Many float/double errors in math/ testsuite with gcc master branch

[Romain GEISSLER via Libc-alpha <libc-alpha@sourceware.org>]

Hi,

Trying to build currently a toolchain using glibc (current master branch) + gcc (current master branch) + binutils (release branch 2.39) on Linux x86_64 yields for me 53 test failure in the math/ folder. You can find the list of these tests at the end of this mail. Trying to downgrade to the latest commit of the current release branch of gcc 12 (so gcc 12.2.1) make all my glibc test failure disappear. Checking randomly couple of the .out files of the failing tests, it seems these test don’t work at all with gcc 13, there are many errors, and it doesn’t seem it’s due to a small change of precision. Am I the only one to experiences these test failure ? In case you don’t have such errors in the same conditions, how shall I report these errors for investigation ? Just the .out file would be enough ? I don’t know anything about these math/ tests, it’s the first time I see them failing like this.

Cheers,
Romain

FAIL: math/test-double-cosh
FAIL: math/test-double-exp10
FAIL: math/test-double-expm1
FAIL: math/test-double-iseqsig
FAIL: math/test-double-lgamma
FAIL: math/test-double-log1p
FAIL: math/test-double-tgamma
FAIL: math/test-float-cosh
FAIL: math/test-float-expm1
FAIL: math/test-float-iseqsig
FAIL: math/test-float-lgamma
FAIL: math/test-float-log1p
FAIL: math/test-float-tgamma
FAIL: math/test-float128-catan
FAIL: math/test-float128-catanh
FAIL: math/test-float128-cosh
FAIL: math/test-float128-exp10
FAIL: math/test-float128-iseqsig
FAIL: math/test-float128-lgamma
FAIL: math/test-float128-log
FAIL: math/test-float128-log1p
FAIL: math/test-float128-pow
FAIL: math/test-float128-tgamma
FAIL: math/test-float128-y0
FAIL: math/test-float128-y1
FAIL: math/test-float32-cosh
FAIL: math/test-float32-expm1
FAIL: math/test-float32-iseqsig
FAIL: math/test-float32-lgamma
FAIL: math/test-float32-log1p
FAIL: math/test-float32-tgamma
FAIL: math/test-float32x-cosh
FAIL: math/test-float32x-exp10
FAIL: math/test-float32x-expm1
FAIL: math/test-float32x-iseqsig
FAIL: math/test-float32x-lgamma
FAIL: math/test-float32x-log1p
FAIL: math/test-float32x-tgamma
FAIL: math/test-float64-cosh
FAIL: math/test-float64-exp10
FAIL: math/test-float64-expm1
FAIL: math/test-float64-iseqsig
FAIL: math/test-float64-lgamma
FAIL: math/test-float64-log1p
FAIL: math/test-float64-tgamma
FAIL: math/test-float64x-cosh
FAIL: math/test-float64x-iseqsig
FAIL: math/test-float64x-lgamma
FAIL: math/test-float64x-tgamma
FAIL: math/test-ldouble-cosh
FAIL: math/test-ldouble-iseqsig
FAIL: math/test-ldouble-lgamma
FAIL: math/test-ldouble-tgamma