	= (void *)GetProcAddress(hIconvDLL, "libiconv_close");
      iconvctl	= (void *)GetProcAddress(hIconvDLL, "libiconvctl");
!     iconv_errno	= (void *)GetProcAddress(hMsvcrtDLL, "_errno");
      if (iconv == NULL || iconv_open == NULL || iconv_close == NULL
  	    || iconvctl == NULL || iconv_errno == NULL)
      {
--- 4364,4372 ----
      iconv_open	= (void *)GetProcAddress(hIconvDLL, "libiconv_open");
      iconv_close	= (void *)GetProcAddress(hIconvDLL, "libiconv_close");
      iconvctl	= (void *)GetProcAddress(hIconvDLL, "libiconvctl");
!     iconv_errno	= get_iconv_import_func(hIconvDLL, "_errno");
!     if (iconv_errno == NULL)
! 	iconv_errno = (void *)GetProcAddress(hMsvcrtDLL, "_errno");
      if (iconv == NULL || iconv_open == NULL || iconv_close == NULL
  	    || iconvctl == NULL || iconv_errno == NULL)
      {
*** ../vim-7.3.766/src/version.c	2013-01-17 14:09:39.000000000 +0100
--- src/version.c	2013-01-17 14:34:19.000000000 +0100
***************
*** 727,728 ****
--- 727,730 ----
  {   /* Add new patch number below this line */
+ /**/
+     767,
  /**/

-- 
FIRST HEAD:  Oh! quick! get the sword out I want to cut his head off.
THIRD HEAD:  Oh, cut your own head off.
SECOND HEAD: Yes - do us all a favour.
                 "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD

 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\  an exciting new programming language -- http://www.Zimbu.org        ///
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