0007-Cygwin-__cxa-atexit.patch

Author: Blackhex

gcc/config.gcc

@@ -2202,6 +2202,7 @@ i[34567]86-*-cygwin*)
 	fi
 	default_use_cxa_atexit=yes
 	use_gcc_stdint=wrap
+	default_use_cxa_atexit=yes
 	;;
 x86_64-*-cygwin*)
 	need_64bit_isa=yes
@@ -2846,6 +2847,7 @@ mipstx39-*-elf* | mipstx39el-*-elf*)
 mmix-knuth-mmixware)
 	tm_file="${tm_file} newlib-stdint.h"
 	use_gcc_stdint=wrap
+	default_use_cxa_atexit=yes
 	;;
 mn10300-*-*)
 	tm_file="elfos.h newlib-stdint.h ${tm_file}"

libgcc/config/i386/cygming-crtbegin.c

@@ -146,7 +146,11 @@ __gcc_register_frame (void)
   /* If we use the __cxa_atexit method to register C++ dtors
      at object construction,  also use atexit to register eh frame
      info cleanup.  */
+#ifdef __CYGWIN__
+  __cxa_atexit(__gcc_deregister_frame, NULL, (void *)&__dso_handle);
+#else
   atexit(__gcc_deregister_frame);
+#endif /* __CYGWIN__ */
 #endif /* DEFAULT_USE_CXA_ATEXIT */
 }