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[Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
- From: "redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 23 Feb 2019 01:02:32 +0000
- Subject: [Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
- Auto-submitted: auto-generated
- References: <bug-89446-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89446
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sat Feb 23 01:01:56 2019
New Revision: 269143
URL: https://gcc.gnu.org/viewcvs?rev=269143&root=gcc&view=rev
Log:
PR libstdc++/89446 fix null pointer dereference in char_traits
PR libstdc++/89446
* include/bits/char_traits.h (__constant_char_array): Check index is
in range before dereferencing.
* testsuite/21_strings/basic_string_view/operators/char/89446.cc:
New test.
Added:
branches/gcc-7-branch/libstdc++-v3/testsuite/21_strings/basic_string_view/operators/char/89446.cc
Modified:
branches/gcc-7-branch/libstdc++-v3/ChangeLog
branches/gcc-7-branch/libstdc++-v3/include/bits/char_traits.h