tests: be strict about types

* tests/actions.at, tests/c++.at, tests/cxx-type.at,
* tests/glr-regression.at, tests/local.at, tests/torture.at,
* tests/types.at:
Pay stricter attention to types to avoid warnings.

tests/actions.at

@@ -691,13 +691,13 @@ const char *source = YY_NULLPTR;
 static
 ]AT_YYLEX_PROTOTYPE[
 {
-  static unsigned counter = 0;
+  static int counter = 0;
 
-  unsigned c = ]AT_VAL[]m4_ifval([$6], [.ival])[ = counter++;
+  int c = ]AT_VAL[]m4_ifval([$6], [.ival])[ = counter++;
   /* As in BASIC, line numbers go from 10 to 10.  */
-  ]AT_LOC_FIRST_LINE[ = ]AT_LOC_FIRST_COLUMN[ = 10 * c;
+  ]AT_LOC_FIRST_LINE[ = ]AT_LOC_FIRST_COLUMN[ = ]AT_CXX_IF([(unsigned)], [(int)])[(10 * c);
   ]AT_LOC_LAST_LINE[ = ]AT_LOC_LAST_COLUMN[ = ]AT_LOC_FIRST_LINE[ + 9;
-  assert (c <= strlen (source));
+  assert (c <= (int) strlen (source));
   if (source[c])
     fprintf (stderr, "sending: '%c'", source[c]);
   else
@@ -1684,7 +1684,7 @@ AT_DATA_GRAMMAR([[input.y]],
 %initial-action
 {
   $<ival>$ = 42;
-  $<fval>$ = 4.2;
+  $<fval>$ = 4.2f;
 }
 
 %%
@@ -1699,7 +1699,7 @@ float: UNTYPED INT
                                  yy::parser::token::INT,
                                   EOF}]],
                                [[{UNTYPED, INT, EOF}]]),
-                 [AT_VAL.ival = toknum * 10; AT_VAL.fval = toknum / 10.0;])[
+                 [AT_VAL.ival = (int) toknum * 10; AT_VAL.fval = (float) toknum / 10.0f;])[
 ]AT_MAIN_DEFINE[
 ]])
 
@@ -1816,7 +1816,7 @@ exp:
 
 %%
 ]AT_YYERROR_DEFINE[
-]AT_YYLEX_DEFINE(["bcd"], [*lvalp = (toknum + 1) * 10])[
+]AT_YYLEX_DEFINE(["bcd"], [*lvalp = (int) ((toknum + 1) * 10)])[
 ]AT_MAIN_DEFINE[
 ]])
 AT_BISON_OPTION_POPDEFS

tests/c++.at

@@ -1181,12 +1181,12 @@ yylex (yy::parser::semantic_type *lvalp)
   // 'R': call YYERROR in the action
   // 's': reduction throws.
   // 'T': call YYABORT in the action
-  switch (int res = *input++)
+  switch (char res = *input++)
   {
   case 'l':
     throw std::runtime_error ("yylex");
   default:
-    lvalp->]AT_VARIANT_IF([build (Object (res))],
+    lvalp->]AT_VARIANT_IF([build<Object> (res)],
                           [obj = new Object (res)])[;
     // Fall through.
   case 0:

tests/cxx-type.at

@@ -137,9 +137,6 @@ main (int argc, char **argv)
 
 ]AT_YYLEX_PROTOTYPE[
 {
-  char buffer[256];
-  int c;
-  unsigned i;
   static int lineNum = 1;
   static int colNum = 0;
 
@@ -152,6 +149,7 @@ main (int argc, char **argv)
 
   while (1)
     {
+      int c;
       assert (!feof (stdin));
       c = getchar ();
       switch (c)
@@ -175,11 +173,12 @@ main (int argc, char **argv)
             yylloc.first_column = colNum;]])[
             if (isalpha (c))
               {
-                i = 0;
+                char buffer[256];
+                unsigned i = 0;
 
                 do
                   {
-                    buffer[i++] = c;
+                    buffer[i++] = (char) c;
                     colNum += 1;
                     assert (i != sizeof buffer - 1);
                     c = getchar ();

tests/glr-regression.at

@@ -1000,8 +1000,7 @@ static int
 merge (YYSTYPE s1, YYSTYPE s2)
 {
   /* Not invoked. */
-  char dummy = s1.dummy + s2.dummy;
-  return dummy;
+  return s1.dummy + s2.dummy;
 }
 
 ]AT_YYERROR_DEFINE[
@@ -1119,7 +1118,7 @@ change_lookahead:
 
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["ab"],
-                 [yylval.value = res + 'A' - 'a'])[
+                 [yylval.value = (char) (res + 'A' - 'a')])[
 
 static void
 print_lookahead (char const *reduction)
@@ -1319,11 +1318,11 @@ static int
 yylex (void)
 {
   static char const input[] = "abcdddd";
-  static size_t toknum;
-  assert (toknum < sizeof input);
+  static int toknum = 0;
+  assert (toknum < (int) sizeof input);
   yylloc.first_line = yylloc.last_line = 1;
   yylloc.first_column = yylloc.last_column = toknum + 1;
-  yylval.value = input[toknum] + 'A' - 'a';
+  yylval.value = (char) (input[toknum] + 'A' - 'a');
   return input[toknum++];
 }
 
@@ -1350,8 +1349,7 @@ print_lookahead (char const *reduction)
 static char
 merge (union YYSTYPE s1, union YYSTYPE s2)
 {
-  char dummy = s1.value + s2.value;
-  return dummy;
+  return (char) (s1.value + s2.value);
 }
 
 int
@@ -1578,8 +1576,8 @@ static int
 yylex (YYSTYPE *lvalp, YYLTYPE *llocp)
 {
   static char const input[] = "ab";
-  static size_t toknum;
-  assert (toknum < sizeof input);
+  static int toknum = 0;
+  assert (toknum < (int) sizeof input);
   lvalp->dummy = 0;
   llocp->first_line = llocp->last_line = 2;
   llocp->first_column = toknum + 1;

tests/local.at

@@ -429,7 +429,7 @@ static
   res = input[toknum++];
   ]$2[;]AT_LOCATION_IF([[
   ]AT_LOC_FIRST_LINE[ = ]AT_LOC_LAST_LINE[ = 1;
-  ]AT_LOC_FIRST_COLUMN[ = ]AT_LOC_LAST_COLUMN[ = toknum;]])[
+  ]AT_LOC_FIRST_COLUMN[ = ]AT_LOC_LAST_COLUMN[ = ]AT_CXX_IF([(unsigned )], [(int)])[toknum;]])[
   return res;
 }]dnl
 ])

tests/torture.at

@@ -401,7 +401,7 @@ yylex (void)
 static int
 get_args (int argc, const char **argv)
 {
-  int res;
+  long res;
   char *endp;
   assert (argc == 2); (void) argc;
   res = strtol (argv[1], &endp, 10);
@@ -409,7 +409,7 @@ get_args (int argc, const char **argv)
   assert (0 <= res);
   assert (res <= INT_MAX);
   assert (errno != ERANGE);
-  return res;
+  return (int) res;
 }
 
 int

tests/types.at

@@ -163,7 +163,7 @@ m4_foreach([b4_skel], [[yacc.c], [glr.c], [lalr1.cc], [glr.cc]],
           [if (res)
              {
                AT_VAL.ival = (res - '0') * 10;
-               AT_VAL.fval = (res - '0') / 10.f;
+               AT_VAL.fval = (float) (res - '0') / 10.f;
              }],
           [30 0.3])