libctf, testsuite: fix various warnings in tests

These warnings are all off by default, but if they do fire you get
spurious ERRORs when running make check-libctf.

libctf/ChangeLog
2021-09-27  Nick Alcock  <nick.alcock@oracle.com>

	* testsuite/libctf-lookup/enum-symbol.c: Remove unused label.
	* testsuite/libctf-lookup/conflicting-type-syms.c: Remove unused
	variables.
	* testsuite/libctf-regression/pptrtab.c: Likewise.
	* testsuite/libctf-regression/type-add-unnamed-struct.c: Likewise.
	* testsuite/libctf-writable/pptrtab.c: Likewise.
	* testsuite/libctf-writable/reserialize-strtab-corruption.c:
	Likewise.
	* testsuite/libctf-regression/nonstatic-var-section-ld-r.c: Fix
	format string.
	* testsuite/libctf-regression/nonstatic-var-section-ld.c:
	Likewise.
	* testsuite/libctf-regression/nonstatic-var-section-ld.lk: Adjust.
	* testsuite/libctf-writable/symtypetab-nonlinker-writeout.c: Fix
	initializer.

libctf/ChangeLog

@@ -1,3 +1,21 @@
+2021-09-27  Nick Alcock  <nick.alcock@oracle.com>
+
+	* testsuite/libctf-lookup/enum-symbol.c: Remove unused label.
+	* testsuite/libctf-lookup/conflicting-type-syms.c: Remove unused
+	variables.
+	* testsuite/libctf-regression/pptrtab.c: Likewise.
+	* testsuite/libctf-regression/type-add-unnamed-struct.c: Likewise.
+	* testsuite/libctf-writable/pptrtab.c: Likewise.
+	* testsuite/libctf-writable/reserialize-strtab-corruption.c:
+	Likewise.
+	* testsuite/libctf-regression/nonstatic-var-section-ld-r.c: Fix
+	format string.
+	* testsuite/libctf-regression/nonstatic-var-section-ld.c:
+	Likewise.
+	* testsuite/libctf-regression/nonstatic-var-section-ld.lk: Adjust.
+	* testsuite/libctf-writable/symtypetab-nonlinker-writeout.c: Fix
+	initializer.
+
 2021-09-27  Nick Alcock  <nick.alcock@oracle.com>
 
 	* ctf-open.c (ctf_bufopen_internal): Don't complain about corrupt

libctf/testsuite/libctf-lookup/conflicting-type-syms.c

@@ -12,9 +12,6 @@ main (int argc, char *argv[])
   int err;
   ctf_id_t a, b, ignore1, ignore2, tmp;
   char *foo;
-  ctf_next_t *i = NULL;
-  const char *name;
-  int val;
 
   if (argc != 2)
     {

libctf/testsuite/libctf-lookup/enum-symbol.c

@@ -57,9 +57,6 @@ main (int argc, char *argv[])
   fprintf (stderr, "%s: Symbol re-lookup error (caching bug): %s\n", argv[0],
 	   ctf_errmsg (err));
   return 1;
- err:
-  fprintf (stderr, "Lookup failed: %s\n", ctf_errmsg (ctf_errno (fp)));
-  return 1;
  nerr:
   fprintf (stderr, "iteration failed: %s\n", ctf_errmsg (ctf_errno (fp)));
   return 1;

libctf/testsuite/libctf-regression/nonstatic-var-section-ld-r.c

@@ -31,12 +31,12 @@ main (int argc, char *argv[])
      ld -r link.  */
 
   if ((foo_type = ctf_lookup_variable (fp, "foo")) == CTF_ERR)
-    printf ("Cannot look up foo\n", ctf_errmsg (ctf_errno (fp)));
+    printf ("Cannot look up foo: %s\n", ctf_errmsg (ctf_errno (fp)));
   else
     printf ("foo is of type %lx\n", foo_type);
 
   if ((bar_type = ctf_lookup_variable (fp, "bar")) == CTF_ERR)
-    printf ("Cannot look up bar\n", ctf_errmsg (ctf_errno (fp)));
+    printf ("Cannot look up bar: %s\n", ctf_errmsg (ctf_errno (fp)));
   else
     printf ("bar is of type %lx\n", bar_type);
 

libctf/testsuite/libctf-regression/nonstatic-var-section-ld.c

@@ -30,12 +30,12 @@ main (int argc, char *argv[])
      should have been erased.  */
 
   if ((foo_type = ctf_lookup_variable (fp, "foo")) == CTF_ERR)
-    printf ("Cannot look up foo\n", ctf_errmsg (ctf_errno (fp)));
+    printf ("Cannot look up foo: %s\n", ctf_errmsg (ctf_errno (fp)));
   else
     printf ("foo is of type %lx\n", foo_type);
 
   if ((bar_type = ctf_lookup_variable (fp, "bar")) == CTF_ERR)
-    printf ("Cannot look up bar\n", ctf_errmsg (ctf_errno (fp)));
+    printf ("Cannot look up bar: %s\n", ctf_errmsg (ctf_errno (fp)));
   else
     printf ("bar is of type %lx\n", bar_type);
 

libctf/testsuite/libctf-regression/nonstatic-var-section-ld.lk

@@ -2,5 +2,5 @@
 # link: on
 # link_flags: -Wl,--ctf-variables
 foo is of type [0-9a-f]*
-Cannot look up bar
+Cannot look up bar: No type information available for symbol.
 foo missing from the data object section

libctf/testsuite/libctf-regression/pptrtab.c

@@ -10,7 +10,6 @@ main (int argc, char *argv[])
   ctf_next_t *i = NULL;
   ctf_id_t type;
   const char *arcname;
-  char *type_name;
   int err;
 
   if (argc != 2)

libctf/testsuite/libctf-regression/type-add-unnamed-struct.c

@@ -8,10 +8,8 @@ main (int argc, char *argv[])
   ctf_dict_t *fp;
   ctf_archive_t *ctf;
   ctf_dict_t *dyn;
-  ctf_next_t *i = NULL;
   ctf_id_t type;
   ctf_id_t newtype;
-  const char *memb;
   ctf_membinfo_t mi;
   const char *membs[] = { "bar", "baz", "foo", NULL };
   const char **walk;

libctf/testsuite/libctf-writable/pptrtab.c

@@ -7,7 +7,7 @@ main (int argc, char *argv[])
 {
   ctf_dict_t *pfp;
   ctf_dict_t *cfp;
-  ctf_id_t base, base2, ptr, ptr2, type, last_type;
+  ctf_id_t base, base2, ptr, type, last_type;
   ctf_encoding_t encoding = { CTF_INT_SIGNED, 0, sizeof (int) };
   ctf_encoding_t encoding2 = { CTF_INT_SIGNED, 0, sizeof (long) };
   char *type_name;

libctf/testsuite/libctf-writable/reserialize-strtab-corruption.c

@@ -13,7 +13,6 @@ main (int argc, char *argv[])
   ctf_snapshot_id_t snap;
   unsigned char *foo;
   size_t foo_size;
-  const char *bar;
   int err;
   char name[64];
 

libctf/testsuite/libctf-writable/symtypetab-nonlinker-writeout.c

@@ -174,10 +174,12 @@ try_maybe_reporting (int report)
   } *expected;
   struct ctf_symtype_expected expected_obj[] = { { "data_a", base2 },
 						 { "data_b", base3 },
-						 { "data_c", base }, NULL };
+						 { "data_c", base },
+						 { NULL, 0 } };
   struct ctf_symtype_expected expected_func[] = { { "func_a", func2 },
 						  { "func_b", func3 },
-						  { "func_c", func }, NULL };
+						  { "func_c", func },
+						  { NULL, 0 } };
   expected = expected_obj;
 
   while ((symtype = ctf_symbol_next (fp, &i, &symname, 0)) != CTF_ERR)