Dear All,
Here's an updated patch with a test case that uses FileCheck.
Should I go ahead and commit?
-- John T.
Index: test/CodeGen/align-global-large.c
===================================================================
--- test/CodeGen/align-global-large.c (revision 0)
+++ test/CodeGen/align-global-large.c (revision 0)
@@ -0,0 +1,23 @@
+// PR13606 - Clang crashes with large alignment attribute
+// RUN: %clang -S -emit-llvm %s -o - | FileCheck %s
+
+#include <stdio.h>
+#include <stdlib.h>
+
+// CHECK: x
+// CHECK: align
+// CHECK: 1048576
+char x[4000] __attribute__((aligned(0x100000)));
+
+int
+main (int argc, char ** argv) {
+ // CHECK: y
+ // CHECK: align
+ // CHECK: 1048576
+ char y[4000] __attribute__((aligned(0x100000)));
+ printf("x is %p\n", x);
+ printf("y is %p\n", y);
+
+ return 0;
+}
+
Index: lib/CodeGen/CGValue.h
===================================================================
--- lib/CodeGen/CGValue.h (revision 161950)
+++ lib/CodeGen/CGValue.h (working copy)
@@ -128,7 +128,7 @@
// The alignment to use when accessing this lvalue. (For vector elements,
// this is the alignment of the whole vector.)
- unsigned short Alignment;
+ int64_t Alignment;
// objective-c's ivar
bool Ivar:1;
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