Disable pthread assert for riscv

Let's see how far this can go in testing.

Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com>

riscv-disable-pthread.patch

@@ -1,14 +0,0 @@
-diff --git a/configure.ac b/configure.ac
-index 363afee..3276ade 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -770,6 +770,9 @@ AS_CASE(["$target_os"],
-   enable_pthread=yes
-   ])
- 
-+# Disable pthread on RISC-V until compile assert is sorted out
-+AS_CASE(["$target_cpu"],[riscv*],[enable_pthread=no],[])
-+
- dnl Checks for libraries.
- AS_CASE(["$target_os"],[*bsd*|dragonfly*],[],[ac_cv_func_daemon=no])
- 

ruby-2.6.5-disable-assert.patch

@@ -0,0 +1,13 @@
+diff --git a/thread_pthread.c b/thread_pthread.c
+index 670e917..d466d10 100644
+--- a/thread_pthread.c
++++ b/thread_pthread.c
+@@ -1992,7 +1992,7 @@ rb_sigwait_fd_put(const rb_thread_t *th, int fd)
+ 
+     VM_ASSERT(signal_self_pipe.normal[0] == fd);
+     old = ATOMIC_PTR_EXCHANGE(sigwait_th, THREAD_INVALID);
+-    if (old != th) assert(old == th);
++    /* if (old != th) assert(old == th); */
+ }
+ 
+ #ifndef HAVE_PPOLL

ruby.spec

@@ -148,8 +148,8 @@ Patch12: rubygems-3.0.3-Avoid-rdoc-hook-when-its-failed-to-load-rdoc-library.pat
 # https://github.com/ruby/openssl/pull/216
 Patch22: ruby-2.6.0-config-support-include-directive.patch
 
-# Disable pthread on Linux RISC-V (riscv64)
-Patch30: riscv-disable-pthread.patch
+# Disable pthread assert on Linux RISC-V (riscv64)
+Patch30: ruby-2.6.5-disable-assert.patch
 
 Requires: %{name}-libs%{?_isa} = %{version}-%{release}
 Suggests: rubypick
@@ -1183,7 +1183,7 @@ make check TESTS="-v $DISABLE_TESTS" MSPECOPT="-fs $MSPECOPTS"
 
 %changelog
 * Tue Jul 23 2019 David Abdurachmanov <david.abdurachmanov@sifive.com> - 2.6.5-124.0.riscv64
-- Disable pthread on RISC-V (riscv64)
+- Disable pthread assert on RISC-V (riscv64)
 
 * Tue Oct 08 2019 Slava Kardakov <ojab@ojab.ru> - 2.6.5-124
 - Update to Ruby 2.6.5.