[sql] Import SQLite 3.17.0.

third_party/sqlite/src/src/mem1.c

 /*
 ** 2007 August 14
 **
 ** The author disclaims copyright to this source code.  In place of
 ** a legal notice, here is a blessing:
 **
 **    May you do good and not evil.
 **    May you find forgiveness for yourself and forgive others.
 **    May you share freely, never taking more than you give.
 **
@@ skipping 107 matching lines @@
 /*
 ** Like malloc(), but remember the size of the allocation
 ** so that we can find it later using sqlite3MemSize().
 **
 ** For this low-level routine, we are guaranteed that nByte>0 because
 ** cases of nByte<=0 will be intercepted and dealt with by higher level
 ** routines.
 */
 static void *sqlite3MemMalloc(int nByte){
 #ifdef SQLITE_MALLOCSIZE
-  void *p = SQLITE_MALLOC( nByte );
+  void *p;
+  testcase( ROUND8(nByte)==nByte );
+  p = SQLITE_MALLOC( nByte );
   if( p==0 ){
     testcase( sqlite3GlobalConfig.xLog!=0 );
     sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes of memory", nByte);
   }
   return p;
 #else
   sqlite3_int64 *p;
   assert( nByte>0 );
-  nByte = ROUND8(nByte);
+  testcase( ROUND8(nByte)!=nByte );
   p = SQLITE_MALLOC( nByte+8 );
   if( p ){
     p[0] = nByte;
     p++;
   }else{
     testcase( sqlite3GlobalConfig.xLog!=0 );
     sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes of memory", nByte);
   }
   return (void *)p;
 #endif
@@ skipping 139 matching lines @@
      sqlite3MemSize,
      sqlite3MemRoundup,
      sqlite3MemInit,
      sqlite3MemShutdown,
      0
   };
   sqlite3_config(SQLITE_CONFIG_MALLOC, &defaultMethods);
 }
 
 #endif /* SQLITE_SYSTEM_MALLOC */