From 4ab31475dcba94fddd1c8329ac96a49048ad1e76 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Mon, 25 May 2015 22:17:06 +0000
Subject: [PATCH] Improved tracing capabilities in fuzzcheck.

FossilOrigin-Name: 864bfdbfe7b196cc9df2136b15a28e2a0f2713cb
---
 manifest         | 12 ++++++------
 manifest.uuid    |  2 +-
 test/fuzzcheck.c | 39 +++++++++++++++++----------------------
 3 files changed, 24 insertions(+), 29 deletions(-)

diff --git a/manifest b/manifest
index c336fe0310..737af4779b 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Add\sthe\s--native-vfs\soption\son\sfuzzcheck.
-D 2015-05-25T21:59:05.654
+C Improved\stracing\scapabilities\sin\sfuzzcheck.
+D 2015-05-25T22:17:06.593
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 0a6ae26396ec696221021780dffbb894ff3cead7
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -651,7 +651,7 @@ F test/fuzz2.test 76dc35b32b6d6f965259508508abce75a6c4d7e1
 F test/fuzz3.test efd384b896c647b61a2c1848ba70d42aad60a7b3
 F test/fuzz_common.tcl a87dfbb88c2a6b08a38e9a070dabd129e617b45b
 F test/fuzz_malloc.test 328f70aaca63adf29b4c6f06505ed0cf57ca7c26
-F test/fuzzcheck.c f411c6be09bfec22fcc0b8757b6adae7ed8dafaf
+F test/fuzzcheck.c e751524648c8cba541ecaefe102dfb32012a447b
 F test/fuzzdata1.txt 9fceb50868e0b798160e83742bd7e44e457176a0
 F test/fuzzdata2.txt ba9b4467d7ec46cc85d32c0d031540cd727ae6ad
 F test/fuzzer1.test d4c52aaf3ef923da293a2653cfab33d02f718a36
@@ -1279,7 +1279,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P f3cd8cecf4f7aa3429e3ebc90ed31c4e8fff7bc2
-R dc13cc2996e1b64ebe5fbea1ce4d46c4
+P 12e95e3f178b89d649bc7e30db731df439ae1653
+R df913344b7d3616e49af599608d3d74e
 U drh
-Z c989f194cb51739e915cc1a31986dfac
+Z 7099e69332034b78c8602623e54bc3b8
diff --git a/manifest.uuid b/manifest.uuid
index 00aca32973..634ba41006 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-12e95e3f178b89d649bc7e30db731df439ae1653
\ No newline at end of file
+864bfdbfe7b196cc9df2136b15a28e2a0f2713cb
\ No newline at end of file
diff --git a/test/fuzzcheck.c b/test/fuzzcheck.c
index 2b18626f25..8848c93fb7 100644
--- a/test/fuzzcheck.c
+++ b/test/fuzzcheck.c
@@ -506,25 +506,11 @@ static void inmemVfsRegister(void){
   sqlite3_vfs_register(&inmemVfs, 0);
 };
 
-#ifndef SQLITE_OMIT_TRACE
-/*
-** This callback is invoked by sqlite3_trace() as each SQL statement
-** starts.
-*/
-static void traceCallback(void *NotUsed, const char *zMsg){
-  printf("TRACE: %s\n", zMsg);
-  fflush(stdout);
-}
-static void traceNoop(void *NotUsed, const char *zMsg){
-  return;
-}
-#endif
-
 /*
 ** Run multiple commands of SQL.  Similar to sqlite3_exec(), but does not
 ** stop if an error is encountered.
 */
-static void runSql(sqlite3 *db, const char *zSql){
+static void runSql(sqlite3 *db, const char *zSql, int traceFlag){
   const char *zMore;
   sqlite3_stmt *pStmt;
 
@@ -532,12 +518,24 @@ static void runSql(sqlite3 *db, const char *zSql){
     zMore = 0;
     pStmt = 0;
     sqlite3_prepare_v2(db, zSql, -1, &pStmt, &zMore);
+    if( zMore==zSql ) break;
+    if( traceFlag ){
+      const char *z = zSql;
+      int n;
+      while( z<zMore && isspace(z[0]) ) z++;
+      n = (int)(zMore - z);
+      while( n>0 && isspace(z[n-1]) ) n--;
+      if( n==0 ) break;
+      if( pStmt==0 ){
+        printf("TRACE: %.*s (error: %s)\n", n, z, sqlite3_errmsg(db));
+      }else{
+        printf("TRACE: %.*s\n", n, z);
+      }
+    }
     zSql = zMore;
     if( pStmt ){
-      while( SQLITE_ROW==sqlite3_step(pStmt) );
+      while( SQLITE_ROW==sqlite3_step(pStmt) ){}
       sqlite3_finalize(pStmt);
-    }else{
-      break;
     }
   }
 }
@@ -729,11 +727,8 @@ int main(int argc, char **argv){
         zVfs = 0;
       }
       rc = sqlite3_open_v2("main.db", &db, openFlags, zVfs);
-#ifndef SQLITE_OMIT_TRACE
-      sqlite3_trace(db, verboseFlag ? traceCallback : traceNoop, 0);
-#endif
       if( rc ) fatalError("cannot open inmem database");
-      runSql(db, (char*)pSql->a);
+      runSql(db, (char*)pSql->a, verboseFlag);
       sqlite3_close(db);
       if( sqlite3_memory_used()>0 ) fatalError("memory leak");
       reformatVfs();