Fix problems with the fileRead() function in the command-line shell. Fix

a harmless memory leak in the command-line shell, to make validation testing
easier.

FossilOrigin-Name: e660402e5e654b7f37ad2ce201df5cbb2b9eb9a6

manifest

@@ -1,5 +1,5 @@
-C Remove\sthe\s#ifdef\sSQLITE_DEBUG\sfrom\saround\sthe\stestcase_glob()\sroutine\nin\sthe\scommand-line\sshell.
-D 2016-09-16T18:53:42.407
+C Fix\sproblems\swith\sthe\sfileRead()\sfunction\sin\sthe\scommand-line\sshell.\s\sFix\na\sharmless\smemory\sleak\sin\sthe\scommand-line\sshell,\sto\smake\svalidation\stesting\neasier.
+D 2016-09-16T19:11:03.888
 F Makefile.in 6fd48ffcf7c2deea7499062d1f3747f986c19678
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc e1aa788e84f926e42239ee167c53f785bedacacd
@@ -387,7 +387,7 @@ F src/random.c ba2679f80ec82c4190062d756f22d0c358180696
 F src/resolve.c 3c3cf0dc719cd2a32ab5c1e10c26481dd565492e
 F src/rowset.c 7b7e7e479212e65b723bf40128c7b36dc5afdfac
 F src/select.c 244f9cc5e4662987cd2ef5c22d1b7027560f3425
-F src/shell.c 6fbbb69f5377550b9c00932077c09fde86dad0f7
+F src/shell.c 131978e994157b3925efd6fdf0e0c4ed9ab2cf91
 F src/sqlite.h.in 46ed821aeed0ba45559fb15597d9a400083154a2
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h 8648034aa702469afb553231677306cc6492a1ae
@@ -1525,7 +1525,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P a92aee5520cfaf85ae896365a7e42bdd981f828d
-R ee0cf31a4951ba6f76f2503b1e8b6ac4
+P 9885dac4b98693c4d2ed643022127f1452f19dc6
+R 88f539d71fa2571070b5d308155e3cfc
 U drh
-Z 869e33134584b23a4d21c5bff81dceaf
+Z 09ffb02e347dfbb4f5f38eddcacdd3ba

manifest.uuid

@@ -1 +1 @@
-9885dac4b98693c4d2ed643022127f1452f19dc6
+e660402e5e654b7f37ad2ce201df5cbb2b9eb9a6

src/shell.c

@@ -2252,17 +2252,21 @@ static int process_input(ShellState *p, FILE *in);
 static char *readFile(const char *zName){
   FILE *in = fopen(zName, "rb");
   long nIn;
+  size_t nRead;
   char *pBuf;
   if( in==0 ) return 0;
   fseek(in, 0, SEEK_END);
   nIn = ftell(in);
   rewind(in);
-  pBuf = sqlite3_malloc64( nIn );
+  pBuf = sqlite3_malloc64( nIn+1 );
   if( pBuf==0 ) return 0;
-  if( 1!=fread(pBuf, nIn, 1, in) ){
+  nRead = fread(pBuf, nIn, 1, in);
+  fclose(in);
+  if( nRead!=1 ){
     sqlite3_free(pBuf);
     return 0;
   }
+  pBuf[nIn] = 0;
   return pBuf;
 }
 
@@ -5203,8 +5207,13 @@ static int process_input(ShellState *p, FILE *in){
 ** Return a pathname which is the user's home directory.  A
 ** 0 return indicates an error of some kind.
 */
-static char *find_home_dir(void){
+static char *find_home_dir(int clearFlag){
   static char *home_dir = NULL;
+  if( clearFlag ){
+    free(home_dir);
+    home_dir = 0;
+    return 0;
+  }
   if( home_dir ) return home_dir;
 
 #if !defined(_WIN32) && !defined(WIN32) && !defined(_WIN32_WCE) \
@@ -5279,7 +5288,7 @@ static void process_sqliterc(
   FILE *in = NULL;
 
   if (sqliterc == NULL) {
-    home_dir = find_home_dir();
+    home_dir = find_home_dir(0);
     if( home_dir==0 ){
       raw_printf(stderr, "-- warning: cannot find home directory;"
                       " cannot read ~/.sqliterc\n");
@@ -5767,7 +5776,7 @@ int SQLITE_CDECL wmain(int argc, wchar_t **wargv){
         printf(".\nUse \".open FILENAME\" to reopen on a "
                "persistent database.\n");
       }
-      zHome = find_home_dir();
+      zHome = find_home_dir(0);
       if( zHome ){
         nHistory = strlen30(zHome) + 20;
         if( (zHistory = malloc(nHistory))!=0 ){
@@ -5791,6 +5800,7 @@ int SQLITE_CDECL wmain(int argc, wchar_t **wargv){
     sqlite3_close(data.db);
   }
   sqlite3_free(data.zFreeOnClose);
+  find_home_dir(1);
 #if !SQLITE_SHELL_IS_UTF8
   for(i=0; i<argc; i++) sqlite3_free(argv[i]);
   sqlite3_free(argv);