Add the (deliberately undocumented) sqlite_log() SQL function as a built-in.

FossilOrigin-Name: f7806e03995b314771aa72a08ce55d56d60096cf

manifest

@@ -1,5 +1,5 @@
-C Invoke\sthe\sunix\sopen()\ssystem\scall\sthrough\sa\swrapper\sto\savoid\sproblems\s\nresulting\sfrom\sdiffering\sdeclarations\sto\sthat\sfunction\sin\svarious\ssystems.
-D 2011-04-25T18:01:27.439
+C Add\sthe\s(deliberately\sundocumented)\ssqlite_log()\sSQL\sfunction\sas\sa\sbuilt-in.
+D 2011-04-25T18:03:10.263
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 7a4d9524721d40ef9ee26f93f9bd6a51dba106f2
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -133,7 +133,7 @@ F src/delete.c 7a24fcc9a31664d145acb97ce56b6d9f249a25e4
 F src/expr.c e3cf0957c6b8faaaf7386a3bc69e53c0dc9705be
 F src/fault.c 160a0c015b6c2629d3899ed2daf63d75754a32bb
 F src/fkey.c a43ba8a005fb5efd1deeee06853e3a6120d46a91
-F src/func.c 3a8cb2fb2de3e3aed7f39106daf4878d9d17fcce
+F src/func.c 6d907d397c9e6eded680f8946499efdf224d34bd
 F src/global.c 02335177cf6946fe5525c6f0755cf181140debf3
 F src/hash.c 458488dcc159c301b8e7686280ab209f1fb915af
 F src/hash.h 2894c932d84d9f892d4b4023a75e501f83050970
@@ -930,7 +930,7 @@ F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
 F tool/split-sqlite3c.tcl d9be87f1c340285a3e081eb19b4a247981ed290c
 F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
-P ddeea5ab5f6c0c4a86cdfbbb9f24d9d54bf8d301
-R c3c570e59b4504f5792e40be1884b2ad
+P 4c7ff4dd352276e9c01cc536e188cbcd69396952
+R 02826977cda64533dcdcab57c0092168
 U drh
-Z 99b5b07687fe54475ef75b698d77b786
+Z ae88889f134cbeb0e55dabbab9faed47

manifest.uuid

@@ -1 +1 @@
-4c7ff4dd352276e9c01cc536e188cbcd69396952
+f7806e03995b314771aa72a08ce55d56d60096cf

src/func.c

@@ -774,6 +774,21 @@ static void sourceidFunc(
   sqlite3_result_text(context, sqlite3_sourceid(), -1, SQLITE_STATIC);
 }
 
+/*
+** Implementation of the sqlite_log() function.  This is a wrapper around
+** sqlite3_log().  The return value is NULL.  The function exists purely for
+** its side-effects.
+*/
+static void logFunc(
+  sqlite3_context *context,
+  int argc,
+  sqlite3_value **argv
+){
+  UNUSED_PARAMETER(argc);
+  UNUSED_PARAMETER(context);
+  sqlite3_log(sqlite3_value_int(argv[0]), "%s", sqlite3_value_text(argv[1]));
+}
+
 /*
 ** Implementation of the sqlite_compileoption_used() function.
 ** The result is an integer that identifies if the compiler option
@@ -1541,6 +1556,7 @@ void sqlite3RegisterGlobalFunctions(void){
     FUNCTION(nullif,             2, 0, 1, nullifFunc       ),
     FUNCTION(sqlite_version,     0, 0, 0, versionFunc      ),
     FUNCTION(sqlite_source_id,   0, 0, 0, sourceidFunc     ),
+    FUNCTION(sqlite_log,         2, 0, 0, logFunc          ),
 #ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
     FUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc  ),
     FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc  ),