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From 16694079a3f415f5e5683b0afe6978810ac259b1 Mon Sep 17 00:00:00 2001
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From: David Malcolm <dmalcolm@redhat.com>
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Date: Tue, 31 Aug 2021 17:01:05 -0400
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Subject: [PATCH 08/17] testsuite: build plugins with -std=c++11
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Various testsuite plugins fail when built within DTS with e.g.:
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cc1: error: cannot load plugin ./diagnostic_plugin_test_paths.so: /builddir/build/BUILD/gcc-11.1.1-20210623/obj-x86_64-redhat-linux/x86_64-redhat-linux/libstdc++-v3/src/.libs/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by ./diagnostic_plugin_test_paths.so)
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These turn out to C++14's sized deletion
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(see https://en.cppreference.com/w/cpp/memory/new/operator_delete):
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14: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF _ZdlPvm@CXXABI_1.3.9 (4)
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48: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF _ZdlPvm@CXXABI_1.3.9
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14: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF operator delete(void*, unsigned long)@CXXABI_1.3.9 (4)
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48: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF operator delete(void*, unsigned long)@CXXABI_1.3.9
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Looks like plugin.exp is building the test plugins against the
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freshly-built libstdc++, and then trying to dynamically load them
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against the system libstdc++.
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This patch forces the use of -std=c++11 when building these test plugins,
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to sidestep the problem.
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---
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gcc/testsuite/lib/plugin-support.exp | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/gcc/testsuite/lib/plugin-support.exp b/gcc/testsuite/lib/plugin-support.exp
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index 6d651901e..9943dbb37 100644
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--- a/gcc/testsuite/lib/plugin-support.exp
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+++ b/gcc/testsuite/lib/plugin-support.exp
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@@ -103,7 +103,7 @@ proc plugin-test-execute { plugin_src plugin_tests } {
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}
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set optstr [concat $optstr "-DIN_GCC -fPIC -shared -fno-rtti -undefined dynamic_lookup"]
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} else {
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- set plug_cflags $PLUGINCFLAGS
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+ set plug_cflags "$PLUGINCFLAGS -std=c++11"
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set optstr "$includes $extra_flags -DIN_GCC -fPIC -shared -fno-rtti"
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}
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--
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2.31.1
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