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testsuite: C++14 vs. C++17 struct-layout-1.exp testing with ALT_CXX_UNDER_TEST [PR94383]

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> 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.

2020-04-24  Jakub Jelinek  <jakub@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.
This commit is contained in:
Jakub Jelinek 2020-04-24 19:14:27 +02:00
parent 01f5d5e8f9
commit 9407f0c32b
2 changed files with 20 additions and 1 deletions
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7
gcc/testsuite/ChangeLog
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@ -1,3 +1,10 @@
2020-04-24 Jakub Jelinek <jakub@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.
2020-04-24 Andrew Stubbs <ams@codesourcery.com>
* lib/target-supports.exp (available_vector_sizes): Add amdgcn.

14
gcc/testsuite/g++.dg/compat/struct-layout-1.exp
View File

@ -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 {