Fix a memory leak: a failure to deallocate the P3 parameter on a call

to sqlite3VdbeChangeP3. (CVS 2695)

FossilOrigin-Name: 714254cbc12564d44548707043fdcdffb17e4fde

manifest

@@ -1,5 +1,5 @@
-C The\stable_info\spragma\snow\sgives\sthe\sorder\sof\scolumns\sin\sthe\sprimary\skey.\s(CVS\s2694)
-D 2005-09-15T21:24:52
+C Fix\sa\smemory\sleak:\sa\sfailure\sto\sdeallocate\sthe\sP3\sparameter\son\sa\scall\nto\ssqlite3VdbeChangeP3.\s(CVS\s2695)
+D 2005-09-16T00:27:01
 F Makefile.in 12784cdce5ffc8dfb707300c34e4f1eb3b8a14f1
 F Makefile.linux-gcc 06be33b2a9ad4f005a5f42b22c4a19dab3cbb5c7
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -84,7 +84,7 @@ F src/vdbe.c 7b20b81b2643c0cc616c3fec6435f13c6e5fa6db
 F src/vdbe.h c8e105979fc7aaf5b8004e9621904e3bd096dfa2
 F src/vdbeInt.h 3dd2a29c7b0a55404c35f93caae81fb42f4cb70a
 F src/vdbeapi.c 72213ce0c1ab8b215b2ae0ed342511bf769c1e60
-F src/vdbeaux.c 670264f8b8ddbc4277adf85ab945a59a3aaef871
+F src/vdbeaux.c df2bda6fdd8a7c9e99561b3975f36a2607912791
 F src/vdbefifo.c 9efb94c8c3f4c979ebd0028219483f88e57584f5
 F src/vdbemem.c fea0744936008831daa17cdc75056c3ca1469690
 F src/where.c 715e317eb37b89961ad7c5515a18f1e2eb1c7fd8
@@ -307,7 +307,7 @@ F www/tclsqlite.tcl ddcf912ea48695603c8ed7efb29f0812ef8d1b49
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl a99cf5f6d8bd4d5537584a2b342f0fb9fa601d8b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P 81fdffdff6fd107c361b1ee69649455143bf3921
-R 5d6fa84265a140f10ff04dd28f842703
+P 9b60f48de7fbca96c6e26266a8fb9eed8bc378f2
+R 128fe9626d0d2bd0ae740c2610205a2e
 U drh
-Z edb36e317a14972b7208ac1e96f014f6
+Z ed6250cc3e36da4b3eb7293f20c17966

manifest.uuid

@@ -1 +1 @@
-9b60f48de7fbca96c6e26266a8fb9eed8bc378f2
+714254cbc12564d44548707043fdcdffb17e4fde

src/vdbeaux.c

@@ -68,9 +68,11 @@ static void resizeOpArray(Vdbe *p, int N){
     p->aOp = sqliteRealloc(p->aOp, N*sizeof(Op));
   }else if( p->nOpAlloc<N ){
     int oldSize = p->nOpAlloc;
+    VdbeOp *pNew;
     p->nOpAlloc = N+100;
-    p->aOp = sqliteRealloc(p->aOp, p->nOpAlloc*sizeof(Op));
-    if( p->aOp ){
+    pNew = sqliteRealloc(p->aOp, p->nOpAlloc*sizeof(Op));
+    if( pNew ){
+      p->aOp = pNew;
       memset(&p->aOp[oldSize], 0, (p->nOpAlloc-oldSize)*sizeof(Op));
     }
   }
@@ -348,6 +350,27 @@ void sqlite3VdbeChangeP2(Vdbe *p, int addr, int val){
   }
 }
 
+
+/*
+** Delete a P3 value if necessary.
+*/
+static void freeP3(int p3type, void *p3){
+  if( p3 ){
+    if( p3type==P3_DYNAMIC || p3type==P3_KEYINFO ){
+      sqliteFree(p3);
+    }
+    if( p3type==P3_VDBEFUNC ){
+      VdbeFunc *pVdbeFunc = (VdbeFunc *)p3;
+      sqlite3VdbeDeleteAuxData(pVdbeFunc, 0);
+      sqliteFree(pVdbeFunc);
+    }
+    if( p3type==P3_MEM ){
+      sqlite3ValueFree((sqlite3_value*)p3);
+    }
+  }
+}
+
+
 /*
 ** Change the value of the P3 operand for a specific instruction.
 ** This routine is useful when a large program is loaded from a
@@ -377,12 +400,7 @@ void sqlite3VdbeChangeP3(Vdbe *p, int addr, const char *zP3, int n){
   Op *pOp;
   assert( p->magic==VDBE_MAGIC_INIT );
   if( p==0 || p->aOp==0 ){
-    if( n==P3_DYNAMIC || n==P3_KEYINFO_HANDOFF ){
-      sqliteFree((void*)zP3);
-    }
-    if( n==P3_MEM ){
-      sqlite3ValueFree((sqlite3_value *)zP3);
-    }
+    freeP3(n, (void*)*(char**)&zP3);
     return;
   }
   if( addr<0 || addr>=p->nOp ){
@@ -390,10 +408,8 @@ void sqlite3VdbeChangeP3(Vdbe *p, int addr, const char *zP3, int n){
     if( addr<0 ) return;
   }
   pOp = &p->aOp[addr];
-  if( pOp->p3 && pOp->p3type==P3_DYNAMIC ){
-    sqliteFree(pOp->p3);
-    pOp->p3 = 0;
-  }
+  freeP3(pOp->p3type, pOp->p3);
+  pOp->p3 = 0;
   if( zP3==0 ){
     pOp->p3 = 0;
     pOp->p3type = P3_NOTUSED;
@@ -1331,17 +1347,7 @@ void sqlite3VdbeDelete(Vdbe *p){
   if( p->aOp ){
     for(i=0; i<p->nOp; i++){
       Op *pOp = &p->aOp[i];
-      if( pOp->p3type==P3_DYNAMIC || pOp->p3type==P3_KEYINFO ){
-        sqliteFree(pOp->p3);
-      }
-      if( pOp->p3type==P3_VDBEFUNC ){
-        VdbeFunc *pVdbeFunc = (VdbeFunc *)pOp->p3;
-        sqlite3VdbeDeleteAuxData(pVdbeFunc, 0);
-        sqliteFree(pVdbeFunc);
-      }
-      if( pOp->p3type==P3_MEM ){
-        sqlite3ValueFree((sqlite3_value*)pOp->p3);
-      }
+      freeP3(pOp->p3type, pOp->p3);
     }
     sqliteFree(p->aOp);
   }