Hi!
On Tue, Apr 21, 2020 at 11:57:02AM +0200, Jakub Jelinek wrote:
> I haven't added (yet) checks if the alternate compiler does support these
> options (I think that can be done incrementally), so for now this testing is
> done only if the alternate compiler is not used.
This patch does that, so now when testing against not too old compiler
it can do the -std=c++14 vs. -std=c++17 testing also between under test and
alt compilers.
Tested on x86_64-linux, without ALT_CXX_UNDER_TEST (all tests still used),
with ALT_CXX_UNDER_TEST=g++ (all tests still used too), and after tweaking
it to test -std=c++20 instead of -std=c++17 that my system g++ doesn't
support, where it only used tests before *_32* and bootstrapped/regtested
on powerpc64{,le}-linux, ok for trunk?
2020-04-23 Jakub Jelinek <ja...@redhat.com>
PR c++/94383
* g++.dg/compat/struct-layout-1.exp: Use the -std=c++14 vs. -std=c++17
ABI compatibility testing even with ALT_CXX_UNDER_TEST, as long as
that compiler accepts -std=c++14 and -std=c++17 options.
--- gcc/testsuite/g++.dg/compat/struct-layout-1.exp.jj 2020-04-21
17:07:52.004248153 +0200
+++ gcc/testsuite/g++.dg/compat/struct-layout-1.exp 2020-04-23
15:56:16.057326947 +0200
@@ -142,7 +142,19 @@ if { $status == 0 } then {
file delete -force $tstobjdir
file mkdir $tstobjdir
set generator_args "-s $srcdir/$subdir -d $tstobjdir"
- if { $use_alt == 0 } then {
+ set test_cxx14_vs_cxx17 1
+ if { $use_alt != 0 } then {
+ compat-use-alt-compiler
+ if { [check_no_compiler_messages_nocache compat_alt_has_cxx14 object {
+ int dummy; } "-std=c++14"] == 0 } {
+ set test_cxx14_vs_cxx17 0
+ } elseif { [check_no_compiler_messages_nocache compat_alt_has_cxx17
object {
+ int dummy; } "-std=c++17"] == 0 } {
+ set test_cxx14_vs_cxx17 0
+ }
+ compat-use-tst-compiler
+ }
+ if { $test_cxx14_vs_cxx17 != 0 } then {
set generator_args "$generator_args -c"
}
if [info exists env(RUN_ALL_COMPAT_TESTS) ] then {
Jakub
