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Overview
Comment:On windows systems when rand_s() is available, use it to obtain additional seed material in winRandomness().
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SHA1: 139081bef9f63c3ebbe9e992408597b1349bdf37
User & Date: drh 2016-02-15 21:31:51.875
References
2017-09-12
23:58
Remove use of the rand_s() function (added by [139081bef9f63c3e]) as it appears to cause issues with some third-party DLLs. (check-in: 3a2793aa65 user: mistachkin tags: trunk)
Context
2016-02-15
22:01
Revise compiler checks for the rand_s() function. (check-in: 287f508dd6 user: mistachkin tags: trunk)
21:31
On windows systems when rand_s() is available, use it to obtain additional seed material in winRandomness(). (check-in: 139081bef9 user: drh tags: trunk)
20:41
Improved entropy gathering for the implementation of winRandomness(). (check-in: fea3705e77 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/msvc.h.
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**
** This file contains code that is specific to MSVC.
*/
#ifndef _MSVC_H_
#define _MSVC_H_

#if defined(_MSC_VER)

#pragma warning(disable : 4054)
#pragma warning(disable : 4055)
#pragma warning(disable : 4100)
#pragma warning(disable : 4127)
#pragma warning(disable : 4130)
#pragma warning(disable : 4152)
#pragma warning(disable : 4189)








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**
** This file contains code that is specific to MSVC.
*/
#ifndef _MSVC_H_
#define _MSVC_H_

#if defined(_MSC_VER)
#define _CRT_RAND_S  /* Make rand_s() available on windows systems */
#pragma warning(disable : 4054)
#pragma warning(disable : 4055)
#pragma warning(disable : 4100)
#pragma warning(disable : 4127)
#pragma warning(disable : 4130)
#pragma warning(disable : 4152)
#pragma warning(disable : 4189)
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Changes to src/os_win.c.
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  UNUSED_PARAMETER(pVfs);
  memset(zBuf, 0, nBuf);
  return nBuf;
#else
  EntropyGatherer e;
  UNUSED_PARAMETER(pVfs);
  memset(zBuf, 0, nBuf);



  e.a = (unsigned char*)zBuf;
  e.na = nBuf;
  e.nXor = 0;
  e.i = 0;
  {
    SYSTEMTIME x;
    osGetSystemTime(&x);








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  UNUSED_PARAMETER(pVfs);
  memset(zBuf, 0, nBuf);
  return nBuf;
#else
  EntropyGatherer e;
  UNUSED_PARAMETER(pVfs);
  memset(zBuf, 0, nBuf);
#ifdef _MSC_VER
  rand_s((int*)zBuf);  /* rand_s() is not available with MinGW */
#endif
  e.a = (unsigned char*)zBuf;
  e.na = nBuf;
  e.nXor = 0;
  e.i = 0;
  {
    SYSTEMTIME x;
    osGetSystemTime(&x);
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