Fix a potential dangling pointer deference in an ALTER TABLE run on a schema that...

FossilOrigin-Name: b9e2393cf201e3fc24519c5ae65d0a5953147d78884e53d44a7958747b4a7e13

diff --git a/manifest b/manifest
index a719feac7fddaf4ef082bc05c6c43bd70b83280a..1fcb18fbfeacaea3a1ee433f6f7d6e9ea07e15fa 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\sharmless\scompiler\swarnings\sfrom\sMSVC.
-D 2019-03-20T12:08:27.465
+C Fix\sa\spotential\sdangling\spointer\sdeference\sin\san\sALTER\sTABLE\srun\son\sa\sschema\sthat\scontains\sconstructs\sof\sthe\sform\s"PRIMARY\sKEY(column\sCOLLATE\scollation)".
+D 2019-03-20T16:58:21.326
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -460,7 +460,7 @@ F src/btmutex.c 8acc2f464ee76324bf13310df5692a262b801808984c1b79defb2503bbafadb6
 F src/btree.c 9bcd70009cac284622ef6816daca22fda99b4fb54ce0027b461dea52bcb299fa
 F src/btree.h 63b94fb38ce571c15eb6a3661815561b501d23d5948b2d1e951fbd7a2d04e8d3
 F src/btreeInt.h 6111c15868b90669f79081039d19e7ea8674013f907710baa3c814dc3f8bfd3f
-F src/build.c 3acec29b23948042173301a8befebae01a98344debf66cbd4467c8b9077707b8
+F src/build.c 0f88a2f52c80da71ceb6e95831622aa4aeda758b69011bde9eb87840c8d38672
 F src/callback.c 25dda5e1c2334a367b94a64077b1d06b2553369f616261ca6783c48bcb6bda73
 F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
 F src/ctime.c 109e58d00f62e8e71ee1eb5944ac18b90171c928ab2e082e058056e1137cc20b
@@ -625,7 +625,7 @@ F test/altermalloc.test 167a47de41b5c638f5f5c6efb59784002b196fff70f98d9b4ed3cd74
 F test/altermalloc2.test fa7b1c1139ea39b8dec407cf1feb032ca8e0076bd429574969b619175ad0174b
 F test/altertab.test 6e13f13d8c30708f16187908c31dadb1bfff9e3cb2a07a7392a7a5e076f58f4a
 F test/altertab2.test 5d423a2d1006085b05cc1b788863d5a860ea2da21c4f892d15e2f2a34c78348a
-F test/altertab3.test 35aadf590f75ffb1c22569cc353975c42c943bd6f815c2e97e5c2de85b548fd2
+F test/altertab3.test b917c2a287a1a97d6e2de216357066441985326a148c99467ca5c73dc17b386a
 F test/amatch1.test b5ae7065f042b7f4c1c922933f4700add50cdb9f
 F test/analyze.test 7168c8bffa5d5cbc53c05b7e9c7fcdd24b365a1bc5046ce80c45efa3c02e6b7c
 F test/analyze3.test ff62d9029e6deb2c914490c6b00caf7fae47cc85cdc046e4a0d0a4d4b87c71d8
@@ -1807,8 +1807,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 90acdbfce9c088582d5165589f7eac462b00062bbfffacdcc786eb9cf3ea5377 1c0fe5b5763fe5cbace9773dcdab742e126d0bd035ab13d61f9d134afa0afc0c
-R 417e85939120e076f0d5850acd5f41fd
-T +closed 1c0fe5b5763fe5cbace9773dcdab742e126d0bd035ab13d61f9d134afa0afc0c
-U drh
-Z a56e1576d70fb974480a5e8f7221fe60
+P f0f02d46e40667d0fc31c57eb26d459ce2f3a3c222c767fa371100b36e5335d1
+R 92c0df543aea117c127876d55752268a
+U dan
+Z d663988bb4007d82fa838edb1e98afe4

diff --git a/manifest.uuid b/manifest.uuid
index fc12ba30fa628170a4feae497e91f7432d0d7627..ffd85225fa4b070dc1bf0c81aec38172921436e2 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-f0f02d46e40667d0fc31c57eb26d459ce2f3a3c222c767fa371100b36e5335d1
\ No newline at end of file
+b9e2393cf201e3fc24519c5ae65d0a5953147d78884e53d44a7958747b4a7e13
\ No newline at end of file

diff --git a/src/build.c b/src/build.c
index 79ad744c52e78728cce111a1cb2421e489c31842..07cbaffd4480b354e6a307881e247414028708dd 100644 (file)
--- a/src/build.c
+++ b/src/build.c
@@ -1404,7 +1404,8 @@ void sqlite3AddPrimaryKey(
    && sortOrder!=SQLITE_SO_DESC
   ){
     if( IN_RENAME_OBJECT && pList ){
-      sqlite3RenameTokenRemap(pParse, &pTab->iPKey, pList->a[0].pExpr);
+      Expr *pCExpr = sqlite3ExprSkipCollate(pList->a[0].pExpr);
+      sqlite3RenameTokenRemap(pParse, &pTab->iPKey, pCExpr);
     }
     pTab->iPKey = iCol;
     pTab->keyConf = (u8)onError;

diff --git a/test/altertab3.test b/test/altertab3.test
index ca589341d6be7fdda6d474ef709b54e987d8a4f1..927b0d7bfcc73230ede3ccc6a1891617107b592d 100644 (file)
--- a/test/altertab3.test
+++ b/test/altertab3.test
@@ -114,6 +114,32 @@ do_execsql_test 4.2.3 {
   SELECT * FROM sqlite_master WHERE type='table' AND name!='t1';
 } {table t3 t3 3 {CREATE TABLE t3(e, f)}}
 
+#-------------------------------------------------------------------------
+reset_db
+do_execsql_test 5.0 {
+  CREATE TABLE t1 (
+      c1 integer, c2, PRIMARY KEY(c1 collate rtrim),
+      UNIQUE(c2)
+  )
+}
+do_execsql_test 5.1 {
+  ALTER TABLE t1 RENAME c1 TO c3;
+}
+
+#-------------------------------------------------------------------------
+reset_db
+do_execsql_test 6.0 {
+  CREATE TEMPORARY TABLE Table0 (
+    Col0 INTEGER, 
+    PRIMARY KEY(Col0 COLLATE RTRIM), 
+    FOREIGN KEY (Col0) REFERENCES Table0
+  );
+}
+
+do_execsql_test 6.1 {
+  ALTER TABLE Table0 RENAME Col0 TO Col0;
+}
+
 finish_test