* jit.c (jit_read_code_entry): Compute alignment and offset of

	int64_t member before computing entry_size.

2 files changed, 12 insertions, 6 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7c653be..fce6934 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2012-03-22  Richard Henderson  <rth@redhat.com>
+
+	* jit.c (jit_read_code_entry): Compute alignment and offset of
+	int64_t member before computing entry_size.
+
 2012-03-22  Siva Chandra Reddy  <sivachandra@google.com>
 
 	Python scripting: Add new method Value.referenced_value to
diff --git a/gdb/jit.c b/gdb/jit.c
index 6920a82..24ab016 100644
--- a/gdb/jit.c
+++ b/gdb/jit.c
@@ -384,7 +384,13 @@ jit_read_code_entry (struct gdbarch *gdbarch,
   /* Figure out how big the entry is on the remote and how to read it.  */
   ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
   ptr_size = TYPE_LENGTH (ptr_type);
-  entry_size = 3 * ptr_size + 8;  /* Three pointers and one 64-bit int.  */
+
+  /* Figure out where the longlong value will be.  */
+  align_bytes = gdbarch_long_long_align_bit (gdbarch) / 8;
+  off = 3 * ptr_size;
+  off = (off + (align_bytes - 1)) & ~(align_bytes - 1);
+
+  entry_size = off + 8;  /* Three pointers and one 64-bit int.  */
   entry_buf = alloca (entry_size);
 
   /* Read the entry.  */
@@ -399,11 +405,6 @@ jit_read_code_entry (struct gdbarch *gdbarch,
       extract_typed_address (&entry_buf[ptr_size], ptr_type);
   code_entry->symfile_addr =
       extract_typed_address (&entry_buf[2 * ptr_size], ptr_type);
-
-  align_bytes = gdbarch_long_long_align_bit (gdbarch) / 8;
-  off = 3 * ptr_size;
-  off = (off + (align_bytes - 1)) & ~(align_bytes - 1);
-
   code_entry->symfile_size =
       extract_unsigned_integer (&entry_buf[off], 8, byte_order);
 }