Date: Wed, 13 Oct 2021 19:29:56 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 224326] double subnormals are not well printed on printing with printf (and friends) Message-ID: <bug-224326-227-Vw4W6oF9Fw@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-224326-227@https.bugs.freebsd.org/bugzilla/> References: <bug-224326-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D224326 --- Comment #8 from Mark Millard <marklmi26-fbsd@yahoo.com> --- (In reply to Luis Colorado from comment #0) On/for armv7, for compiling/linking the test program via any of: system clang (so: 12) clang13 (from devel/llvm13) gcc11 (from lang/gcc11) and then running the test, all produce the e-308 "from here on, all are incorrect" type of results. Side note: For reference, # gcc11 -O2 -pedantic -Wall subnormal_test.c subnormal_test.c: In function 'main': subnormal_test.c:10:49: warning: dereferencing type-punned pointer will bre= ak strict-aliasing rules [-Wstrict-aliasing] 10 | printf("0x%016llx %-0.17lg\n", *(unsigned long long *)&val, val); |=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20 ^~~~~~~~~~~~~~~~~~~~~~~~~~ subnormal_test.c:10:24: warning: '0' flag ignored with '-' flag in gnu_prin= tf format [-Wformat=3D] 10 | printf("0x%016llx %-0.17lg\n", *(unsigned long long *)&val, val); | ^~~~~~~~~~~~~~~~~~~~~~ and: # clang13 -O2 -pedantic -Wall subnormal_test.c subnormal_test.c:10:23: warning: flag '0' is ignored when flag '-' is prese= nt [-Wformat] printf("0x%016llx %-0.17lg\n", *(unsigned long long *)&val, val); ~~^~~~~~ --=20 You are receiving this mail because: You are the assignee for the bug.=
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