diff options
| author | Jonathan Wakely <jwakely@redhat.com> | 2020-10-08 15:14:58 +0100 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2020-10-08 15:24:21 +0100 |
| commit | b2a96bf9dce41ee777b1669e4a8b4c6df3ff3613 (patch) | |
| tree | 1232ac1c462cbd462331ca81914b23cc948acbf7 /libstdc++-v3/testsuite/26_numerics | |
| parent | 5a448362da6133c3b16ffdb0c795b657af7fa5a4 (diff) | |
libstdc++: Add assertions for preconditions in sampling distributions [PR 82584]
These three distributions all require 0 < S where S is the sum of the
weights. When the sum is zero there's an undefined FP division by zero.
Add assertions to help users diagnose the problem.
libstdc++-v3/ChangeLog:
PR libstdc++/82584
* include/bits/random.tcc
(discrete_distribution::param_type::_M_initialize)
(piecewise_constant_distribution::param_type::_M_initialize)
(piecewise_linear_distribution::param_type::_M_initialize):
Add assertions for positive sums..
* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
line.
Diffstat (limited to 'libstdc++-v3/testsuite/26_numerics')
| -rw-r--r-- | libstdc++-v3/testsuite/26_numerics/random/pr60037-neg.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libstdc++-v3/testsuite/26_numerics/random/pr60037-neg.cc b/libstdc++-v3/testsuite/26_numerics/random/pr60037-neg.cc index 139abbb3051..9cffc3d06f9 100644 --- a/libstdc++-v3/testsuite/26_numerics/random/pr60037-neg.cc +++ b/libstdc++-v3/testsuite/26_numerics/random/pr60037-neg.cc @@ -12,4 +12,4 @@ auto x = std::generate_canonical<std::size_t, // { dg-error "static assertion failed: template argument must be a floating point type" "" { target *-*-* } 167 } -// { dg-error "static assertion failed: template argument must be a floating point type" "" { target *-*-* } 3281 } +// { dg-error "static assertion failed: template argument must be a floating point type" "" { target *-*-* } 3284 } |