[PATCH libstdc++/66689] comp_ellint_3 and ellint_3 return garbage values

[Jonathan Wakely]

On 20/11/17 21:01 +0000, Jonathan Wakely wrote:
>On 20/11/17 21:43 +0100, Christophe Lyon wrote:
>>On 20 November 2017 at 17:02, David Edelsohn <dje.gcc@gmail.com> wrote:
>>>This patch has introduced new regressions on at least PowerPC and AArch64.
>>>
>>>FAIL: ext/special_functions/hyperg/check_value.cc execution test
>>>FAIL: tr1/5_numerical_facilities/special_functions/17_hyperg/check_value.cc
>>>execution test
>>>
>>>Thanks, David
>>
>>On AArch64 and ARM, I have also noticed
>>FAIL: special_functions/18_riemann_zeta/check_value.cc (test for excess errors)
>>UNRESOLVED: special_functions/18_riemann_zeta/check_value.cc
>>compilation failed to produce executable
>>because:
>>/libstdc++-v3/testsuite/special_functions/18_riemann_zeta/check_value.cc:
>>In function 'void test(const testcase_riemann_zeta<Ret> (&)[Num],
>>Ret)':
>>/libstdc++-v3/testsuite/special_functions/18_riemann_zeta/check_value.cc:292:
>>error: 'riemann_zeta' is not a member of 'std'
>>/libstdc++-v3/testsuite/special_functions/18_riemann_zeta/check_value.cc:292:
>>note: suggested alternative: 'remainder'
>>compiler exited with status 1
>
>The problem is that { dg-addition-options } was changed to dg-options,
>and so the first dg-options that enables the special functions is not
>used:
>
>--- a/libstdc++-v3/testsuite/special_functions/18_riemann_zeta/check_value.cc
>+++ b/libstdc++-v3/testsuite/special_functions/18_riemann_zeta/check_value.cc
>@@ -21,7 +21,7 @@
>//  riemann_zeta
>
>// This can take long on simulators, timing out the test.
>-// { dg-additional-options "-DMAX_ITERATIONS=5" { target simulator } }
>+// { dg-options "-DMAX_ITERATIONS=5" { target simulator } }
>


I have a script to check dejagnu directives, and it says:

testsuite/tr1/5_numerical_facilities/special_functions/20_riemann_zeta/check_value_neg.cc has multiple dg-options directives
testsuite/ext/special_functions/airy_ai/check_nan.cc has dg-options after dg-add-options
testsuite/ext/special_functions/hyperg/check_nan.cc has dg-options after dg-add-options
testsuite/ext/special_functions/conf_hyperg/check_nan.cc has dg-options after dg-add-options
testsuite/ext/special_functions/airy_bi/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/02_assoc_legendre/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/14_expint/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/12_ellint_2/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/09_cyl_bessel_k/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/21_sph_neumann/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/15_hermite/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/19_sph_bessel/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/05_comp_ellint_2/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/11_ellint_1/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/17_legendre/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/10_cyl_neumann/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/06_comp_ellint_3/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/06_comp_ellint_3/pr66689.cc has dg-options after dg-add-options
testsuite/special_functions/01_assoc_laguerre/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/16_laguerre/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/13_ellint_3/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/13_ellint_3/pr66689.cc has dg-options after dg-add-options
testsuite/special_functions/07_cyl_bessel_i/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/18_riemann_zeta/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/18_riemann_zeta/check_value.cc has multiple dg-options directives
testsuite/special_functions/08_cyl_bessel_j/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/04_comp_ellint_1/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/03_beta/check_nan.cc has dg-options after dg-add-options
testsuite/special_functions/20_sph_legendre/check_nan.cc has dg-options after dg-add-options

For now I'll just fix the multiple dg-options one causing the FAILs.