[sql] Import SQLite 3.17.0.

third_party/sqlite/src/ext/fts5/fts5_unicode2.c

 /*
 ** 2012 May 25
 **
 ** 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 @@
     0x07CC0021, 0x07CCC006, 0x07CCDC46, 0x07CE0014, 0x07CE8025,
     0x07CF1805, 0x07CF8011, 0x07D0003F, 0x07D10001, 0x07D108B6,
     0x07D3E404, 0x07D4003E, 0x07D50004, 0x07D54018, 0x07D7EC46,
     0x07D9140B, 0x07DA0046, 0x07DC0074, 0x38000401, 0x38008060,
     0x380400F0,
   };
   static const unsigned int aAscii[4] = {
     0xFFFFFFFF, 0xFC00FFFF, 0xF8000001, 0xF8000001,
   };
 
-  if( c<128 ){
+  if( (unsigned int)c<128 ){
     return ( (aAscii[c >> 5] & (1 << (c & 0x001F)))==0 );
-  }else if( c<(1<<22) ){
+  }else if( (unsigned int)c<(1<<22) ){
     unsigned int key = (((unsigned int)c)<<10) | 0x000003FF;
     int iRes = 0;
     int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
     int iLo = 0;
     while( iHi>=iLo ){
       int iTest = (iHi + iLo) / 2;
       if( key >= aEntry[iTest] ){
         iRes = iTest;
         iLo = iTest+1;
       }else{
@@ skipping 210 matching lines @@
 
     if( bRemoveDiacritic ) ret = fts5_remove_diacritic(ret);
   }
   
   else if( c>=66560 && c<66600 ){
     ret = c + 40;
   }
 
   return ret;
 }