Add gcc10-conversion.patch provide by Red Hat's compiler team

gcc10-conversion.patch

@@ -0,0 +1,26 @@
+diff -Nrup a/CPP/Windows/ErrorMsg.cpp b/CPP/Windows/ErrorMsg.cpp
+--- a/CPP/Windows/ErrorMsg.cpp	2015-01-18 11:20:28.000000000 -0700
++++ b/CPP/Windows/ErrorMsg.cpp	2019-09-24 13:01:18.887289152 -0600
+@@ -14,14 +14,14 @@ UString MyFormatMessage(DWORD errorCode)
+   AString msg;
+ 
+   switch(errorCode) {
+-    case ERROR_NO_MORE_FILES   : txt = "No more files"; break ;
+-    case E_NOTIMPL             : txt = "E_NOTIMPL"; break ;
+-    case E_NOINTERFACE         : txt = "E_NOINTERFACE"; break ;
+-    case E_ABORT               : txt = "E_ABORT"; break ;
+-    case E_FAIL                : txt = "E_FAIL"; break ;
+-    case STG_E_INVALIDFUNCTION : txt = "STG_E_INVALIDFUNCTION"; break ;
+-    case E_OUTOFMEMORY         : txt = "E_OUTOFMEMORY"; break ;
+-    case E_INVALIDARG          : txt = "E_INVALIDARG"; break ;
++    case unsigned (ERROR_NO_MORE_FILES)   : txt = "No more files"; break ;
++    case unsigned (E_NOTIMPL)             : txt = "E_NOTIMPL"; break ;
++    case unsigned (E_NOINTERFACE)         : txt = "E_NOINTERFACE"; break ;
++    case unsigned (E_ABORT)               : txt = "E_ABORT"; break ;
++    case unsigned (E_FAIL)                : txt = "E_FAIL"; break ;
++    case unsigned (STG_E_INVALIDFUNCTION) : txt = "STG_E_INVALIDFUNCTION"; break ;
++    case unsigned (E_OUTOFMEMORY)         : txt = "E_OUTOFMEMORY"; break ;
++    case unsigned (E_INVALIDARG)          : txt = "E_INVALIDARG"; break ;
+     case ERROR_DIRECTORY          : txt = "Error Directory"; break ;
+     default:
+       txt = strerror(errorCode);

p7zip.spec

@@ -7,7 +7,7 @@
 Summary: Very high compression ratio file archiver
 Name: p7zip
 Version: 16.02
-Release: 15%{?dist}
+Release: 16%{?dist}
 # Files under C/Compress/Lzma/ are dual LGPL or CPL
 License: LGPLv2 and (LGPLv2+ or CPL)
 URL: http://p7zip.sourceforge.net/
@@ -28,6 +28,7 @@ Patch6: CVE-2016-9296.patch
 Patch7: 05-hardening-flags.patch
 Patch10: CVE-2017-17969.patch
 Patch11: 14-Fix-g++-warning.patch
+Patch12: gcc10-conversion.patch
 
 BuildRequires: gcc
 BuildRequires: gcc-c++
@@ -172,6 +173,9 @@ make test
 
 
 %changelog
+* Tue Sep 24 2019 Sérgio Basto <sergio@serjux.com> - 16.02-16
+- Add gcc10-conversion.patch provide by Red Hat's compiler team
+
 * Thu Jul 25 2019 Fedora Release Engineering <releng@fedoraproject.org> - 16.02-15
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild