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Handle a special case of corruption that can present if "PRAGMA writable_schema=1" is set. Fix for dbsqlfuzz test case 6229ad63de49e3ba0630aaf0058868f36008bcca.

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FossilOrigin-Name: 58f36af2271517abafa9f4a46f2a5f97e66c001675c17868282197d599603d1b
This commit is contained in:
dan
2021-04-08 15:19:46 +00:00
parent d4f7ec7663
commit 1bae648b73
3 changed files with 22 additions and 11 deletions
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14
manifest
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@@ -1,5 +1,5 @@
C Hardden\sthe\sfilter_over\sgrammar\srule\sagainst\sOOM\sfaults.\ndbsqlfuzz\se47c54502a9c36778a5ed553199d5870e2ebd9f2
D 2021-04-08T14:15:26.728
C Handle\sa\sspecial\scase\sof\scorruption\sthat\scan\spresent\sif\s"PRAGMA\swritable_schema=1"\sis\sset.\sFix\sfor\sdbsqlfuzz\stest\scase\s6229ad63de49e3ba0630aaf0058868f36008bcca.
D 2021-04-08T15:19:46.185
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -483,7 +483,7 @@ F src/auth.c 08954fdc4cc2da5264ba5b75cfd90b67a6fc7d1710a02ccf917c38eadec77853
F src/backup.c 3014889fa06e20e6adfa0d07b60097eec1f6e5b06671625f476a714d2356513d
F src/bitvec.c 17ea48eff8ba979f1f5b04cc484c7bb2be632f33
F src/btmutex.c 8acc2f464ee76324bf13310df5692a262b801808984c1b79defb2503bbafadb6
F src/btree.c bd7d9d608f42c0202c03acd13e47de1fbb14bd0f79dc09f4142cbc58671fb01d
F src/btree.c 829bf06416fcc8b3ab1bca01475c82ff47d75e06b2786a0dcebc695d37ae239e
F src/btree.h 096cc53baa58be22b02c896d1cf933c38cfc6d65f9253c1367ece8cc88a24de5
F src/btreeInt.h 7bc15a24a02662409ebcd6aeaa1065522d14b7fda71573a2b0568b458f514ae0
F src/build.c 3a63a0dd142e238247fba0c20d6321ef1a8917de7814657ad279a02d2ff6da78
@@ -1912,7 +1912,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 38a1085cbd5b6dd5f418efa15c6da05de781f794b8f3dad3f871c96019fed099
R 1d7c0bfa4648db3fd607bbdef3ff6d40
U drh
Z ef9e8dda92779cb066dd8a613f6189de
P f375f541efee520042be83548ad96dfa889e2c349eda5db7612ac2336dd4e4f9
R 399e530b9b47e95d4c487623c13f5939
U dan
Z a74485b8a62e83c22667a323b825dd17

2
manifest.uuid
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@@ -1 +1 @@
f375f541efee520042be83548ad96dfa889e2c349eda5db7612ac2336dd4e4f9
58f36af2271517abafa9f4a46f2a5f97e66c001675c17868282197d599603d1b

17
src/btree.c
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@@ -8698,9 +8698,20 @@ int sqlite3BtreeInsert(
assert( (flags & (BTREE_SAVEPOSITION|BTREE_APPEND|BTREE_PREFORMAT))==flags );
assert( (flags & BTREE_PREFORMAT)==0 || seekResult || pCur->pKeyInfo==0 );
if( pCur->eState==CURSOR_FAULT ){
assert( pCur->skipNext!=SQLITE_OK );
return pCur->skipNext;
if( pCur->eState>=CURSOR_REQUIRESEEK ){
/* The cursor can be in REQUIRESEEK state when seekResult is non-zero
** only if the schema is corrupt such that there is more than one table or
** index with the same root page as used by the cursor. Which can only
** happen if the SQLITE_NoSchemaError flag was set when the schema was
** loaded. This cannot be asserted though, as a user might set the flag,
** load the schema, and then unset the flag. */
assert( pCur->eState==CURSOR_REQUIRESEEK || pCur->eState==CURSOR_FAULT );
assert( pCur->eState==CURSOR_REQUIRESEEK || pCur->skipNext!=SQLITE_OK );
if( pCur->eState==CURSOR_REQUIRESEEK ){
if( seekResult ) return SQLITE_CORRUPT_BKPT;
}else{
return pCur->skipNext;
}
}
assert( cursorOwnsBtShared(pCur) );