From: drh <drh@noemail.net>
Date: Sat, 13 Oct 2012 23:16:00 +0000 (+0000)
Subject: Ensure that when the source of a backup is a database that is zero bytes
X-Git-Tag: version-3.7.15~70
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4e40ab5c85e114575fc8817dc2d0d348579b4658;p=thirdparty%2Fsqlite.git

Ensure that when the source of a backup is a database that is zero bytes
in size, the final destination database consists of at least one page.
Truncating it to zero bytes is equivalent to zeroing the schema cookie
and change counter, which can cause problems for existing clients.

FossilOrigin-Name: ca86138bda26c5ac5a7e67351acbd19fbd39b0ae
---

4e40ab5c85e114575fc8817dc2d0d348579b4658
diff --cc manifest
index ca0c8d1cc8,efaedf0366..1779f31e8b
--- a/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Allow\sthe\sshowdb\stool\sto\sbe\scompiled\swith\sMSVC.
- D 2012-10-13T09:31:20.156
 -C Mark\san\salways-true\sconditional\sas\ssuch.
 -D 2012-10-13T20:55:12.166
++C Ensure\sthat\swhen\sthe\ssource\sof\sa\sbackup\sis\sa\sdatabase\sthat\sis\szero\sbytes\s\nin\ssize,\sthe\sfinal\sdestination\sdatabase\sconsists\sof\sat\sleast\sone\spage.\s\nTruncating\sit\sto\szero\sbytes\sis\sequivalent\sto\szeroing\sthe\sschema\scookie\s\nand\schange\scounter,\swhich\scan\scause\sproblems\sfor\sexisting\sclients.
++D 2012-10-13T23:16:00.555
  F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
  F Makefile.in 5f4f26109f9d80829122e0e09f9cda008fa065fb
  F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@@ -1019,7 -1020,7 +1020,7 @@@ F tool/vdbe-compress.tcl f12c884766bd14
  F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
  F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
  F tool/win/sqlite.vsix 67d8a99aceb56384a81b3f30d6c71743146d2cc9
- P de784399ed1f0e27fc875e32719643d19819c8fb
- R eae4686c36e29e07358a0f64b1678cc7
- U mistachkin
- Z 3d1371a2f131ddfec977348963d5fb7d
 -P 637fb1c1b7642ba3a404dde32e40d4a4ad16fe14
++P dce391fc6302301e9ac53a5e4fc69f3bd7ba13a7 ae025cae2266a91d4226bbdb66f82b9d7714750a
+ R 6411855ed00a2b0cd5f5a66552e9b1b4
+ U drh
 -Z 6ad0f8bd893c2352d9cf2f568adda82f
++Z 1d2efa01eaf44e38b73ed9ee9ed57fac
diff --cc manifest.uuid
index 3bf3a77875,1030848312..62b32c9754
--- a/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- dce391fc6302301e9ac53a5e4fc69f3bd7ba13a7
 -ae025cae2266a91d4226bbdb66f82b9d7714750a
++ca86138bda26c5ac5a7e67351acbd19fbd39b0ae