* addr2line.c (rb_dump_backtrace_with_lines): a function to get must

be a function in the main executable, whose absolute path is not
  available by dladdr, and ruby get it by /proc/self/exe on Linux.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45410 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Wed Mar 26 01:55:45 2014  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* addr2line.c (rb_dump_backtrace_with_lines): a function to get must
+	  be a function in the main executable, whose absolute path is not
+	  available by dladdr, and ruby get it by /proc/self/exe on Linux.
+
 Wed Mar 26 01:34:50 2014  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* addr2line.c (fill_lines): skip if path is NULL.

addr2line.c

@@ -623,8 +623,9 @@ rb_dump_backtrace_with_lines(int num_traces, void **traces, char **syms)
     intptr_t main_fbase;
     char *main_path;
     {
+	extern int main(int argc, char **argv); /* a function in the main executalbe */
 	Dl_info info;
-	dladdr(rb_dump_backtrace_with_lines, &info);
+	dladdr(main, &info);
 	main_fbase = (intptr_t)info.dli_fbase;
     }
     {