Date: Thu, 22 Apr 2021 11:08:24 GMT From: Alex Richardson <arichardson@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 6dd6c03efb9e - stable/13 - lib/msun: Fix x86 GCC6 build after 221622ec0c8e184 Message-ID: <202104221108.13MB8Orr088518@gitrepo.freebsd.org>
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The branch stable/13 has been updated by arichardson: URL: https://cgit.FreeBSD.org/src/commit/?id=6dd6c03efb9ecc214b0e00fcd32a1bb8887abc0f commit 6dd6c03efb9ecc214b0e00fcd32a1bb8887abc0f Author: Alex Richardson <arichardson@FreeBSD.org> AuthorDate: 2021-03-12 18:44:42 +0000 Commit: Alex Richardson <arichardson@FreeBSD.org> CommitDate: 2021-04-22 09:42:54 +0000 lib/msun: Fix x86 GCC6 build after 221622ec0c8e184 Apparently GCC only supports arithmetic expressions that use static const variables in initializers starting with GCC8. To keep older versions happy use a macro instead. Fixes: 221622ec0c ("lib/msun: Avoid FE_INEXACT for x86 log2l/log10l") Reported by: Jenkins Reviewed By: imp Differential Revision: https://reviews.freebsd.org/D29233 (cherry picked from commit 05eac56a0432d07acd7f159125855437a4dd6259) --- lib/msun/ld80/s_logl.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/lib/msun/ld80/s_logl.c b/lib/msun/ld80/s_logl.c index d787b953fedb..c74519cafd69 100644 --- a/lib/msun/ld80/s_logl.c +++ b/lib/msun/ld80/s_logl.c @@ -674,14 +674,14 @@ logl(long double x) RETURNSPI(&r); } -static const double -invln10_hi = 4.3429448190317999e-1, /* 0x1bcb7b1526e000.0p-54 */ -invln10_lo = 7.1842412889749798e-14, /* 0x1438ca9aadd558.0p-96 */ -invln10_lo_plus_hi = invln10_lo + invln10_hi, -invln2_hi = 1.4426950408887933e0, /* 0x171547652b8000.0p-52 */ -invln2_lo = 1.7010652264631490e-13, /* 0x17f0bbbe87fed0.0p-95 */ -invln2_lo_plus_hi = invln2_lo + invln2_hi; - +/* Use macros since GCC < 8 rejects static const expressions in initializers. */ +#define invln10_hi 4.3429448190317999e-1 /* 0x1bcb7b1526e000.0p-54 */ +#define invln10_lo 7.1842412889749798e-14 /* 0x1438ca9aadd558.0p-96 */ +#define invln2_hi 1.4426950408887933e0 /* 0x171547652b8000.0p-52 */ +#define invln2_lo 1.7010652264631490e-13 /* 0x17f0bbbe87fed0.0p-95 */ +/* Let the compiler pre-calculate this sum to avoid FE_INEXACT at run time. */ +static const double invln10_lo_plus_hi = invln10_lo + invln10_hi; +static const double invln2_lo_plus_hi = invln2_lo + invln2_hi; long double log10l(long double x)
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