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[PATCH] Limit alignment on error_mark_node variable
- From: "H.J. Lu" <hongjiu dot lu at intel dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Wed, 8 Jul 2015 08:32:11 -0700
- Subject: [PATCH] Limit alignment on error_mark_node variable
- Authentication-results: sourceware.org; auth=none
- Reply-to: "H.J. Lu" <hjl dot tools at gmail dot com>
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