[testsuite] Fix multiple definitions of _init

[Oleg Endo]

Hi,

When running the testsuite on a sh-elf configuration, some test cases
fail due to multiple definitions of the function '_init'.  This is
because on sh-elf every function is automatically prefixed with a '_'
char.  When defining a C function 'init' in some code, the actual name
becomes '_init' and this conflicts with the _init function in libgcc
(crti.S).  While the behavior of adding the '_' prefix is debatable, the
testsuite failures can be easily fixed by the attached patch.
Is this OK for trunk?

Cheers,
Oleg

gcc/testsuite/ChangeLog:

        * gcc.c-torture/execute/20120919-1.c (init): Rename to initt.
        * gcc.c-torture/execute/pr42248.c: Likewise.
        * gcc.c-torture/execute/pr53688.c: Likewise.
        * gcc.c-torture/execute/pr42614.c: Likewise.

Index: gcc/testsuite/gcc.c-torture/execute/20120919-1.c
===================================================================
--- gcc/testsuite/gcc.c-torture/execute/20120919-1.c	(revision 218199)
+++ gcc/testsuite/gcc.c-torture/execute/20120919-1.c	(working copy)
@@ -9,9 +9,9 @@
 
 extern void abort(void);
 
-void init (int *n, int *dummy) __attribute__ ((noinline,noclone));
+void initt (int *n, int *dummy) __attribute__ ((noinline,noclone));
 
-void init (int *n, int *dummy)
+void initt (int *n, int *dummy)
 {
   if(0 == n) dummy[0] = 0;
 }
@@ -20,7 +20,7 @@
 {
   int dummy[1532];
   int i = -1, n = 1, s = 0;
-  init (&n, dummy);
+  initt (&n, dummy);
   while (i < n) {
     if (i == 0) {
       if (pd[i] > 0) {
Index: gcc/testsuite/gcc.c-torture/execute/pr42248.c
===================================================================
--- gcc/testsuite/gcc.c-torture/execute/pr42248.c	(revision 218199)
+++ gcc/testsuite/gcc.c-torture/execute/pr42248.c	(working copy)
@@ -12,7 +12,7 @@
 }
 
 void
-init (Scf10 *p, _Complex double y)
+initt (Scf10 *p, _Complex double y)
 {
   p->a = y;
 }
@@ -20,7 +20,7 @@
 int
 main ()
 {
-  init (&g1s, (_Complex double)1);
+  initt (&g1s, (_Complex double)1);
   check (g1s, (_Complex double)1);
 
   return 0;
Index: gcc/testsuite/gcc.c-torture/execute/pr53688.c
===================================================================
--- gcc/testsuite/gcc.c-torture/execute/pr53688.c	(revision 218199)
+++ gcc/testsuite/gcc.c-torture/execute/pr53688.c	(working copy)
@@ -5,7 +5,7 @@
 } p;
 
 void __attribute__((noinline,noclone))
-init()
+initt()
 {
   __builtin_memcpy (p.part1, "FOOBARFOO", sizeof (p.part1));
   __builtin_memcpy (p.part2, "SPEC CPU", sizeof (p.part2));
@@ -15,7 +15,7 @@
 {
   char *x;
   int c;
-  init();
+  initt();
   __builtin_memcpy (&headline[0], p.part1, 9);
   c = 9;
   x = &headline[0];
Index: gcc/testsuite/gcc.c-torture/execute/pr42614.c
===================================================================
--- gcc/testsuite/gcc.c-torture/execute/pr42614.c	(revision 218199)
+++ gcc/testsuite/gcc.c-torture/execute/pr42614.c	(working copy)
@@ -12,7 +12,7 @@
   TEntry data[2];
 } TTable;
 
-TTable *init ()
+TTable *initt ()
 {
   return malloc(sizeof(TTable));
 }
@@ -54,7 +54,7 @@
 main ()
 {
   unsigned char index = 0;
-  TTable *table_p = init();
+  TTable *table_p = initt();
   TEntry work;
 
   inlined_wrong (&(table_p->data[1]), 1);