Fix libstdc++ assert when performing tab completion; build must be made
with -D_GLIBCXX_DEBUG flag in order to trigger assert (RHBZ 1912985, Kevin Buettner).
This commit is contained in:
Kevin Buettner
parent
ff1b575a1d
commit
ce991fb7c0
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@ -37,6 +37,10 @@ Patch009: gdb-6.3-test-movedir-20050125.patch
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#=fedoratest
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Patch010: gdb-6.3-threaded-watchpoints2-20050225.patch
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# Notify observers that the inferior has been created
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#=fedoratest
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Patch011: gdb-6.3-inferior-notification-20050721.patch
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# Verify printing of inherited members test
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#=fedoratest
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Patch012: gdb-6.3-inheritancetest-20050726.patch
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@ -98,6 +102,10 @@ Patch025: gdb-6.6-testsuite-timeouts.patch
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#=fedoratest
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Patch026: gdb-6.6-bz237572-ppc-atomic-sequence-test.patch
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# Test kernel VDSO decoding while attaching to an i386 process.
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#=fedoratest
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Patch027: gdb-6.3-attach-see-vdso-test.patch
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# Test leftover zombie process (BZ 243845).
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#=fedoratest
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Patch028: gdb-6.5-bz243845-stale-testing-zombie-test.patch
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@ -131,6 +139,14 @@ Patch034: gdb-6.7-testsuite-stable-results.patch
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#=fedoratest
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Patch035: gdb-6.5-ia64-libunwind-leak-test.patch
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# Test hiding unexpected breakpoints on intentional step commands.
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#=fedoratest
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Patch036: gdb-6.5-missed-trap-on-step-test.patch
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# Test gcore memory and time requirements for large inferiors.
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#=fedoratest
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Patch037: gdb-6.5-gcore-buffer-limit-test.patch
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# Test GCORE for shmid 0 shared memory mappings.
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#=fedoratest: But it is broken anyway, sometimes the case being tested is not reproducible.
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Patch038: gdb-6.3-mapping-zero-inode-test.patch
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@ -383,3 +399,7 @@ Patch097: gdb-rhbz1553104-s390x-arch12-test.patch
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# =fedoratest
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Patch098: gdb-rhbz1905996-fix-off-by-one-error-in-ada_fold_name.patch
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# Backport fix for libstdc++ assert when performing tab completion
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# (RH BZ 1912985).
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Patch099: gdb-rhbz1912985-libstdc++-assert.patch
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%patch008 -p1
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@ -96,3 +96,4 @@ gdb-archer.patch
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gdb-vla-intel-fix-print-char-array.patch
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gdb-rhbz1553104-s390x-arch12-test.patch
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gdb-rhbz1905996-fix-off-by-one-error-in-ada_fold_name.patch
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gdb-rhbz1912985-libstdc++-assert.patch
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@ -0,0 +1,64 @@
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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: Kevin Buettner <kevinb@redhat.com>
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Date: Wed, 17 Feb 2021 17:58:54 -0700
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Subject: gdb-rhbz1912985-libstdc++-assert.patch
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;; Backport fix for libstdc++ assert when performing tab completion
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;; (RH BZ 1912985).
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Fix completion related libstdc++ assert when using -D_GLIBCXX_DEBUG
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This commit fixes a libstdc++ assertion failure encountered when
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running gdb.base/completion.exp. In order to see this problem,
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GDB must be built with the follow CFLAGS and CXXFLAGS as part
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of the configure line:
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CFLAGS='-D_GLIBCXX_DEBUG' CXXFLAGS='-D_GLIBCXX_DEBUG'
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(Also, this problem was encountered using Fedora rawhide. It might
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not be reproducible in Fedora versions prior to Fedora 34.)
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Using the gdb.base/completion.exp test program, the problem can be
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observed as follows:
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[kev@rawhide-1 gdb]$ ./gdb -q testsuite/outputs/gdb.base/completion/completion
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Reading symbols from testsuite/outputs/gdb.base/completion/completion...
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(gdb) start
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Temporary breakpoint 1 at 0x401179: file ../../worktree-master/gdb/testsuite/gdb.base/break.c, line 43.
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Starting program: testsuite/outputs/gdb.base/completion/completion
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Temporary breakpoint 1, main (argc=1, argv=0x7fffffffd718, envp=0x7fffffffd728) at ../../worktree-master/gdb/testsuite/gdb.base/break.c:43
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43 if (argc == 12345) { /* an unlikely value < 2^16, in case uninited */ /* set breakpoint 6 here */
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(gdb) p <TAB>/usr/include/c++/11/string_view:211: constexpr const value_type& std::basic_string_view<_CharT, _Traits>::operator[](std::basic_string_view<_CharT, _Traits>::size_type) const [with _CharT = char; _Traits = std::char_traits<char>; std::basic_string_view<_CharT, _Traits>::const_reference = const char&; std::basic_string_view<_CharT, _Traits>::size_type = long unsigned int]: Assertion '__pos < this->_M_len' failed.
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Aborted (core dumped)
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(Note that I added "<TAB>" to make it clear where the tab key was
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pressed.)
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gdb/ChangeLog:
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* ada-lang.c (ada_fold_name): Check for non-empty string prior
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to accessing it.
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(ada_lookup_name_info): Likewise.
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diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
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--- a/gdb/ada-lang.c
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+++ b/gdb/ada-lang.c
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@@ -997,7 +997,7 @@ ada_fold_name (gdb::string_view name)
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int len = name.size ();
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GROW_VECT (fold_buffer, fold_buffer_size, len + 1);
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- if (name[0] == '\'')
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+ if (!name.empty () && name[0] == '\'')
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{
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strncpy (fold_buffer, name.data () + 1, len - 2);
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fold_buffer[len - 2] = '\000';
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@@ -13592,7 +13592,7 @@ ada_lookup_name_info::ada_lookup_name_info (const lookup_name_info &lookup_name)
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{
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gdb::string_view user_name = lookup_name.name ();
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- if (user_name[0] == '<')
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+ if (!user_name.empty () && user_name[0] == '<')
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{
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if (user_name.back () == '>')
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m_encoded_name
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7
gdb.spec
7
gdb.spec
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@ -37,7 +37,7 @@ Version: 10.1
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# The release always contains a leading reserved number, start it at 1.
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# `upstream' is not a part of `name' to stay fully rpm dependencies compatible for the testing.
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Release: 5%{?dist}
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Release: 6%{?dist}
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License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ and GPLv2+ with exceptions and GPL+ and LGPLv2+ and LGPLv3+ and BSD and Public Domain and GFDL
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# Do not provide URL for snapshots as the file lasts there only for 2 days.
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@ -1195,6 +1195,11 @@ fi
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%endif
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%changelog
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* Thu Feb 11 2021 Kevin Buettner <kevinb@redhat.com> - 10.1-6
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- Fix libstdc++ assert when performing tab completion; build must be made
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with -D_GLIBCXX_DEBUG flag in order to trigger assert (RHBZ 1912985,
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Kevin Buettner).
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* Thu Feb 11 2021 Keith Seitz
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- Disable Guile support for RHEL9+.
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