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From: Adhemerval Zanella <azanella@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/azanella/clang] stdlib: Fix macro expansion producing 'defined' has undefined behavior Date: Tue, 15 Mar 2022 18:37:39 +0000 (GMT) [thread overview] Message-ID: <20220315183739.6750D3858C1F@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=79e22833260cd63fd34d273cb41f724e1c110108 commit 79e22833260cd63fd34d273cb41f724e1c110108 Author: Adhemerval Zanella <adhemerval.zanella@linaro.org> Date: Wed Mar 9 15:36:53 2022 -0300 stdlib: Fix macro expansion producing 'defined' has undefined behavior Diff: --- stdlib/fpioconst.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/stdlib/fpioconst.h b/stdlib/fpioconst.h index 1e01999941..3e185f5751 100644 --- a/stdlib/fpioconst.h +++ b/stdlib/fpioconst.h @@ -52,9 +52,12 @@ - LDBL_MIN_EXP + 2)). When _Float128 is enabled in libm and it is ABI-distinct from long double (e.g. on powerpc64le), we also need powers of 10 up to floor (log_2 (FLT128_MANT_DIG - FLT128_MIN_EXP + 2)). */ -#define FPIOCONST_HAVE_EXTENDED_RANGE \ - ((!defined __NO_LONG_DOUBLE_MATH && __LDBL_MAX_EXP__ > 1024) \ - || __HAVE_DISTINCT_FLOAT128) +#if (!defined __NO_LONG_DOUBLE_MATH && __LDBL_MAX_EXP__ > 1024) \ + || __HAVE_DISTINCT_FLOAT128 +# define FPIOCONST_HAVE_EXTENDED_RANGE 1 +#else +# define FPIOCONST_HAVE_EXTENDED_RANGE 0 +#endif #if FPIOCONST_HAVE_EXTENDED_RANGE # define FPIOCONST_POW10_ARRAY_SIZE 15
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