find_executable: checking for curl-config… ——————– yes
have_func: checking for rb_thread_blocking_region()… ——————– yes
“gcc -o conftest -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong –param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -pedantic -Wall conftest.c -L. -L/usr/lib64 -L. -Wl,-z,relro -fstack-protector -rdynamic -Wl,-export-dynamic -m64 -lruby -lpthread -lrt -ldl -lcrypt -lm -lc -lcurl” checked program was:
begin
1: include “ruby.h” 2: 3: int main(int argc, char **argv) 4: { 5: return 0; 6: }
end
“gcc -o conftest -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong –param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -pedantic -Wall conftest.c -L. -L/usr/lib64 -L. -Wl,-z,relro -fstack-protector -rdynamic -Wl,-export-dynamic -m64 -lruby -lpthread -lrt -ldl -lcrypt -lm -lc -lcurl” conftest.c: In function 't': conftest.c:5:1: warning: 'rb_thread_blocking_region' is deprecated (declared at /usr/include/ruby/intern.h:841) [-Wdeprecated-declarations]
int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_thread_blocking_region; return 0; } ^
conftest.c:5:32: warning: variable 'p' set but not used [-Wunused-but-set-variable]
int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_thread_blocking_region; return 0; } ^
conftest.c: In function 'main': conftest.c:9:5: warning: format '%p' expects argument of type 'void *', but argument 2 has type 'int (*)(void)' [-Wformat=]
printf("%p", &t); ^
checked program was: /* begin */
1: #include "ruby.h" 2: 3: /*top*/ 4: extern int t(void); 5: int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_thread_blocking_region; return 0; } 6: int main(int argc, char **argv) 7: { 8: if (argc > 1000000) { 9: printf("%p", &t);
10: } 11: 12: return 0; 13: } /* end */