Avoid dropping null byte in format string (#4732)

* Avoid dropping null byte in format string * Add a test for null byte in format string
2026-04-24 00:34:27 +08:00
parent 4b50ad7944
commit eeff8680ed
2 changed files with 13 additions and 3 deletions
--- a/test/compile-error-test/CMakeLists.txt
+++ b/test/compile-error-test/CMakeLists.txt
@@ -239,6 +239,16 @@ if (CMAKE_CXX_STANDARD GREATER_EQUAL 20)
  #endif
    "
    ERROR)
+  expect_compile(
+    format-string-embedded-nul-error
+    "
+    #if FMT_USE_CONSTEVAL
+      fmt::format(\"a\\0{}\");
+    #else
+      #error
+    #endif
+    "
+    ERROR)

  # Compile-time argument name check
  expect_compile(