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[libc] Disable -NaN test on float128 systems (#70146)

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Some float128 systems (specifically the ones used for aarch64 buildbots)
don't respect signs for long double NaNs. This patch disables the printf
test that was failing due to this.
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michaelrj-google 2023-10-24 16:45:54 -07:00 committed by GitHub
parent 2e3c62b15d
commit 2282af26ea
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4
libc/test/src/stdio/sprintf_test.cpp
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@ -1008,8 +1008,12 @@ TEST_F(LlvmLibcSPrintfTest, FloatDecimalConv) {
written = LIBC_NAMESPACE::sprintf(buff, "%Lf", ld_nan);
ASSERT_STREQ_LEN(written, buff, "nan");
// Some float128 systems (specifically the ones used for aarch64 buildbots)
// don't respect signs for long double NaNs.
#if defined(SPECIAL_X86_LONG_DOUBLE) || defined(LONG_DOUBLE_IS_DOUBLE)
written = LIBC_NAMESPACE::sprintf(buff, "%LF", -ld_nan);
ASSERT_STREQ_LEN(written, buff, "-NAN");
#endif
// Length Modifier Tests.