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From: Hans-Peter Nilsson <hp@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r12-8035] libstdc++-v3 expected: Correct minimal-size test in requirements.cc Date: Thu, 7 Apr 2022 02:19:51 +0000 (GMT) [thread overview] Message-ID: <20220407021951.755673858C53@sourceware.org> (raw) https://gcc.gnu.org/g:2dda1094a7c195398c3f2b31519f427ac7d97956 commit r12-8035-g2dda1094a7c195398c3f2b31519f427ac7d97956 Author: Hans-Peter Nilsson <hp@axis.com> Date: Thu Apr 7 04:19:21 2022 +0200 libstdc++-v3 expected: Correct minimal-size test in requirements.cc Without this, for a target where alignment and structure-sizes are by default byte-aligned, such as cris-elf, you'll see, in libstdc++.log: /X/gcc/libstdc++-v3/testsuite/20_util/expected/requirements.cc:127: error: static assertion failed /X/gcc/libstdc++-v3/testsuite/20_util/expected/requirements.cc:127: note: the comparison reduces to '(5 == 2)' compiler exited with status 1 FAIL: 20_util/expected/requirements.cc (test for excess errors) Excess errors: /X/gcc/libstdc++-v3/testsuite/20_util/expected/requirements.cc:127: error: static assertion failed The intent of that line is to check that the object is not larger than necessary. libstdc++-v3/: * testsuite/20_util/expected/requirements.cc: Correct minimal-size test. Diff: --- libstdc++-v3/testsuite/20_util/expected/requirements.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libstdc++-v3/testsuite/20_util/expected/requirements.cc b/libstdc++-v3/testsuite/20_util/expected/requirements.cc index 485aa338679..aae7059ef71 100644 --- a/libstdc++-v3/testsuite/20_util/expected/requirements.cc +++ b/libstdc++-v3/testsuite/20_util/expected/requirements.cc @@ -124,6 +124,6 @@ static_assert( move_assignable< void, G > ); // QoI properties static_assert( sizeof(std::expected<char, unsigned char>) == 2 ); static_assert( sizeof(std::expected<void, char>) == 2 ); -static_assert( sizeof(std::expected<void*, char>) == 2 * __alignof(void*) ); +static_assert( sizeof(std::expected<void*, char>) == sizeof(void*) + __alignof(void*) ); static_assert( alignof(std::expected<void, char>) == 1 ); static_assert( alignof(std::expected<void*, char>) == alignof(void*) );
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