Simplify assert() statements used to verify correct operation of

record comparison routines.

FossilOrigin-Name: 3300d62dcbe74842cf86ca436959fe4e77a89f84

manifest

@@ -1,5 +1,5 @@
-C Failure\sto\sextend\sa\stemp\sfile\sfor\suse\swith\smmap()\sin\svdbesort.c\sis\sbenign.
-D 2014-05-02T16:22:55.791
+C Simplify\sassert()\sstatements\sused\sto\sverify\scorrect\soperation\sof\s\nrecord\scomparison\sroutines.
+D 2014-05-02T17:33:16.279
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 2ef13430cd359f7b361bb863504e227b25cc7f81
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -283,7 +283,7 @@ F src/vdbe.c b3510cc71f706beffc66e2aa4bbda54bcd5e9668
 F src/vdbe.h 394464909ed682334aa3d5831aae0c2fe2abef94
 F src/vdbeInt.h e6d83e5bfd62fc6685ba1ed6153f7099f82de9f7
 F src/vdbeapi.c 0ed6053f947edd0b30f64ce5aeb811872a3450a4
-F src/vdbeaux.c e493f38758c4b8f4ca2007cf6a700bd405d192f3
+F src/vdbeaux.c c9a8c917776c941af99285594d5c30d99e21c99a
 F src/vdbeblob.c 9205ce9d3b064d9600f8418a897fc88b5687d9ac
 F src/vdbemem.c 6fc77594c60f6155404f3f8d71bf36d1fdeb4447
 F src/vdbesort.c 6bcf73fb160ee5bb8ce8a8ec61fda268b081dbb7
@@ -1166,7 +1166,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh d1a6de74685f360ab718efda6265994b99bbea01
 F tool/win/sqlite.vsix 030f3eeaf2cb811a3692ab9c14d021a75ce41fff
-P 9196ce407379ca3b151b601b98848771e5cb4e8f
-R 51e21c516ddbd5830d43ea54f991a56e
+P d4d396387d373bd1e82eda2c7c2e7ca35ec099c4
+R defe6572bf21263fd4b2b33706bcd8e7
 U drh
-Z 19bdd7c6b9f54ab4b2fbcff19d13a623
+Z 26e6dec065eafceab8263c10d377378f

manifest.uuid

@@ -1 +1 @@
-d4d396387d373bd1e82eda2c7c2e7ca35ec099c4
+3300d62dcbe74842cf86ca436959fe4e77a89f84

src/vdbeaux.c

@@ -3137,10 +3137,14 @@ void sqlite3VdbeRecordUnpack(
 ** sqlite3VdbeSerialGet() and sqlite3MemCompare() functions. It is used
 ** in assert() statements to ensure that the optimized code in
 ** sqlite3VdbeRecordCompare() returns results with these two primitives.
+**
+** Return true if the result of comparison is equivalent to desiredResult.
+** Return false if there is a disagreement.
 */
 static int vdbeRecordCompareDebug(
   int nKey1, const void *pKey1, /* Left key */
-  const UnpackedRecord *pPKey2  /* Right key */
+  const UnpackedRecord *pPKey2, /* Right key */
+  int desiredResult             /* Correct answer */
 ){
   u32 d1;            /* Offset into aKey[] of next data element */
   u32 idx1;          /* Offset into aKey[] of next header element */
@@ -3202,7 +3206,7 @@ static int vdbeRecordCompareDebug(
       if( pKeyInfo->aSortOrder[i] ){
         rc = -rc;  /* Invert the result for DESC sort order. */
       }
-      return rc;
+      goto debugCompareEnd;
     }
     i++;
   }while( idx1<szHdr1 && i<pPKey2->nField );
@@ -3216,7 +3220,15 @@ static int vdbeRecordCompareDebug(
   /* rc==0 here means that one of the keys ran out of fields and
   ** all the fields up to that point were equal. Return the the default_rc
   ** value.  */
-  return pPKey2->default_rc;
+  rc = pPKey2->default_rc;
+
+debugCompareEnd:
+  if( desiredResult==0 && rc==0 ) return 1;
+  if( desiredResult<0 && rc<0 ) return 1;
+  if( desiredResult>0 && rc>0 ) return 1;
+  if( CORRUPT_DB ) return 1;
+  if( pKeyInfo->db->mallocFailed ) return 1;
+  return 0;
 }
 #endif
 
@@ -3564,11 +3576,7 @@ int sqlite3VdbeRecordCompare(
       if( pKeyInfo->aSortOrder[i] ){
         rc = -rc;
       }
-      assert( CORRUPT_DB
-          || (rc<0 && vdbeRecordCompareDebug(nKey1, pKey1, pPKey2)<0)
-          || (rc>0 && vdbeRecordCompareDebug(nKey1, pKey1, pPKey2)>0)
-          || pKeyInfo->db->mallocFailed
-      );
+      assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, rc) );
       assert( mem1.zMalloc==0 );  /* See comment below */
       return rc;
     }
@@ -3587,9 +3595,7 @@ int sqlite3VdbeRecordCompare(
   /* rc==0 here means that one or both of the keys ran out of fields and
   ** all the fields up to that point were equal. Return the the default_rc
   ** value.  */
-  assert( CORRUPT_DB 
-       || pPKey2->default_rc==vdbeRecordCompareDebug(nKey1, pKey1, pPKey2) 
-  );
+  assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, pPKey2->default_rc) );
   return pPKey2->default_rc;
 }
 
@@ -3686,11 +3692,7 @@ static int vdbeRecordCompareInt(
     res = pPKey2->default_rc;
   }
 
-  assert( (res==0 && vdbeRecordCompareDebug(nKey1, pKey1, pPKey2)==0)
-       || (res<0 && vdbeRecordCompareDebug(nKey1, pKey1, pPKey2)<0)
-       || (res>0 && vdbeRecordCompareDebug(nKey1, pKey1, pPKey2)>0)
-       || CORRUPT_DB
-  );
+  assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, res) );
   return res;
 }
 
@@ -3750,11 +3752,7 @@ static int vdbeRecordCompareString(
     }
   }
 
-  assert( (res==0 && vdbeRecordCompareDebug(nKey1, pKey1, pPKey2)==0)
-       || (res<0 && vdbeRecordCompareDebug(nKey1, pKey1, pPKey2)<0)
-       || (res>0 && vdbeRecordCompareDebug(nKey1, pKey1, pPKey2)>0)
-       || CORRUPT_DB
-  );
+  assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, res) );
   return res;
 }