[PATCH 02/13] dbghelp: check that we don't add same line number twice

[Eric Pouech]

This happens (at least) in dwarf debug info where there could be two entries
with same source file and line number, but different column numbers
(and we don't store columns)

Signed-off-by: Eric Pouech

---
 dlls/dbghelp/symbol.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dlls/dbghelp/symbol.c b/dlls/dbghelp/symbol.c
index 7747aaae2ae..435d94bc8eb 100644
--- a/dlls/dbghelp/symbol.c
+++ b/dlls/dbghelp/symbol.c
@@ -418,6 +418,11 @@ void symt_add_func_line(struct module* module, struct symt_function* func,
     }
     vlen = vector_length(&func->vlines);
     prev = vlen ? vector_at(&func->vlines, vlen - 1) : NULL;
+    if (last_matches && prev && addr == prev->u.address)
+    {
+        WARN("Duplicate addition of line number in %s\n", func->hash_elt.name);
+        return;
+    }
     if (!last_matches)
     {
         /* we shouldn't have line changes on first line of function */