Fix problem in sqlar_uncompress() when being used to extract symbolic links.

FossilOrigin-Name: 4d90c3f179a3d7355b6b0202faf56f0be4be56986920576e528208cb84daa4af

1 files changed, 4 insertions, 3 deletions

diff --git a/ext/misc/sqlar.c b/ext/misc/sqlar.c
index be079a546..9f726f0b8 100644
--- a/ext/misc/sqlar.c
+++ b/ext/misc/sqlar.c
@@ -81,7 +81,7 @@ static void sqlarUncompressFunc(
   sqlite3_value **argv
 ){
   uLong nData;
-  uLongf sz;
+  sqlite3_int64 sz;
 
   assert( argc==2 );
   sz = sqlite3_value_int(argv[1]);
@@ -89,14 +89,15 @@ static void sqlarUncompressFunc(
   if( sz<=0 || sz==(nData = sqlite3_value_bytes(argv[0])) ){
     sqlite3_result_value(context, argv[0]);
   }else{
+    uLongf szf = sz;
     const Bytef *pData= sqlite3_value_blob(argv[0]);
     Bytef *pOut = sqlite3_malloc(sz);
     if( pOut==0 ){
       sqlite3_result_error_nomem(context);
-    }else if( Z_OK!=uncompress(pOut, &sz, pData, nData) ){
+    }else if( Z_OK!=uncompress(pOut, &szf, pData, nData) ){
       sqlite3_result_error(context, "error in uncompress()", -1);
     }else{
-      sqlite3_result_blob(context, pOut, sz, SQLITE_TRANSIENT);
+      sqlite3_result_blob(context, pOut, szf, SQLITE_TRANSIENT);
     }
     sqlite3_free(pOut);
   }