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From b6989e3a4acda2d75612f3f3847dbea4245ff536 Mon Sep 17 00:00:00 2001
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From: David Malcolm <dmalcolm@redhat.com>
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Date: Wed, 1 Sep 2021 15:39:45 -0400
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Subject: [PATCH 11/17] Add dts.exp and use it to fix
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22_locale/messages/13631.cc
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This test was added upstream 2014-12-03:
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"re PR libstdc++/13631 (Problems in messages)"
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https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=d31008d7a0d53b431f176aad8dda5498de823122
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as part of a fix that is present in the system libstdc++.so in
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GCC 5 onwards.
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When run in DTS against such a system library, this test will fail.
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This patch introduces a dts.exp which detects the version of the
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underlying system libstdc++.so and exposes it to tests via
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-D__CXXSTDLIB_SO_VERSION__=, so that we can ifdef specific tests
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away, conditionally on the base GCC.
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---
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.../testsuite/22_locale/messages/13631.cc | 7 +++++
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libstdc++-v3/testsuite/lib/dts.exp | 31 +++++++++++++++++++
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libstdc++-v3/testsuite/lib/libstdc++.exp | 6 ++++
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3 files changed, 44 insertions(+)
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create mode 100644 libstdc++-v3/testsuite/lib/dts.exp
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diff --git a/libstdc++-v3/testsuite/22_locale/messages/13631.cc b/libstdc++-v3/testsuite/22_locale/messages/13631.cc
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index b8ae3d4f1..5b20df382 100644
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--- a/libstdc++-v3/testsuite/22_locale/messages/13631.cc
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+++ b/libstdc++-v3/testsuite/22_locale/messages/13631.cc
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@@ -50,7 +50,10 @@ void test01()
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msgs_facet.close(fake_msgs);
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msgs_facet.close(msgs);
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+ // Fixed upstream in GCC 5
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+#if __CXXSTDLIB_SO_VERSION__ >= 501000
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VERIFY( translation1 == translation2 );
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+#endif
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}
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void test02()
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@@ -72,8 +75,12 @@ void test02()
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std::wstring translation1 = msgs_facet.get(msgs, 0, 0, msgid);
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// Without a real translation this test doesn't mean anything:
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+
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+ // Fixed upstream in GCC 5
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+#if __CXXSTDLIB_SO_VERSION__ >= 501000
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VERIFY( !translation1.empty() );
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VERIFY( translation1 != msgid );
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+#endif
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// Opening another catalog was enough to show the problem, even a fake
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// catalog.
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diff --git a/libstdc++-v3/testsuite/lib/dts.exp b/libstdc++-v3/testsuite/lib/dts.exp
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new file mode 100644
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index 000000000..76ece66d3
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--- /dev/null
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+++ b/libstdc++-v3/testsuite/lib/dts.exp
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@@ -0,0 +1,31 @@
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+# For DTS testing, generate a number expressing the
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+# system version of libstdc++.so
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+#
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+# Generate a version number equivalent to
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+# #define GCC_VERSION (__GNUC__ * 10000 \
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+# + __GNUC_MINOR__ * 100 \
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+# + __GNUC_PATCHLEVEL__)
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+#
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+# For example, given an underlying version of gcc 4.8.5
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+# this function will return 408050.
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+
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+proc get_dts_base_version { } {
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+
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+ # Invoke gcc in the PATH to get at the underlying GCC version
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+ # in dotted form (e.g. "4.8.5").
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+ set dotted_version [exec gcc -dumpversion]
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+ verbose "dotted_version: '$dotted_version'" 2
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+
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+ # Extract major, minor, patchlevel
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+ regexp {([0-9]+)\.([0-9]+)\.([0-9]+)} \
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+ $dotted_version \
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+ _ major minor patchlevel
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+ verbose "major: '$major'" 2
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+ verbose "minor: '$minor'" 2
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+ verbose "patchlevel: '$patchlevel'" 2
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+
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+ set base_gcc_version [expr (($major * 10000) + ($minor * 100) + $patchlevel)]
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+ verbose "base_gcc_version: '$base_gcc_version'" 2
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+
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+ return $base_gcc_version
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+}
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diff --git a/libstdc++-v3/testsuite/lib/libstdc++.exp b/libstdc++-v3/testsuite/lib/libstdc++.exp
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index 7f9580db8..5e4b32f76 100644
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--- a/libstdc++-v3/testsuite/lib/libstdc++.exp
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+++ b/libstdc++-v3/testsuite/lib/libstdc++.exp
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@@ -58,6 +58,7 @@ load_gcc_lib timeout.exp
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load_gcc_lib timeout-dg.exp
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load_gcc_lib wrapper.exp
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load_gcc_lib target-utils.exp
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+load_lib dts.exp
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# Useful for debugging. Pass the name of a variable and the verbosity
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# threshold (number of -v's on the command line).
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@@ -323,6 +324,11 @@ proc libstdc++_init { testfile } {
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set ccflags "$cxxflags -DLOCALEDIR=\".\""
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set cxxflags "$cxxflags -DLOCALEDIR=\".\""
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+ # For DTS testing, expose the system version of libstdc++.so as
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+ # a preprocessor define.
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+ set base_gcc_version [get_dts_base_version]
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+ set cxxflags "$cxxflags -D__CXXSTDLIB_SO_VERSION__=$base_gcc_version"
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+
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# If a PCH file is available, use it. We must delay performing
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# this check until $cxx and such have been initialized because we
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# perform a test compilation. (Ideally, gcc --print-file-name would
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--
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2.31.1
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