diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dbb8de0c..8ce04290 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -359,18 +359,24 @@ jobs:
     needs: [ job-rebuild-and-verify-stubs ]
     name: ${{ format('zigcc {0} {1}', matrix.zig_target, matrix.zig_pic) }}
     runs-on: ubuntu-latest
-    ##container: alpine:3.17 # older versions such as alpine:3.12 also work; no-container also works
+    container: 'alpine:3.18' # older versions such as alpine:3.12 also work; no-container also works
     strategy:
       fail-fast: false
       matrix:
         include:
           - { zig_target: aarch64-linux-musl }
+          - { zig_target: aarch64-linux-musl, zig_pic: -fPIE }
           - { zig_target: aarch64-macos.11-none }
           - { zig_target: aarch64-macos.12-none }
           - { zig_target: aarch64-macos.13-none }
           - { zig_target: aarch64-windows-gnu }
           - { zig_target: i386-linux-musl }
           - { zig_target: i386-windows-gnu }
+          - { zig_target: mips-linux-musl }
+          - { zig_target: mipsel-linux-musl }
+          - { zig_target: powerpc-linux-musl }
+          - { zig_target: powerpc64-linux-musl }
+          - { zig_target: powerpc64le-linux-musl }
           - { zig_target: x86_64-linux-musl }
           - { zig_target: x86_64-linux-musl, zig_pic: -fPIE }
           - { zig_target: x86_64-macos.11-none }
@@ -378,8 +384,8 @@ jobs:
           - { zig_target: x86_64-macos.13-none }
           - { zig_target: x86_64-windows-gnu }
     env:
-      # 2023-05-06
-      ZIG_DIST_VERSION: 0.11.0-dev.2991+9f3f9fb40
+      # 2023-05-12
+      ZIG_DIST_VERSION: 0.11.0-dev.3097+7f7bd206d
       # for zig-cc wrapper scripts (see below):
       ZIG_CPPFLAGS: -DUPX_DOCTEST_CONFIG_MULTITHREADING
       ZIG_FLAGS: ${{ matrix.zig_flags }}
diff --git a/.github/workflows/minimal-ci.yml b/.github/workflows/minimal-ci.yml
index 695505a5..35ae80b8 100644
--- a/.github/workflows/minimal-ci.yml
+++ b/.github/workflows/minimal-ci.yml
@@ -7,7 +7,7 @@ jobs:
   job-alpine-cmake:
     strategy:
       fail-fast: false
-      matrix: { container: ['alpine:3.12','alpine:3.17','alpine:edge','i386/alpine:edge'] }
+      matrix: { container: ['alpine:3.12','alpine:3.18','alpine:edge','i386/alpine:edge'] }
     name: ${{ format('container {0}', matrix.container) }}
     runs-on: ubuntu-latest
     container: ${{ matrix.container }}
diff --git a/.github/workflows/scan-build.yml b/.github/workflows/scan-build.yml
index c132344f..0c368fa9 100644
--- a/.github/workflows/scan-build.yml
+++ b/.github/workflows/scan-build.yml
@@ -1,4 +1,4 @@
-name: 'Static Analyzer - scan-build'
+name: 'Static Analyzer - clang scan-build'
 
 on:
   schedule:
@@ -9,7 +9,7 @@ jobs:
   analyze:
     strategy:
       fail-fast: false
-      matrix: {container: ['alpine:3.16','alpine:3.17','alpine:edge','i386/alpine:edge']}
+      matrix: {container: ['alpine:3.16','alpine:3.17','alpine:3.18','alpine:edge','i386/alpine:edge']}
     name: ${{ format('Analyze {0}', matrix.container) }}
     runs-on: ubuntu-latest
     container: ${{ matrix.container }}
@@ -20,7 +20,7 @@ jobs:
         run: |
           git clone --branch "$GITHUB_REF_NAME" --depth 1 https://github.com/upx/upx
           git -C upx submodule update --init
-      - name: 'Perform scan-build Analysis Debug'
+      - name: 'Perform clang scan-build Analysis Debug'
         run: 'make -C upx build/extra/scan-build/debug'
-      - name: 'Perform scan-build Analysis Release'
+      - name: 'Perform clang scan-build Analysis Release'
         run: 'make -C upx build/extra/scan-build/release'
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5511318a..183195a7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -361,8 +361,8 @@ endfunction()
 if(NOT UPX_CONFIG_CMAKE_DISABLE_PRINT_INFO)
 print_var(CMAKE_HOST_SYSTEM_NAME CMAKE_HOST_SYSTEM_VERSION)
 print_var(CMAKE_SYSTEM_NAME CMAKE_SYSTEM_VERSION CMAKE_CROSSCOMPILING)
-print_var(CMAKE_C_COMPILER_ID CMAKE_C_COMPILER_FRONTEND_VARIANT CMAKE_C_COMPILER_VERSION CMAKE_C_COMPILER_ARCHITECTURE_ID CMAKE_C_PLATFORM_ID CMAKE_C_COMPILER_ABI)
-print_var(CMAKE_CXX_COMPILER_ID CMAKE_CXX_COMPILER_FRONTEND_VARIANT CMAKE_CXX_COMPILER_VERSION CMAKE_CXX_COMPILER_ARCHITECTURE_ID CMAKE_CXX_PLATFORM_ID CMAKE_CXX_COMPILER_ABI)
+print_var(CMAKE_C_COMPILER_ID CMAKE_C_COMPILER_VERSION CMAKE_C_COMPILER_FRONTEND_VARIANT CMAKE_C_COMPILER_ARCHITECTURE_ID CMAKE_C_PLATFORM_ID CMAKE_C_COMPILER_ABI)
+print_var(CMAKE_CXX_COMPILER_ID CMAKE_CXX_COMPILER_VERSION CMAKE_CXX_COMPILER_FRONTEND_VARIANT CMAKE_CXX_COMPILER_ARCHITECTURE_ID CMAKE_CXX_PLATFORM_ID CMAKE_CXX_COMPILER_ABI)
 endif() # UPX_CONFIG_CMAKE_DISABLE_PRINT_INFO
 print_var(CMAKE_INSTALL_PREFIX CMAKE_CONFIGURATION_TYPES CMAKE_BUILD_TYPE)
 if(CMAKE_BUILD_TYPE AND NOT CMAKE_BUILD_TYPE MATCHES "^(Debug|None|Release)$")
diff --git a/src/help.cpp b/src/help.cpp
index 3be518a6..fe253465 100644
--- a/src/help.cpp
+++ b/src/help.cpp
@@ -407,7 +407,7 @@ void show_version(bool one_line) {
     fprintf(fp, "Copyright (C) 2000-2023 John F. Reiser\n");
     fprintf(fp, "Copyright (C) 2002-2023 Jens Medoch\n");
 #if (WITH_ZLIB)
-    fprintf(fp, "Copyright (C) 1995" "-2022 Jean-loup Gailly and Mark Adler\n");
+    fprintf(fp, "Copyright (C) 1995" "-2023 Jean-loup Gailly and Mark Adler\n");
 #endif
 #if (WITH_LZMA)
     fprintf(fp, "Copyright (C) 1999" "-2006 Igor Pavlov\n");
@@ -417,7 +417,7 @@ void show_version(bool one_line) {
     fprintf(fp, "Copyright (C) 2015" "-2023 Meta Platforms, Inc. and affiliates\n");
 #endif
 #if !defined(DOCTEST_CONFIG_DISABLE)
-    fprintf(fp, "Copyright (C) 2016" "-2021 Viktor Kirilov\n");
+    fprintf(fp, "Copyright (C) 2016" "-2023 Viktor Kirilov\n");
 #endif
     fprintf(fp, "UPX comes with ABSOLUTELY NO WARRANTY; for details type '%s -L'.\n", progname);
     // clang-format on
diff --git a/src/main.cpp b/src/main.cpp
index dcc18563..78f3f704 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -298,9 +298,9 @@ static char *prepare_shortopts(char *buf, const char *n, const struct mfx_option
 template <class T>
 static int getoptvar(T *var, const T min_value, const T max_value, const char *arg_fatal) {
     const char *p = mfx_optarg;
-    char *endptr;
+    char *endptr = nullptr;
     int r = 0;
-    long n;
+    long long n;
     T v;
 
     if (!p || !p[0]) {
@@ -310,20 +310,16 @@ static int getoptvar(T *var, const T min_value, const T max_value, const char *a
     // avoid interpretation as octal value
     while (p[0] == '0' && isdigit(p[1]))
         p++;
-    n = strtol(p, &endptr, 0);
+    n = strtoll(p, &endptr, 0);
     if (*endptr != '\0') {
         r = -2;
         goto error;
     }
     v = (T) n;
-    if (v < min_value) {
+    if ((long long) v != n || v < min_value || v > max_value) {
         r = -3;
         goto error;
     }
-    if (v > max_value) {
-        r = -4;
-        goto error;
-    }
     *var = v;
     goto done;
 error:
diff --git a/src/packer.h b/src/packer.h
index 9c36cda3..8214643c 100644
--- a/src/packer.h
+++ b/src/packer.h
@@ -26,8 +26,6 @@
  */
 
 #pragma once
-#ifndef UPX_PACKER_H__
-#define UPX_PACKER_H__ 1
 
 #include "util/membuffer.h"
 
@@ -102,7 +100,7 @@ bool ph_testOverlappingDecompression(const PackHeader &ph, SPAN_P(const byte) bu
 /*************************************************************************
 // abstract base class for packers
 //
-// FIXME: this class is way too fat and badly needs a decomposition
+// FIXME later: this class is way too fat and badly needs a decomposition
 **************************************************************************/
 
 class Packer {
@@ -362,6 +360,4 @@ int force_method(int method);     // (0x80ul<<24)|method
 int forced_method(int method);    // (0x80ul<<24)|method ==> method
 int is_forced_method(int method); // predicate
 
-#endif /* already included */
-
 /* vim:set ts=4 sw=4 et: */