Up until version 3.42.0, there was a bug in json_valid() such that it would

return False (0) for a NULL input.  That bug is fixed in 3.42.0.  This
check-in adds a compile-time option -DSQLITE_LEGACY_JSON_VALID that restores
the old buggy behavior for applications that depend on it.

FossilOrigin-Name: 15c2eadbff8e732cca45d6c3771d1fcea5aab2127e87f2a611b41ccfef4d1a0d

manifest

@@ -1,5 +1,5 @@
-C New\stestcase()\smacro\sin\sthe\stokenizer,\sto\sbetter\sdocument\sits\sbehavior.
+C Up\suntil\sversion\s3.42.0,\sthere\swas\sa\sbug\sin\sjson_valid()\ssuch\sthat\sit\swould\nreturn\sFalse\s(0)\sfor\sa\sNULL\sinput.\s\sThat\sbug\sis\sfixed\sin\s3.42.0.\s\sThis\ncheck-in\sadds\sa\scompile-time\soption\s-DSQLITE_LEGACY_JSON_VALID\sthat\srestores\nthe\sold\sbuggy\sbehavior\sfor\sapplications\sthat\sdepend\son\sit.
-D 2023-08-10T18:50:00.513
+D 2023-08-11T11:12:46.745
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -588,7 +588,7 @@ F src/btreeInt.h 91a9e0c41a0e71fa91a742ec285c63dd8dcb38b73d14fae0ed7209174ff0fdc
 F src/build.c a8ae3b32d9aa9bbd2c0e97d7c0dd80def9fbca408425de1608f57ee6f47f45f4
 F src/callback.c db3a45e376deff6a16c0058163fe0ae2b73a2945f3f408ca32cf74960b28d490
 F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
-F src/ctime.c 20507cc0b0a6c19cd882fcd0eaeda32ae6a4229fb4b024cfdf3183043d9b703d
+F src/ctime.c cff2b493de894383832347c3a3f936a05f4e089a92b42366838da1735f3848b5
 F src/date.c f73f203b3877cef866c60ab402aec2bf89597219b60635cf50cbe3c5e4533e94
 F src/dbpage.c f3eea5f7ec47e09ee7da40f42b25092ecbe961fc59566b8e5f705f34335b2387
 F src/dbstat.c ec92074baa61d883de58c945162d9e666c13cd7cf3a23bc38b4d1c4d0b2c2bef
@@ -603,7 +603,7 @@ F src/hash.h 3340ab6e1d13e725571d7cee6d3e3135f0779a7d8e76a9ce0a85971fa3953c51
 F src/hwtime.h f9c2dfb84dce7acf95ce6d289e46f5f9d3d1afd328e53da8f8e9008e3b3caae6
 F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
 F src/insert.c 3f0a94082d978bbdd33c38fefea15346c6c6bffb70bc645a71dc0f1f87dd3276
-F src/json.c 9c231a853268ce6aee2e300e26d4445ba42117374a2275f8e9537b2f912909d6
+F src/json.c ae840f87b418f039f5d336b488933d09396bd31e6b31e855b93055ccaee4e255
 F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
 F src/loadext.c 176d6b2cb18a6ad73b133db17f6fc351c4d9a2d510deebdb76c22bde9cfd1465
 F src/main.c fde8f13c876a658b4e8b74b77d875ca887915c174ea6a2f3122d80966f93d865
@@ -1232,7 +1232,7 @@ F test/json/README.md 63e3e589e1df8fd3cc1588ba1faaff659214003f8b77a15af5c6452b35
 F test/json/json-generator.tcl dc0dd0f393800c98658fc4c47eaa6af29d4e17527380cd28656fb261bddc8a3f
 F test/json/json-q1.txt 65f9d1cdcc4cffa9823fb73ed936aae5658700cd001fde448f68bfb91c807307
 F test/json/json-speed-check.sh 8b7babf530faa58bd59d6d362cec8e9036a68c5457ff46f3b1f1511d21af6737 x
-F test/json101.test 94126d4291d4a00e45f6988ce885c410de69243490e46e70e9946cb6e6f9ea02
+F test/json101.test c98eca791dc29990e560264d6a46aad7966eb16a5f1b818d85a7c00bc2a4e9cd
 F test/json102.test 24f6f204f9cde45b971016691d0b92a9b4c58040d699e36d6b12cb165f9083ff
 F test/json103.test 53df87f83a4e5fa0c0a56eb29ff6c94055c6eb919f33316d62161a8880112dbe
 F test/json104.test 1b844a70cddcfa2e4cd81a5db0657b2e61e7f00868310f24f56a9ba0114348c1
@@ -1972,7 +1972,7 @@ F tool/max-limits.c cbb635fbb37ae4d05f240bfb5b5270bb63c54439
 F tool/merge-test.tcl de76b62f2de2a92d4c1ca4f976bce0aea6899e0229e250479b229b2a1914b176
 F tool/mkautoconfamal.sh f62353eb6c06ab264da027fd4507d09914433dbdcab9cb011cdc18016f1ab3b8
 F tool/mkccode.tcl 86463e68ce9c15d3041610fedd285ce32a5cf7a58fc88b3202b8b76837650dbe x
-F tool/mkctimec.tcl 38e3db33210a200aae791635125052a643a27aa0619a0debf19aa9c55e1b2dde x
+F tool/mkctimec.tcl aca4b83e49aecf10368cd5d11bc4847061041ade026db5bd8da17ef201f1403b x
 F tool/mkkeywordhash.c b9faa0ae7e14e4dbbcd951cddd786bf46b8a65bb07b129ba8c0cfade723aaffd
 F tool/mkmsvcmin.tcl 8897d515ef7f94772322db95a3b6fce6c614d84fe0bdd06ba5a1c786351d5a1d
 F tool/mkopcodec.tcl 33d20791e191df43209b77d37f0ff0904620b28465cca6990cf8d60da61a07ef
@@ -2050,8 +2050,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 4b0871fd367b6d9706e892aa13f64604967f5e3ba92381960f73aeabd3d23f84
+P b2fdac0b151864eb2aa79f0b0ee60f9c6d9f3eb8c7626605eac17a02a8cf59bc
-R a40fe5763d111aa30a3a21c2dead52e5
+R e87775d4810d0d66e5c1c0ab0600235d
 U drh
-Z d5cf7898ce1eeb270f6b6924ff8af0dd
+Z 4c6d3fbedad1c472acffb2c80d4f6273
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-b2fdac0b151864eb2aa79f0b0ee60f9c6d9f3eb8c7626605eac17a02a8cf59bc
+15c2eadbff8e732cca45d6c3771d1fcea5aab2127e87f2a611b41ccfef4d1a0d

src/ctime.c

@@ -60,9 +60,6 @@ static const char * const sqlite3azCompileOpt[] = {
 #ifdef SQLITE_4_BYTE_ALIGNED_MALLOC
   "4_BYTE_ALIGNED_MALLOC",
 #endif
-#ifdef SQLITE_64BIT_STATS
-  "64BIT_STATS",
-#endif
 #ifdef SQLITE_ALLOW_COVERING_INDEX_SCAN
 # if SQLITE_ALLOW_COVERING_INDEX_SCAN != 1
   "ALLOW_COVERING_INDEX_SCAN=" CTIMEOPT_VAL(SQLITE_ALLOW_COVERING_INDEX_SCAN),
@@ -399,6 +396,9 @@ static const char * const sqlite3azCompileOpt[] = {
 #ifdef SQLITE_INTEGRITY_CHECK_ERROR_MAX
   "INTEGRITY_CHECK_ERROR_MAX=" CTIMEOPT_VAL(SQLITE_INTEGRITY_CHECK_ERROR_MAX),
 #endif
+#ifdef SQLITE_LEGACY_JSON_VALID
+  "LEGACY_JSON_VALID",
+#endif
 #ifdef SQLITE_LIKE_DOESNT_MATCH_BLOBS
   "LIKE_DOESNT_MATCH_BLOBS",
 #endif

src/json.c

@@ -3009,7 +3009,13 @@ static void jsonValidFunc(
 ){
   JsonParse *p;          /* The parse */
   UNUSED_PARAMETER(argc);
-  if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return;
+  if( sqlite3_value_type(argv[0])==SQLITE_NULL ){
+#ifdef SQLITE_LEGACY_JSON_VALID
+    /* Incorrect legacy behavior was to return FALSE for a NULL input */
+    sqlite3_result_int(ctx, 0);
+#endif
+    return;
+  }
   p = jsonParseCached(ctx, argv[0], 0, 0);
   if( p==0 || p->oom ){
     sqlite3_result_error_nomem(ctx);

test/json101.test

@@ -923,9 +923,15 @@ do_execsql_test json-20.3 {
 # a NULL value as the JSON input.
 #
 db null NULL
-do_execsql_test json-21.1 {
+if {[db exists {SELECT * FROM pragma_compile_options WHERE compile_options LIKE '%legacy_json_valid%'}] {
-  SELECT json_valid(NULL);
+  do_execsql_test json-21.1-legacy {
-} NULL
+    SELECT json_valid(NULL);
+  } 0
+} else {
+  do_execsql_test json-21.1-correct {
+    SELECT json_valid(NULL);
+  } NULL
+}
 do_execsql_test json-21.2 {
   SELECT json_error_position(NULL);
 } NULL

tool/mkctimec.tcl

@@ -180,6 +180,7 @@ set boolean_defnil_options {
   SQLITE_IGNORE_FLOCK_LOCK_ERRORS
   SQLITE_INLINE_MEMCPY
   SQLITE_INT64_TYPE
+  SQLITE_LEGACY_JSON_VALID
   SQLITE_LIKE_DOESNT_MATCH_BLOBS
   SQLITE_LOCK_TRACE
   SQLITE_LOG_CACHE_SPILL