From 93cec6a90a54139231426aeb04a10f6d504c1ad2 Mon Sep 17 00:00:00 2001
From: hp <hp@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 2 Nov 2005 02:49:24 +0000
Subject: [PATCH] * lib/target-supports.exp
(check_effective_target_pcc_bitfield_type_matters): New proc. *
gcc.dg/bitfld-3.c: Gate on target pcc_bitfield_type_matters.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@106375 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/testsuite/ChangeLog | 4 +++
gcc/testsuite/gcc.dg/bitfld-3.c | 2 +-
gcc/testsuite/lib/target-supports.exp | 40 +++++++++++++++++++++++++++
3 files changed, 45 insertions(+), 1 deletion(-)
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 079e1e64ed1f..278324341d18 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,9 @@
2005-11-02 Hans-Peter Nilsson <hp@axis.com>
+ * lib/target-supports.exp
+ (check_effective_target_pcc_bitfield_type_matters): New proc.
+ * gcc.dg/bitfld-3.c: Gate on target pcc_bitfield_type_matters.
+
* lib/target-supports.exp (check_effective_default_packed): New proc.
* g++.dg/ext/packed3.C, g++.dg/ext/packed8.C, g++.dg/other/crash-4.C:
Gate expected errors on target ! default_packed.
diff --git a/gcc/testsuite/gcc.dg/bitfld-3.c b/gcc/testsuite/gcc.dg/bitfld-3.c
index 3843acb6e393..5207bedb8837 100644
--- a/gcc/testsuite/gcc.dg/bitfld-3.c
+++ b/gcc/testsuite/gcc.dg/bitfld-3.c
@@ -1,5 +1,5 @@
/* Test for bitfield alignment in structs and unions. */
-/* { dg-do run } */
+/* { dg-do run { target pcc_bitfield_type_matters } } */
/* { dg-options "-O2" } */
extern void abort (void);
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index eac665838f6d..3116c42c45f8 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -344,6 +344,46 @@ proc check_effective_target_default_packed { } {
return $et_default_packed_saved
}
+# Return 1 if target has PCC_BITFIELD_TYPE_MATTERS defined. See
+# documentation, where the test also comes from.
+
+proc check_effective_target_pcc_bitfield_type_matters { } {
+ global et_pcc_bitfield_type_matters_saved
+ global et_pcc_bitfield_type_matters_target_name
+
+ if { ![info exists et_pcc_bitfield_type_matters_target_name] } {
+ set et_pcc_bitfield_type_matters_target_name ""
+ }
+
+ # If the target has changed since we set the cached value, clear it.
+ set current_target [current_target_name]
+ if { $current_target != $et_pcc_bitfield_type_matters_target_name } {
+ verbose "check_effective_target_pcc_bitfield_type_matters: `$et_pcc_bitfield_type_matters_target_name'" 2
+ set et_pcc_bitfield_type_matters_target_name $current_target
+ if [info exists et_pcc_bitfield_type_matters_saved] {
+ verbose "check_effective_target_pcc_bitfield_type_matters: removing cached result" 2
+ unset et_pcc_bitfield_type_matters_saved
+ }
+ }
+
+ if [info exists et_pcc_bitfield_type_matters_saved] {
+ verbose "check_effective_target_pcc_bitfield_type_matters: using cached result" 2
+ } else {
+ verbose "check_effective_target_pcc_bitfield_type_matters: compiling source" 2
+
+ # PCC_BITFIELD_TYPE_MATTERS isn't just about unnamed or empty
+ # bitfields, but let's stick to the example code from the docs.
+ set et_pcc_bitfield_type_matters_saved \
+ [string match "" [get_compiler_messages pcc_bitfield_type_matters assembly {
+ struct foo1 { char x; char :0; char y; };
+ struct foo2 { char x; int :0; char y; };
+ int s[sizeof (struct foo1) != sizeof (struct foo2) ? 1 : -1];
+ } ]]
+ }
+ verbose "check_effective_target_pcc_bitfield_type_matters: returning $et_pcc_bitfield_type_matters_saved" 2
+ return $et_pcc_bitfield_type_matters_saved
+}
+
# Return 1 if -fpic and -fPIC are supported, as in no warnings or errors
# emitted, 0 otherwise. Whether a shared library can actually be built is
# out of scope for this test.
--
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