From: drh <drh@noemail.net>
Date: Mon, 4 Feb 2019 19:12:54 +0000 (+0000)
Subject: Ensure that the sqlite3_exec() callback gets the correct number of columns
X-Git-Tag: version-3.27.0~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2305414cdb540d9e0be03e7d00a157f3c782c3c;p=thirdparty%2Fsqlite.git

Ensure that the sqlite3_exec() callback gets the correct number of columns
for a query, even if the schema changes out from under it.

FossilOrigin-Name: a16ffb5a4b30f1ac4a8384fccde0a0f69e49545b6f9be9267928609328c4a151
---

diff --git a/manifest b/manifest
index 6ecadd2858..c15c8d0433 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Do\snot\srun\sshmlock.test\sas\spart\sof\sthe\sinmemory_journal\spermutation.
-D 2019-02-04T16:42:57.996
+C Ensure\sthat\sthe\ssqlite3_exec()\scallback\sgets\sthe\scorrect\snumber\sof\scolumns\nfor\sa\squery,\seven\sif\sthe\sschema\schanges\sout\sfrom\sunder\sit.
+D 2019-02-04T19:12:54.437
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F Makefile.in 178d8eb6840771149cee40b322d1b3be30d330198c522c903c1b66fb5a1bfca4
@@ -476,7 +476,7 @@ F src/hash.h ab34c5c54a9e9de2e790b24349ba5aab3dbb4fd4
 F src/hwtime.h 747c1bbe9df21a92e9c50f3bbec1de841dc5e5da
 F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
 F src/insert.c 3ed9ceaa4b7d56a6f2613355e1cd1ae5cfe31712bce2bf5aa93c5f1f130704b2
-F src/legacy.c 134ab3e3fae00a0f67a5187981d6935b24b337bcf0f4b3e5c9fa5763da95bf4e
+F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
 F src/loadext.c e6f10875d52aca3b7e57ce1ec174aeafc9b6c00b43000cd30d791f9cb490b7a6
 F src/main.c 27d7265625ea6eaccdfe7c53ef41adc179c9357a077702a860c1a3b0a037a16f
 F src/malloc.c 07295435093ce354c6d9063ac05a2eeae28bd251d2e63c48b3d67c12c76f7e18
@@ -1804,7 +1804,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P e467e4c8fa256ddd6c26c1f21bc26289a21f18b781737eaf706bc813ed8234fa
-R e08c01cce02d0dbb29ddb0449bc65fb9
-U dan
-Z 6723cba0480c8d70c3e9bd6fa8f41161
+P d3fea69cbb071867a90ad56ca05123ebf8e44689a92577a525a883c176c791bd
+R 2c871c531f70747307731415293fd53f
+U drh
+Z 520bd9b7175cb6c9db4e0d6ced40ee32
diff --git a/manifest.uuid b/manifest.uuid
index 0f6d7f6b25..9e0efc7d82 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-d3fea69cbb071867a90ad56ca05123ebf8e44689a92577a525a883c176c791bd
\ No newline at end of file
+a16ffb5a4b30f1ac4a8384fccde0a0f69e49545b6f9be9267928609328c4a151
\ No newline at end of file
diff --git a/src/legacy.c b/src/legacy.c
index 40959a8544..867587e5a2 100644
--- a/src/legacy.c
+++ b/src/legacy.c
@@ -46,7 +46,7 @@ int sqlite3_exec(
   sqlite3_mutex_enter(db->mutex);
   sqlite3Error(db, SQLITE_OK);
   while( rc==SQLITE_OK && zSql[0] ){
-    int nCol;
+    int nCol = 0;
     char **azVals = 0;
 
     pStmt = 0;
@@ -60,9 +60,7 @@ int sqlite3_exec(
       zSql = zLeftover;
       continue;
     }
-
     callbackIsInit = 0;
-    nCol = sqlite3_column_count(pStmt);
 
     while( 1 ){
       int i;
@@ -73,6 +71,7 @@ int sqlite3_exec(
           (SQLITE_DONE==rc && !callbackIsInit
                            && db->flags&SQLITE_NullCallback)) ){
         if( !callbackIsInit ){
+          nCol = sqlite3_column_count(pStmt);
           azCols = sqlite3DbMallocRaw(db, (2*nCol+1)*sizeof(const char*));
           if( azCols==0 ){
             goto exec_out;