Another micro-optimization in accessPayload(). Slightly smaller and faster.

FossilOrigin-Name: c012619b65d70b4ef6cf33532ef57d7f8ba42d74

diff --git a/manifest b/manifest
index f9f99a3dde85b6b4f2961710e619e65bdfdccc7e..f94e40935d5b15d7a28bfc493fd146ade729e015 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Performance\soptimization\sin\saccessPayload().
-D 2017-01-27T01:13:49.702
+C Another\smicro-optimization\sin\saccessPayload().\s\sSlightly\ssmaller\sand\sfaster.
+D 2017-01-27T01:25:00.940
 F Makefile.in 5f415e7867296d678fed2e6779aea10c1318b4bc
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc b8ca53350ae545e3562403d5da2a69cec79308da
@@ -333,7 +333,7 @@ F src/auth.c 930b376a9c56998557367e6f7f8aaeac82a2a792
 F src/backup.c faf17e60b43233c214aae6a8179d24503a61e83b
 F src/bitvec.c 17ea48eff8ba979f1f5b04cc484c7bb2be632f33
 F src/btmutex.c 0e9ce2d56159b89b9bc8e197e023ee11e39ff8ca
-F src/btree.c 1329274c46bc554daf7acde825f72f76f66647ec
+F src/btree.c 6a63fa34e6fe86e87090e41963c0f2fcf9d3e16d
 F src/btree.h e6d352808956ec163a17f832193a3e198b3fb0ac
 F src/btreeInt.h 10c4b77c2fb399580babbcc7cf652ac10dba796e
 F src/build.c 9e799f1edd910dfa8a0bc29bd390d35d310596af
@@ -1547,7 +1547,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 68e7a8c6765649195ef1ad9407d87d44a307b462
-R cab1deb289447016960f1fadc0c9e121
+P ebb1fd98d4e448aa6d8f1e5be7ddc5bedb3db95b
+R 63992a28f021aa7b8223daa601910fb3
 U drh
-Z 955f6c694c099beee31ec142603efb52
+Z 78e3ca04c2459249956256691b4d7091

diff --git a/manifest.uuid b/manifest.uuid
index a23f86a1ed0e7d5f2780d516e413c89899322c64..23c39251fa804c3ee2c760e5cb8f0fb41ebcb8b6 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-ebb1fd98d4e448aa6d8f1e5be7ddc5bedb3db95b
\ No newline at end of file
+c012619b65d70b4ef6cf33532ef57d7f8ba42d74
\ No newline at end of file

diff --git a/src/btree.c b/src/btree.c
index 54664043d45be030413118f4599b99111cef607f..45a1c5a0f8f336a291740dd714e210e0557a2b1a 100644 (file)
--- a/src/btree.c
+++ b/src/btree.c
@@ -4617,16 +4617,16 @@ static int accessPayload(
           }
         }
         amt -= a;
+        if( amt==0 ) return rc;
         pBuf += a;
       }
-      if( amt==0 ) break;
       if( rc ) break;
       iIdx++;
     }
   }
 
   if( rc==SQLITE_OK && amt>0 ){
-    return SQLITE_CORRUPT_BKPT;
+    return SQLITE_CORRUPT_BKPT; /* Overflow chain ends prematurely */
   }
   return rc;
 }