C++26 becomes first C++ draft to fail an ISO DIS vote

On October 23, 2026, the C++26 draft failed its DIS ballot: 12 of 20 P-members voted yes (60% against a 66.7% threshold), while 9 of 22 bodies voted no (41% against a 25% cap). It is the first C++ draft to fail such a vote, Robert Seacord said. Contracts, reflection, std::execution and library hardening are on hold.

• Yes votes: 12 of 20 P-members (60%) vs 66.7% required
• No votes: 9 of 22 bodies (41%) vs 25% cap
• Denmark, Spain, Italy, Japan and Sweden among the no votes
• Contracts, reflection, std::execution and library hardening paused