From 4ed0b117f3ddfe97434dbd4ff47b9c782076cd0d Mon Sep 17 00:00:00 2001
From: drh <>
Date: Sat, 23 Dec 2023 11:31:47 +0000
Subject: [PATCH] Add debugging output routines sqlite3ShowWhereLoop(X) and
 sqlite3ShowWhereLoopList(X) that can be invoked from a debugger to show a
 summary of the content of a single WhereLoop object or a list of WhereLoop
 objects.  No change in release builds.

FossilOrigin-Name: 5db30bcc338aac1cf081de2deec7e60749ae012e2b6f95ccf745623adb4a31dc
---
 manifest      | 12 ++++++------
 manifest.uuid |  2 +-
 src/where.c   | 32 +++++++++++++++++++++++---------
 3 files changed, 30 insertions(+), 16 deletions(-)

diff --git a/manifest b/manifest
index 0d989bc96a..ee09b1add4 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Change\sparameters\son\sa\sdebugging\sfunction\sto\sinclude\s"const".
-D 2023-12-22T21:22:55.369
+C Add\sdebugging\soutput\sroutines\ssqlite3ShowWhereLoop(X)\sand\nsqlite3ShowWhereLoopList(X)\sthat\scan\sbe\sinvoked\sfrom\sa\sdebugger\sto\sshow\na\ssummary\sof\sthe\scontent\sof\sa\ssingle\sWhereLoop\sobject\sor\sa\slist\sof\sWhereLoop\nobjects.\s\sNo\schange\sin\srelease\sbuilds.
+D 2023-12-23T11:31:47.742
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -822,7 +822,7 @@ F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
 F src/wal.c e5247a3406531b705b44630e9ccf9ca0e5c74955ef19c06fbb146d765c500c20
 F src/wal.h ba252daaa94f889f4b2c17c027e823d9be47ce39da1d3799886bbd51f0490452
 F src/walker.c 7c7ea0115345851c3da4e04e2e239a29983b61fb5b038b94eede6aba462640e2
-F src/where.c a97ed10fccacadff0377243ec277046dec572b86e8819621d2851de95210e1e9
+F src/where.c d2c3185186aefbb624fcd0632eba944d44e19b83e000474df5d601f3d7c508e2
 F src/whereInt.h 82a13766f13d1a53b05387c2e60726289ef26404bc7b9b1f7770204d97357fb8
 F src/wherecode.c 5d77db30a2a3dd532492ae882de114edba2fae672622056b1c7fd61f5917a8f1
 F src/whereexpr.c dc5096eca5ed503999be3bdee8a90c51361289a678d396a220912e9cb73b3c00
@@ -2156,8 +2156,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 89563311adb0ab7c7a3eadb11c2e27fbca50c56fce8ca616628facbc00d72b88
-R b050502a9d7d16c5a5f212017732a147
+P 94c3e1110c6590261bd30ba317fba4dd94023d69b81a94f4b216cce748fe7489
+R bf03b252f804ee5df8768da2a38496d3
 U drh
-Z 4b93a4c74d01e1f20841ce3c527299a7
+Z d7bc6f2c748bddf995593faff855247e
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 97aa18321b..8e28a9ae73 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-94c3e1110c6590261bd30ba317fba4dd94023d69b81a94f4b216cce748fe7489
\ No newline at end of file
+5db30bcc338aac1cf081de2deec7e60749ae012e2b6f95ccf745623adb4a31dc
\ No newline at end of file
diff --git a/src/where.c b/src/where.c
index 80314a5b05..cae3dd0749 100644
--- a/src/where.c
+++ b/src/where.c
@@ -2259,15 +2259,20 @@ void sqlite3WhereClausePrint(WhereClause *pWC){
 **     1.002.001         t2.t2xy              2 f 010241 N 2 cost 0,56,31
 */
 void sqlite3WhereLoopPrint(const WhereLoop *p, const WhereClause *pWC){
-  WhereInfo *pWInfo = pWC->pWInfo;
-  int nb = 1+(pWInfo->pTabList->nSrc+3)/4;
-  SrcItem *pItem = pWInfo->pTabList->a + p->iTab;
-  Table *pTab = pItem->pTab;
-  Bitmask mAll = (((Bitmask)1)<<(nb*4)) - 1;
-  sqlite3DebugPrintf("%c%2d.%0*llx.%0*llx", p->cId,
-                     p->iTab, nb, p->maskSelf, nb, p->prereq & mAll);
-  sqlite3DebugPrintf(" %12s",
-                     pItem->zAlias ? pItem->zAlias : pTab->zName);
+  if( pWC ){
+    WhereInfo *pWInfo = pWC->pWInfo;
+    int nb = 1+(pWInfo->pTabList->nSrc+3)/4;
+    SrcItem *pItem = pWInfo->pTabList->a + p->iTab;
+    Table *pTab = pItem->pTab;
+    Bitmask mAll = (((Bitmask)1)<<(nb*4)) - 1;
+    sqlite3DebugPrintf("%c%2d.%0*llx.%0*llx", p->cId,
+                       p->iTab, nb, p->maskSelf, nb, p->prereq & mAll);
+    sqlite3DebugPrintf(" %12s",
+                       pItem->zAlias ? pItem->zAlias : pTab->zName);
+  }else{
+    sqlite3DebugPrintf("%c%2d.%03llx.%03llx %c%d",
+         p->cId, p->iTab, p->maskSelf, p->prereq & 0xfff, p->cId, p->iTab);
+  }
   if( (p->wsFlags & WHERE_VIRTUALTABLE)==0 ){
     const char *zName;
     if( p->u.btree.pIndex && (zName = p->u.btree.pIndex->zName)!=0 ){
@@ -2304,6 +2309,15 @@ void sqlite3WhereLoopPrint(const WhereLoop *p, const WhereClause *pWC){
     }
   }
 }
+void sqlite3ShowWhereLoop(const WhereLoop *p){
+  sqlite3WhereLoopPrint(p, 0);
+}
+void sqlite3ShowWhereLoopList(const WhereLoop *p){
+  while( p ){
+    sqlite3WhereLoopPrint(p, 0);
+    p = p->pNextLoop;
+  }
+}
 #endif
 
 /*
-- 
2.47.2