have_func: checking for rb_block_call()... -------------------- yes

"gcc -o conftest.exe -IC:/Ruby27-x64/include/ruby-2.7.0/x64-mingw32 -IC:/Ruby27-x64/include/ruby-2.7.0/ruby/backward -IC:/Ruby27-x64/include/ruby-2.7.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong conftest.c  -L. -LC:/Ruby27-x64/lib -L. -pipe -s -fstack-protector-strong  -m64   -lx64-msvcrt-ruby270  -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi  "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: int main(int argc, char **argv)
6: {
7:   return !!argv[argc];
8: }
/* end */

"gcc -o conftest.exe -IC:/Ruby27-x64/include/ruby-2.7.0/x64-mingw32 -IC:/Ruby27-x64/include/ruby-2.7.0/ruby/backward -IC:/Ruby27-x64/include/ruby-2.7.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong conftest.c  -L. -LC:/Ruby27-x64/lib -L. -pipe -s -fstack-protector-strong  -m64   -lx64-msvcrt-ruby270  -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi  "
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: #include <winsock2.h>
 4: #include <windows.h>
 5: 
 6: /*top*/
 7: extern int t(void);
 8: int main(int argc, char **argv)
 9: {
10:   if (argc > 1000000) {
11:     int (* volatile tp)(void)=(int (*)(void))&t;
12:     printf("%d", (*tp)());
13:   }
14: 
15:   return !!argv[argc];
16: }
17: int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_block_call; return !p; }
/* end */

--------------------

have_func: checking for rb_ary_subseq()... -------------------- yes

"gcc -o conftest.exe -IC:/Ruby27-x64/include/ruby-2.7.0/x64-mingw32 -IC:/Ruby27-x64/include/ruby-2.7.0/ruby/backward -IC:/Ruby27-x64/include/ruby-2.7.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong conftest.c  -L. -LC:/Ruby27-x64/lib -L. -pipe -s -fstack-protector-strong  -m64   -lx64-msvcrt-ruby270  -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi  "
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: #include <winsock2.h>
 4: #include <windows.h>
 5: 
 6: /*top*/
 7: extern int t(void);
 8: int main(int argc, char **argv)
 9: {
10:   if (argc > 1000000) {
11:     int (* volatile tp)(void)=(int (*)(void))&t;
12:     printf("%d", (*tp)());
13:   }
14: 
15:   return !!argv[argc];
16: }
17: int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_ary_subseq; return !p; }
/* end */

--------------------