Bug #13830
Updated by graywolf (Gray Wolf) about 7 years ago
I think I've found bug in `rb_scan_args` function. call (probably in `rb_scan_args_set`?). This is my testing script: require_relative 'test' Test.test "server", "host", "a", "b", license: "lic" And this is implementation of my module: #include <ruby.h> VALUE module = Qnil; VALUE method_test(int argc, VALUE * argv, VALUE self); void Init_test(void) { module = rb_define_module("Test"); rb_define_singleton_method(module, "test", method_test, -1); } VALUE method_test(int argc, VALUE * argv, VALUE self) { VALUE name, host, others, hash; name = Qnil; host = Qnil; others = Qnil; hash = Qnil; rb_scan_args(argc, argv, "11*:", &name, &host, &others, &hash); rb_p(name); rb_p(host); rb_p(others); rb_p(hash); return Qnil; } However, when I run it the result differs based on optimization level. `-O0`: $ ~/ruby_install_O0/bin/ruby do_test.rb "server" "host" ["a", "b"] {:license=>"lic"} `-O1`: "server" "host" ["a", "b", {:license=>"lic"}] nil `-O2`: "server" "host" ["a", "b", {:license=>"lic"}] nil `-O3`: "server" "host" ["a", "b", {:license=>"lic"}] nil Configure outputs: `-O0`: --- Configuration summary for ruby version 2.5.0 * Installation prefix: /home/wolf/ruby_install_O0 * exec prefix: ${prefix} * arch: x86_64-linux * site arch: ${arch} * RUBY_BASE_NAME: ruby * ruby lib prefix: ${libdir}/${RUBY_BASE_NAME} * site libraries path: ${rubylibprefix}/${sitearch} * vendor path: ${rubylibprefix}/vendor_ruby * target OS: linux * compiler: gcc * with pthread: yes * enable shared libs: no * dynamic library ext: so * CFLAGS: ${optflags} ${debugflags} ${warnflags} * LDFLAGS: -L. -fstack-protector -rdynamic \ -Wl,-export-dynamic * optflags: -O0 -fno-fast-math * debugflags: -ggdb3 -DRUBY_DEVEL=1 * warnflags: -Wall -Wextra -Wno-unused-parameter \ -Wno-parentheses -Wno-long-long \ -Wno-missing-field-initializers \ -Wno-tautological-compare \ -Wno-parentheses-equality \ -Wno-constant-logical-operand -Wno-self-assign \ -Wunused-variable -Werror=implicit-int \ -Werror=pointer-arith -Werror=write-strings \ -Werror=declaration-after-statement \ -Werror=implicit-function-declaration \ -Werror=deprecated-declarations \ -Wno-packed-bitfield-compat \ -Wsuggest-attribute=noreturn \ -Wsuggest-attribute=format \ -Wimplicit-fallthrough=0 * strip command: strip -S -x * install doc: yes * man page type: doc --- `-O1`: --- Configuration summary for ruby version 2.5.0 * Installation prefix: /home/wolf/ruby_install_O1 * exec prefix: ${prefix} * arch: x86_64-linux * site arch: ${arch} * RUBY_BASE_NAME: ruby * ruby lib prefix: ${libdir}/${RUBY_BASE_NAME} * site libraries path: ${rubylibprefix}/${sitearch} * vendor path: ${rubylibprefix}/vendor_ruby * target OS: linux * compiler: gcc * with pthread: yes * enable shared libs: no * dynamic library ext: so * CFLAGS: ${optflags} ${debugflags} ${warnflags} * LDFLAGS: -L. -fstack-protector -rdynamic \ -Wl,-export-dynamic * optflags: -O1 -fno-fast-math * debugflags: -ggdb3 -DRUBY_DEVEL=1 * warnflags: -Wall -Wextra -Wno-unused-parameter \ -Wno-parentheses -Wno-long-long \ -Wno-missing-field-initializers \ -Wno-tautological-compare \ -Wno-parentheses-equality \ -Wno-constant-logical-operand -Wno-self-assign \ -Wunused-variable -Werror=implicit-int \ -Werror=pointer-arith -Werror=write-strings \ -Werror=declaration-after-statement \ -Werror=implicit-function-declaration \ -Werror=deprecated-declarations \ -Wno-packed-bitfield-compat \ -Wsuggest-attribute=noreturn \ -Wsuggest-attribute=format \ -Wimplicit-fallthrough=0 * strip command: strip -S -x * install doc: yes * man page type: doc --- I think the behaviour under `-O0` is the correct one?