Date: Fri, 25 Jun 2021 18:46:25 GMT From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 97358891aa6a - stable/12 - Work around bogus old gcc "initializer element is not constant" error Message-ID: <202106251846.15PIkPv4093410@gitrepo.freebsd.org>
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The branch stable/12 has been updated by dim: URL: https://cgit.FreeBSD.org/src/commit/?id=97358891aa6aa5101bc3b0a673157538a0212e35 commit 97358891aa6aa5101bc3b0a673157538a0212e35 Author: Dimitry Andric <dim@FreeBSD.org> AuthorDate: 2021-06-25 18:42:38 +0000 Commit: Dimitry Andric <dim@FreeBSD.org> CommitDate: 2021-06-25 18:46:02 +0000 Work around bogus old gcc "initializer element is not constant" error After df3b437c1e073eb83e9a93af1c417f3ee8d0de3b, older gcc's such as 4.2.1 (still used on earlier branches for e.g. mips and powerpc) and 6.3.0 (still used for some cross-builds) started throwing bogus errors like: In file included from /workspace/src/lib/msun/src/s_llround.c:11:0: /workspace/src/lib/msun/src/s_lround.c:54:31: error: initializer element is not constant static const type dtype_min = type_min - 0.5; ^~~~~~~~ /workspace/src/lib/msun/src/s_lround.c:55:31: error: initializer element is not constant static const type dtype_max = type_max + 0.5; ^~~~~~~~ Since 'type_min' and 'type_max' are constants declared just above these lines this error is nonsensical, but older gcc's are not smart enough. Work around the error by reusing the (type)DTYPE_MIN and (type)DTYPE_MAX macros, so I can MFC this right away, unbreaking a few stable builds. (cherry picked from commit 0bcd49c13ada1461bcea85e0466811ddcb290b5e) --- lib/msun/src/s_lround.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/msun/src/s_lround.c b/lib/msun/src/s_lround.c index c4d305401ac8..1dd8e697f703 100644 --- a/lib/msun/src/s_lround.c +++ b/lib/msun/src/s_lround.c @@ -51,8 +51,8 @@ __FBSDID("$FreeBSD$"); */ static const type type_min = (type)DTYPE_MIN; static const type type_max = (type)DTYPE_MAX; -static const type dtype_min = type_min - 0.5; -static const type dtype_max = type_max + 0.5; +static const type dtype_min = (type)DTYPE_MIN - 0.5; +static const type dtype_max = (type)DTYPE_MAX + 0.5; #define INRANGE(x) (dtype_max - type_max != 0.5 || \ ((x) > dtype_min && (x) < dtype_max))
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