[PATCH] Limit alignment on error_mark_node variable

[H.J. Lu]

There is no need to try different alignment on variable of
error_mark_node.

OK for trunk if there is no regression?

Thanks.

H.J.
--
gcc/

        PR target/66810
        * varasm.c (align_variable): Don't try different alignment on
        variable of error_mark_node.

gcc/testsuite/

        PR target/66810
        * gcc.target/i386/pr66810.c: New test.
---
 gcc/testsuite/gcc.target/i386/pr66810.c | 10 ++++++++++
 gcc/varasm.c                            |  3 ++-
 2 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.target/i386/pr66810.c

diff --git a/gcc/testsuite/gcc.target/i386/pr66810.c 
b/gcc/testsuite/gcc.target/i386/pr66810.c
new file mode 100644
index 0000000..4778b37
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr66810.c
@@ -0,0 +1,10 @@
+/* { dg-do compile { target ia32 } } */
+/* { dg-options "-mno-sse -mno-mmx -miamcu" } */
+
+int vv;
+
+void
+i (void)
+{
+  static int a[vv]; /* { dg-error "storage size" } */
+}
diff --git a/gcc/varasm.c b/gcc/varasm.c
index b69b3a3..be33cb4 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -1016,7 +1016,8 @@ align_variable (tree decl, bool dont_output_data)
       align = MAX_OFILE_ALIGNMENT;
     }
 
-  if (! DECL_USER_ALIGN (decl))
+  /* Don't try different alignment for error_mark_node.  */
+  if (! DECL_USER_ALIGN (decl) && TREE_TYPE (decl) != error_mark_node)
     {
 #ifdef DATA_ABI_ALIGNMENT
       unsigned int data_abi_align
-- 
2.4.3