Fix linker tests to compile with gcc-12.

PR 21964
	* testsuite/ld-elf/pr21964-1a.c: Fix array comparisons.
	* testsuite/ld-elf/pr21964-1b.c: Likewise.
	* testsuite/ld-elf/pr21964-1c.c: Likewise.
	* testsuite/ld-elf/pr21964-2a.c: Likewise.
	* testsuite/ld-elf/pr21964-2b.c: Likewise.
	* testsuite/ld-elf/pr21964-3a.c: Likewise.

ld/ChangeLog

@@ -1,3 +1,13 @@
+2022-03-01  Nick Clifton  <nickc@redhat.com>
+
+	PR 21964
+	* testsuite/ld-elf/pr21964-1a.c: Fix array comparisons.
+	* testsuite/ld-elf/pr21964-1b.c: Likewise.
+	* testsuite/ld-elf/pr21964-1c.c: Likewise.
+	* testsuite/ld-elf/pr21964-2a.c: Likewise.
+	* testsuite/ld-elf/pr21964-2b.c: Likewise.
+	* testsuite/ld-elf/pr21964-3a.c: Likewise.
+
 2022-02-17  Roland McGrath  <mcgrathr@google.com>
 
 	* ld.texi (Output Section Type): Fix typo in @code syntax.

ld/testsuite/ld-elf/pr21964-1a.c

@@ -4,7 +4,7 @@ int
 foo1 (void)
 {
   static int my_var __attribute__((used, section("__verbose"))) = 5;
-  if (__start___verbose == __stop___verbose
+  if (& __start___verbose[0] == & __stop___verbose[0]
       || __start___verbose[0] != 5)
     return -1;
   else

ld/testsuite/ld-elf/pr21964-1b.c

@@ -4,7 +4,7 @@ int
 foo2 (void)
 {
   static int my_var __attribute__((used, section("__verbose"))) = 10;
-  if (__start___verbose == __stop___verbose
+  if (& __start___verbose[0] == & __stop___verbose[0]
       || __start___verbose[0] != 10)
     return -1;
   else

ld/testsuite/ld-elf/pr21964-1c.c

@@ -9,7 +9,7 @@ static int my_var __attribute__((used, section("__verbose"))) = 6;
 int
 bar (void)
 {
-  if (__start___verbose == __stop___verbose)
+  if (& __start___verbose[0] == & __stop___verbose[0])
     return -1;
 
   if (__start___verbose[0] != 6)

ld/testsuite/ld-elf/pr21964-2a.c

@@ -4,7 +4,7 @@ int
 foo1 (void)
 {
   static int my_var __attribute__((used, section("__verbose"))) = 5;
-  if (__start___verbose == __stop___verbose
+  if (& __start___verbose[0] == & __stop___verbose[0]
       && __start___verbose[0] != 5)
     return -1;
   else

ld/testsuite/ld-elf/pr21964-2b.c

@@ -4,7 +4,7 @@ int
 foo2 (void)
 {
   static int my_var __attribute__((used, section("__verbose"))) = 10;
-  if (__start___verbose == __stop___verbose
+  if (& __start___verbose[0] == & __stop___verbose[0]
       || __start___verbose[0] != 10)
     return -1;
   else

ld/testsuite/ld-elf/pr21964-3a.c

@@ -3,7 +3,7 @@ extern int __stop___verbose[];
 int
 foo3 (void)
 {
-  if (__start___verbose == __stop___verbose
+  if (& __start___verbose[0] == & __stop___verbose[0]
       || __start___verbose[0] != 6)
     return -1;
   else