CoCalc -- 0001-emscripten-related-changes-for-llvm-libc.patch

GitHub Repository: emscripten-core/emscripten
Path: blob/main/system/lib/llvm-libc/patches/0001-emscripten-related-changes-for-llvm-libc.patch
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From 71c098f061e74c5214087728b028da4ff9db9679 Mon Sep 17 00:00:00 2001
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From: google-yfyang <[email protected]>
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Date: Wed, 18 Jun 2025 13:57:16 -0400
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Subject: [PATCH] emscripten related changes for llvm-libc
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---
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 libc/src/__support/StringUtil/platform_errors.h      | 2 +-
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 libc/src/__support/StringUtil/tables/posix_errors.h  | 5 +++++
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 libc/src/__support/StringUtil/tables/stdc_errors.h   | 5 +++++
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 libc/src/__support/macros/properties/architectures.h | 4 ++++
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 4 files changed, 15 insertions(+), 1 deletion(-)
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diff --git a/libc/src/__support/StringUtil/platform_errors.h b/libc/src/__support/StringUtil/platform_errors.h
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index 32e8414b3e3d..5f83865482e7 100644
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--- a/libc/src/__support/StringUtil/platform_errors.h
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+++ b/libc/src/__support/StringUtil/platform_errors.h
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@@ -9,7 +9,7 @@
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 #ifndef LLVM_LIBC_SRC___SUPPORT_STRINGUTIL_PLATFORM_ERRORS_H
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 #define LLVM_LIBC_SRC___SUPPORT_STRINGUTIL_PLATFORM_ERRORS_H
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-#if defined(__linux__) || defined(__Fuchsia__)
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+#if defined(__linux__) || defined(__Fuchsia__) || defined(__EMSCRIPTEN__)
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 #include "tables/linux_platform_errors.h"
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 #else
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 #include "tables/minimal_platform_errors.h"
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diff --git a/libc/src/__support/StringUtil/tables/posix_errors.h b/libc/src/__support/StringUtil/tables/posix_errors.h
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index b21f28f0b132..031886dcc5cc 100644
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--- a/libc/src/__support/StringUtil/tables/posix_errors.h
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+++ b/libc/src/__support/StringUtil/tables/posix_errors.h
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@@ -63,7 +63,12 @@ LIBC_INLINE_VAR constexpr MsgTable<76> POSIX_ERRORS = {
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     MsgMapping(EPROTO, "Protocol error"),
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     MsgMapping(EMULTIHOP, "Multihop attempted"),
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     MsgMapping(EBADMSG, "Bad message"),
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+#ifdef __EMSCRIPTEN__
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+    // For now, match the musl string
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+    MsgMapping(EOVERFLOW, "Value too large for data type"),
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+#else
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     MsgMapping(EOVERFLOW, "Value too large for defined data type"),
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+#endif
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     MsgMapping(ENOTSOCK, "Socket operation on non-socket"),
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     MsgMapping(EDESTADDRREQ, "Destination address required"),
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     MsgMapping(EMSGSIZE, "Message too long"),
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diff --git a/libc/src/__support/StringUtil/tables/stdc_errors.h b/libc/src/__support/StringUtil/tables/stdc_errors.h
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index a326616f20ef..9a23d0718ea1 100644
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--- a/libc/src/__support/StringUtil/tables/stdc_errors.h
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+++ b/libc/src/__support/StringUtil/tables/stdc_errors.h
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@@ -16,7 +16,12 @@
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 namespace LIBC_NAMESPACE_DECL {
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 LIBC_INLINE_VAR constexpr const MsgTable<4> STDC_ERRORS = {
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+#ifdef __EMSCRIPTEN__
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+    // For now, match the musl name for errno 0.
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+    MsgMapping(0, "No error information"),
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+#else
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     MsgMapping(0, "Success"),
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+#endif
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     MsgMapping(EDOM, "Numerical argument out of domain"),
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     MsgMapping(ERANGE, "Numerical result out of range"),
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     MsgMapping(EILSEQ, "Invalid or incomplete multibyte or wide character"),
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diff --git a/libc/src/__support/macros/properties/architectures.h b/libc/src/__support/macros/properties/architectures.h
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index c88956ff4114..817ced4e95c2 100644
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--- a/libc/src/__support/macros/properties/architectures.h
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+++ b/libc/src/__support/macros/properties/architectures.h
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@@ -41,6 +41,10 @@
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 #define LIBC_TARGET_ARCH_IS_ARM
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 #endif
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+#if defined(__wasm__)
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+#define LIBC_TARGET_ARCH_IS_WASM
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+#endif
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+
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 #if defined(__aarch64__) || defined(__arm64__) || defined(_M_ARM64)
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 #define LIBC_TARGET_ARCH_IS_AARCH64
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 #endif
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-- 
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2.50.0.rc2.701.gf1e915cc24-goog
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