fix debug code in Perl_malloc() (from Ilya Zakharevich)

p4raw-id: //depot/perl@5010

diff --git a/malloc.c b/malloc.c
index 5e85661..664fbe7 100644 (file)
--- a/malloc.c
+++ b/malloc.c
@@ -1034,8 +1034,15 @@ Perl_malloc(register size_t nbytes)
        if ((PTR2UV(p)) & (MEM_ALIGNBYTES - 1)) {
            dTHXo;
            PerlIO_printf(PerlIO_stderr(),
-                         "Corrupt malloc ptr 0x%lx at 0x%"UVxf"\n",
-                         (unsigned long)*((int*)p),PTR2UV(p));
+                         "Unaligned pointer in the free chain 0x%"UVxf"\n",
+                         PTR2UV(p));
+       }
+       if ((PTR2UV(p->ov_next)) & (MEM_ALIGNBYTES - 1)) {
+           dTHXo;
+           PerlIO_printf(PerlIO_stderr(),
+                         "Unaligned `next' pointer in the free "
+                         "chain 0x"UVxf" at 0x%"UVxf"\n",
+                         PTR2UV(p->ov_next), PTR2UV(p));
        }
 #endif
        nextf[bucket] = p->ov_next;