Eric Pouech : winedump: Don't crash on non-effective runtime function entries.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 9119e3102b2477a93ab97ec900ec35495b5c9a7a
URL:    https://gitlab.winehq.org/wine/wine/-/commit/9119e3102b2477a93ab97ec900ec354...

Author: Eric Pouech <epouech(a)codeweavers.com>
Date:   Tue Feb 13 08:58:37 2024 +0100

winedump: Don't crash on non-effective runtime function entries.

MSVC generates zeroed out entries when EditAndContinue (aka HotPatch)
is enabled.

Signed-off-by: Eric Pouech <epouech(a)codeweavers.com>

---

 tools/winedump/pe.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/winedump/pe.c b/tools/winedump/pe.c
index 1879dd0ce2a..1104072a2c2 100644
--- a/tools/winedump/pe.c
+++ b/tools/winedump/pe.c
@@ -863,6 +863,11 @@ static void dump_x86_64_unwind_info( const struct runtime_function_x86_64 *funct
     }
     info = RVA( function->UnwindData, sizeof(*info) );
 
+    if (!info)
+    {
+        printf( "  no unwind info (%x)\n", function->UnwindData );
+        return;
+    }
     printf( "  unwind info at %08x\n", function->UnwindData );
     if (info->version > 2)
     {