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fix: ensure consistent enum constant types across platforms #3

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fix: ensure consistent enum constant types across platforms #3

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5 changes: 5 additions & 0 deletions build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -266,6 +266,11 @@ fn generate_bindings(out_dir: &Path, include_dir: &Path) {
.allowlist_function("nghttp2_.*")
.allowlist_type("nghttp2_.*")
.allowlist_var("NGHTTP2_.*")
// Generate enum constants with consistent types across platforms.
// Without this, C enums become i32 on MSVC (C standard: enum is int)
// but u32 on GCC/Clang (where the underlying type matches the values).
.default_enum_style(bindgen::EnumVariation::Consts)
.translate_enum_integer_types(true)
// Opaque types that should not derive Copy
.opaque_type("nghttp2_session")
.opaque_type("nghttp2_rcbuf")
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