From 2dca6244145ec31a690d345faaf189430171cfac Mon Sep 17 00:00:00 2001
From: Corentin Le Molgat <corentinl@google.com>
Date: Tue, 27 May 2025 16:41:13 +0200
Subject: [PATCH] lp_data: Fix compilation (#4662)

---
 ortools/lp_data/lp_parser.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ortools/lp_data/lp_parser.cc b/ortools/lp_data/lp_parser.cc
index f41e28626a..c8654c49e1 100644
--- a/ortools/lp_data/lp_parser.cc
+++ b/ortools/lp_data/lp_parser.cc
@@ -237,6 +237,9 @@ bool LPParser::ParseConstraint(StringPiece constraint) {
 
 namespace {
 
+template<class>
+constexpr bool dependent_false = false; // workaround before CWG2518/P2593R1
+
 template <typename T>
 bool SimpleAtoFractional(absl::string_view str, T* value) {
   if constexpr (std::is_same_v<T, double>) {
@@ -244,7 +247,7 @@ bool SimpleAtoFractional(absl::string_view str, T* value) {
   } else if constexpr (std::is_same_v<T, float>) {
     return absl::SimpleAtof(str, value);
   } else {
-    static_assert(false, "Unsupported fractional type");
+    static_assert(dependent_false<T>, "Unsupported fractional type");
     return false;
   }
 }