Rig the fuzzcheck test program so that it times out after 10 seconds in case

of an infinite loop in the test case.

FossilOrigin-Name: 659cfc9d1e9db83db171d621f248a7c2a5b183f6

manifest

@@ -1,5 +1,5 @@
-C Update\sthe\sdatabase\sfuzz\stest\scases\sto\scover\sall\srecent\sfindings.
-D 2015-06-24T13:05:18.519
+C Rig\sthe\sfuzzcheck\stest\sprogram\sso\sthat\sit\stimes\sout\safter\s10\sseconds\sin\scase\nof\san\sinfinite\sloop\sin\sthe\stest\scase.
+D 2015-06-24T13:25:34.917
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 1063c58075b7400d93326b0eb332b48a54f53025
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -657,7 +657,7 @@ 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 40f9db60546bef5a3b47858387f158f25b33dca9
+F test/fuzzcheck.c 4aa40bb9c64d25d0a196241ffe5bd99c8cc7a7fc
 F test/fuzzdata1.db 7ee3227bad0e7ccdeb08a9e6822916777073c664
 F test/fuzzdata2.db f03a420d3b822cc82e4f894ca957618fbe9c4973
 F test/fuzzdata3.db b83d0c20ae64113432c03d40c06ba473a4cb696b
@@ -1286,7 +1286,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 48bd54594752d5be3337f12c72f28d2080cb630b
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P db87664a224f44e01b85570a3f3b6ec1c81d6e0a
-R 80987d833c6ea525b9447487da2124df
+P 47ba7d96b1b91858ef1b592374839bc820719b95
+R d64b6eb4d6ad9abfcf40a6dbaad4e3c0
 U drh
-Z 3820c3951a0c18b6366e880d201a8261
+Z 7df3ede0c0593e9eda4cbc4099bb5c77

manifest.uuid

@@ -1 +1 @@
-47ba7d96b1b91858ef1b592374839bc820719b95
+659cfc9d1e9db83db171d621f248a7c2a5b183f6

test/fuzzcheck.c

@@ -71,6 +71,11 @@
 #include <ctype.h>
 #include "sqlite3.h"
 
+#ifdef __unix__
+# include <signal.h>
+# include <unistd.h>
+#endif
+
 /*
 ** Files in the virtual file system.
 */
@@ -139,6 +144,28 @@ static void fatalError(const char *zFormat, ...){
   exit(1);
 }
 
+/*
+** Timeout handler
+*/
+#ifdef __unix__
+static void timeoutHandler(int NotUsed){
+  (void)NotUsed;
+  fatalError("timeout\n");
+}
+#endif
+
+/*
+** Set the an alarm to go off after N seconds.  Disable the alarm
+** if N==0
+*/
+static void setAlarm(int N){
+#ifdef __unix__
+  alarm(N);
+#else
+  (void)N;
+#endif
+}
+
 /*
 ** Reallocate memory.  Show and error and quit if unable.
 */
@@ -682,6 +709,7 @@ int main(int argc, char **argv){
   int onlyDbid = -1;           /* --dbid */
   int nativeFlag = 0;          /* --native-vfs */
   int rebuildFlag = 0;         /* --rebuild */
+  int timeoutTest = 0;         /* undocumented --timeout-test flag */
   int runFlags = 0;            /* Flags sent to runSql() */
   char *zMsg = 0;              /* Add this message */
   int nSrcDb = 0;              /* Number of source databases */
@@ -693,6 +721,9 @@ int main(int argc, char **argv){
   int cellSzCkFlag = 0;        /* --cell-size-check */
 
   iBegin = timeOfDay();
+#ifdef __unix__
+  signal(SIGALRM, timeoutHandler);
+#endif
   g.zArgv0 = argv[0];
   zFailCode = getenv("TEST_FAILURE");
   for(i=1; i<argc; i++){
@@ -742,6 +773,12 @@ int main(int argc, char **argv){
         if( i>=argc-1 ) fatalError("missing arguments on %s", argv[i]);
         onlySqlid = atoi(argv[++i]);
       }else
+      if( strcmp(z,"timeout-test")==0 ){
+        timeoutTest = 1;
+#ifndef __unix__
+        fatalError("timeout is not available on non-unix systems");
+#endif
+      }else
       if( strcmp(z,"verbose")==0 || strcmp(z,"v")==0 ){
         quietFlag = 0;
         verboseFlag = 1;
@@ -900,7 +937,11 @@ int main(int argc, char **argv){
         rc = sqlite3_open_v2("main.db", &db, openFlags, zVfs);
         if( rc ) fatalError("cannot open inmem database");
         if( cellSzCkFlag ) runSql(db, "PRAGMA cell_size_check=ON", runFlags);
-        runSql(db, (char*)pSql->a, runFlags);
+        setAlarm(10);
+        do{
+          runSql(db, (char*)pSql->a, runFlags);
+        }while( timeoutTest );
+        setAlarm(0);
         sqlite3_close(db);
         if( sqlite3_memory_used()>0 ) fatalError("memory leak");
         reformatVfs();