BUG-2707; Disable SEHOP for installed binary via 'Image File Exection Options' during installation.

With permission from Nicky Dasmijn

indra/newview/installers/windows/installer_template.nsi

@@ -38,6 +38,7 @@ RequestExecutionLevel admin	# For when we write to Program Files
 ;; Project flags
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
+# This placeholder is replaced by viewer_manifest.py
 %%VERSION%%
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@ -72,7 +73,7 @@ LangString LanguageCode ${LANG_RUSSIAN}  "ru"
 LangString LanguageCode ${LANG_TURKISH}  "tr"
 LangString LanguageCode ${LANG_TRADCHINESE}  "zh"
 
-# this placeholder is replaced by viewer_manifest.py
+# This placeholder is replaced by viewer_manifest.py
 %%INST_VARS%%
 
 Name ${INSTNAME}
@@ -305,7 +306,9 @@ WriteRegStr HKEY_LOCAL_MACHINE "Software\Microsoft\Windows\CurrentVersion\Uninst
 WriteRegStr HKEY_LOCAL_MACHINE "Software\Microsoft\Windows\CurrentVersion\Uninstall\$INSTPROG" "DisplayName" "$INSTPROG"
 WriteRegStr HKEY_LOCAL_MACHINE "Software\Microsoft\Windows\CurrentVersion\Uninstall\$INSTPROG" "UninstallString" '"$INSTDIR\uninst.exe"'
 WriteRegStr HKEY_LOCAL_MACHINE "Software\Microsoft\Windows\CurrentVersion\Uninstall\$INSTPROG" "DisplayVersion" "${VERSION_LONG}"
-WriteRegDWORD HKEY_LOCAL_MACHINE "Software\Microsoft\Windows\CurrentVersion\Uninstall\$INSTPROG" "EstimatedSize" "0x0001D500" ; 117 MB
+WriteRegDWORD HKEY_LOCAL_MACHINE "Software\Microsoft\Windows\CurrentVersion\Uninstall\$INSTPROG" "EstimatedSize" "0x0001D500"		# ~117 MB
+# BUG-2707 Disable SEHOP for installed viewer.
+WriteRegDWORD HKEY_LOCAL_MACHINE "Software\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\$INSTEXE" "DisableExceptionChainValidation" 1
 
 # Write URL registry info
 WriteRegStr HKEY_CLASSES_ROOT "${URLNAME}" "(default)" "URL:Second Life"
@@ -356,6 +359,8 @@ Call un.CloseSecondLife
 # Clean up registry keys and subkeys (these should all be !defines somewhere)
 DeleteRegKey HKEY_LOCAL_MACHINE "SOFTWARE\Linden Research, Inc.\$INSTPROG"
 DeleteRegKey HKEY_LOCAL_MACHINE "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$INSTPROG"
+# BUG-2707 Remove entry that disabled SEHOP
+DeleteRegKey HKEY_LOCAL_MACHINE "Software\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\$INSTEXE"
 
 # Clean up shortcuts
 Delete "$SMPROGRAMS\$INSTSHORTCUT\*.*"