Try -fstack-protector-strong on MinGW

The CI for MinGW has used it.

.github/workflows/mingw.yml

@@ -32,10 +32,10 @@ jobs:
       MSYSTEM: ${{ matrix.msystem }}
       MSYS2_ARCH: x86_64
       CHOST: "x86_64-w64-mingw32"
-      CFLAGS:   "-march=x86-64 -mtune=generic -O3 -pipe -fstack-protector-strong"
+      CFLAGS:   "-march=x86-64 -mtune=generic -O3 -pipe"
       CXXFLAGS: "-march=x86-64 -mtune=generic -O3 -pipe"
       CPPFLAGS: "-D_FORTIFY_SOURCE=2 -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048"
-      LDFLAGS:  "-pipe -fstack-protector-strong"
+      LDFLAGS:  "-pipe"
       UPDATE_UNICODE: "UNICODE_FILES=. UNICODE_PROPERTY_FILES=. UNICODE_AUXILIARY_FILES=. UNICODE_EMOJI_FILES=."
       GITPULLOPTIONS: --no-tags origin ${{github.ref}}
     strategy:

configure.ac

@@ -794,7 +794,7 @@ AS_IF([test "$GCC" = yes], [
 
     # -fstack-protector
     AS_CASE(["$target_os"],
-    [mingw*|emscripten*|wasi*], [
+    [emscripten*|wasi*], [
 	stack_protector=no
     ])
     AS_IF([test -z "${stack_protector+set}"], [
@@ -806,6 +806,8 @@ AS_IF([test "$GCC" = yes], [
 	    AS_IF([test "x$stack_protector" = xyes], [stack_protector=option; break])
 	])
     ])
+    AC_MSG_CHECKING([for -fstack-protector])
+    AC_MSG_RESULT(["$stack_protector"])
     AS_CASE(["$stack_protector"], [-*], [
 	RUBY_APPEND_OPTION(XCFLAGS, $stack_protector)
 	RUBY_APPEND_OPTION(XLDFLAGS, $stack_protector)