1 files changed, 44 insertions, 0 deletions
diff --git a/7.8-symtab-cygwin.patch b/7.8-symtab-cygwin.patch
new file mode 100644
index 0000000..6af82ba
--- /dev/null
+++ b/7.8-symtab-cygwin.patch
@@ -0,0 +1,44 @@
+See https://sourceware.org/ml/gdb-patches/2002-03/msg00557.html
+
+--- origsrc/gdb-7.8/gdb/symtab.c	2014-07-29 14:37:42.000000000 +0200
++++ src/gdb-7.8/gdb/symtab.c	2014-08-04 12:04:47.173108524 +0200
+@@ -641,6 +641,39 @@ symbol_find_demangled_name (struct gener
+ {
+   char *demangled = NULL;
+ 
++  /* On Windows, some functions use the `stdcall' calling convention,
++     in which the callee is expected to pop the arguments off the
++     stack.  Normally, the caller takes care of this, because only the
++     caller knows how many arguments it really passed.  To avoid
++     confusion, the linker symbols for `stdcall' functions have names
++     with a suffix "@N" attached to them, where "N" is the number of
++     bytes they'll pop.  That way, if a caller thinks some `stdcall'
++     function `foo' expects M argument bytes, but the definition of
++     `foo' expects N argument bytes, N != M, then the call will be a
++     reference to `foo@M', but the definition will have a linker
++     symbol `foo@N', and you'll get a link-time `symbol not found'
++     error, instead of a crash at run-time.
++
++     (Note how this fails to address calls through function pointers,
++     since the byte count isn't part of the function pointer's type.
++     Go, Microsoft!)
++
++     Whatever.  But our demangler doesn't like that '@N' suffix, so we
++     need to strip it off.  */
++  if (1)
++    {
++      char *arg_byte_suffix = strchr (mangled, '@');
++      if (arg_byte_suffix)
++        {
++          int prefix_len = arg_byte_suffix - mangled;
++          char *mangled_sans_suffix = alloca (prefix_len + 1);
++          memcpy (mangled_sans_suffix, mangled, prefix_len);
++          mangled_sans_suffix[prefix_len] = '\0';
++
++          mangled = mangled_sans_suffix;
++        }
++    }
++
+   if (gsymbol->language == language_unknown)
+     gsymbol->language = language_auto;
+