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* [binutils-gdb] gdb/testsuite: ignore Non-C-typedefs for gdb.cp/class2.exp
@ 2022-11-11 9:17 Bruno Larsen
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From: Bruno Larsen @ 2022-11-11 9:17 UTC (permalink / raw)
To: gdb-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9e9ffe8ee6c986e6788ad08b5635091e1f49b376
commit 9e9ffe8ee6c986e6788ad08b5635091e1f49b376
Author: Bruno Larsen <blarsen@redhat.com>
Date: Wed Sep 7 09:50:21 2022 +0200
gdb/testsuite: ignore Non-C-typedefs for gdb.cp/class2.exp
When attempting to test gdb.cp/class2.exp using Clang, it fails to
prepare with the following error:
Executing on host: clang++ -fdiagnostics-color=never -Wno-unknown-warning-option -c -g -o /home/blarsen/Documents/fsf_build/gdb/testsuite/outputs/gdb.cp/class2/class20.o /home/blarsen/Documents/fsf_build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.cp/class2.cc (timeout = 300)
builtin_spawn -ignore SIGHUP clang++ -fdiagnostics-color=never -Wno-unknown-warning-option -c -g -o /home/blarsen/Documents/fsf_build/gdb/testsuite/outputs/gdb.cp/class2/class20.o /home/blarsen/Documents/fsf_build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.cp/class2.cc
/home/blarsen/Documents/fsf_build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.cp/class2.cc:53:14: warning: anonymous non-C-compatible type given name for linkage purposes by typedef declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
typedef class {
^
Dbase
/home/blarsen/Documents/fsf_build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.cp/class2.cc:54:2: note: type is not C-compatible due to this member declaration
public:
^~~~~~~
/home/blarsen/Documents/fsf_build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.cp/class2.cc:58:3: note: type is given name 'Dbase' for linkage purposes by this typedef declaration
} Dbase;
^
1 warning generated.
gdb compile failed, /home/blarsen/Documents/fsf_build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.cp/class2.cc:53:14: warning: anonymous non-C-compatible type given name for linkage purposes by typedef declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
typedef class {
^
Dbase
/home/blarsen/Documents/fsf_build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.cp/class2.cc:54:2: note: type is not C-compatible due to this member declaration
public:
^~~~~~~
/home/blarsen/Documents/fsf_build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.cp/class2.cc:58:3: note: type is given name 'Dbase' for linkage purposes by this typedef declaration
} Dbase;
^
1 warning generated.
UNTESTED: gdb.cp/class2.exp: failed to prepare
This can be silenced by adding -Wno-non-c-typedef-for-linkage for Clang
11 or later. The test shows no failures with this change.
Approved-by: Tom Tromey <tom@tromey.com>
Diff:
---
gdb/testsuite/gdb.cp/class2.exp | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/gdb/testsuite/gdb.cp/class2.exp b/gdb/testsuite/gdb.cp/class2.exp
index 32f9dfc18a5..cc192b6de64 100644
--- a/gdb/testsuite/gdb.cp/class2.exp
+++ b/gdb/testsuite/gdb.cp/class2.exp
@@ -18,7 +18,14 @@ if { [skip_cplus_tests] } { return }
standard_testfile .cc
-if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
+set flags [list debug c++]
+# When using recent Clangs, this test fails to compile without this warning
+# being disabled. However, older Clangs fail to recognize the flag.
+if { [gcc_major_version "clang-*" "c++"] > 10 } {
+ lappend flags additional_flags=-Wno-non-c-typedef-for-linkage
+}
+
+if {[prepare_for_testing "failed to prepare" $testfile $srcfile $flags]} {
return -1
}
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