From e05bac0fd56ea8cec0ba8f952197bdfbbbfb2e1a Mon Sep 17 00:00:00 2001
From: Eric Pouech <eric.pouech@gmail.com>
Date: Thu, 2 Sep 2021 11:23:02 +0200
Subject: [PATCH] dbghelp: Fix erroneous string manipulation when said string
 is empty.

Signed-off-by: Eric Pouech <eric.pouech@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/dbghelp/dwarf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/dbghelp/dwarf.c b/dlls/dbghelp/dwarf.c
index 0479f7c7401..6b4eb90c05a 100644
--- a/dlls/dbghelp/dwarf.c
+++ b/dlls/dbghelp/dwarf.c
@@ -2198,7 +2198,7 @@ static BOOL dwarf2_parse_line_numbers(const dwarf2_section_t* sections,
         traverse.data += rellen + 1;
         p = vector_add(&dirs, &ctx->pool);
 
-        if (*rel == '/' || !compile_dir)
+        if (*rel == '/' || !compile_dir || !*compile_dir)
             *p = rel;
         else
         {