Support gcc 10 and clang 11

1 files changed, 1 insertions, 1 deletions

diff --git a/programopts.cpp b/programopts.cpp
index aee8b05..611bbea 100644
--- a/programopts.cpp
+++ b/programopts.cpp
@@ -40,7 +40,7 @@ ProgramOpts::~ProgramOpts()
 
 void ProgramOpts::process()
 {
- for (size_t i = 1; i < m_pimpl->m_argc; i++) {
+ for (int i = 1; i < m_pimpl->m_argc; i++) {
   std::string arg{ m_pimpl->m_argv[i] };
   if (arg.size() == 0)
    throw std::runtime_error("Empty option #"s + std::to_string(i));