[Bug debug/58315] [4.8/4.9/5 Regression] Excessive memory use with -g

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58315

--- Comment #18 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Created attachment 34852
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34852&action=edit
reduced and indented testcase

Memory explosion occurs while compiling test03() function.  Memory usage before
calling vt_find_locations is 382MB and after is 650MB.  Memory usage after
calling vt_emit_notes is 1322MB.