[libc] Resolve multi-line comment error

[Caslyn]

gcc interprets a backslash '\' as the last char before a new line as a line continuation character, even in a comment context. This can produce an "error: multi-line comment [-Werror=comment]".

This removes the line continuation so that the comment can compile with gcc.

[llvmbot]

@llvm/pr-subscribers-libc

Author: Caslyn Tonelli (Caslyn)

Changes

gcc interprets a backslash '' as the last char before a new line as a line continuation character, even in a comment context. This can produce an "error: multi-line comment [-Werror=comment]".

This removes the line continuation so that the comment can compile with gcc.

---

Full diff: https://github.com/llvm/llvm-project/pull/117636.diff

1 Files Affected:

• (modified) libc/src/__support/common.h (+1-2)

diff --git a/libc/src/__support/common.h b/libc/src/__support/common.h
index 79803a346f692e..a9beeb38cc1fa7 100644
--- a/libc/src/__support/common.h
+++ b/libc/src/__support/common.h
@@ -27,8 +27,7 @@
 //
 // For examples:
 // #define LLVM_LIBC_FUNCTION_ATTR_memcpy LLVM_LIBC_EMPTY, [[gnu::weak]]
-// #define LLVM_LIBC_FUNCTION_ATTR_memchr LLVM_LIBC_EMPTY, [[gnu::weak]]       \
-//                                        [[gnu::visibility("default")]]
+// #define LLVM_LIBC_FUNCTION_ATTR_memchr LLVM_LIBC_EMPTY, [[gnu::weak]] [[gnu::visibility("default")]]
 #define LLVM_LIBC_EMPTY
 
 #define GET_SECOND(first, second, ...) second

[llvmbot]

@llvm/pr-subscribers-libc

Author: Caslyn Tonelli (Caslyn)

Changes

gcc interprets a backslash '' as the last char before a new line as a line continuation character, even in a comment context. This can produce an "error: multi-line comment [-Werror=comment]".

This removes the line continuation so that the comment can compile with gcc.

---

Full diff: https://github.com/llvm/llvm-project/pull/117636.diff

1 Files Affected:

• (modified) libc/src/__support/common.h (+1-2)

diff --git a/libc/src/__support/common.h b/libc/src/__support/common.h
index 79803a346f692e..a9beeb38cc1fa7 100644
--- a/libc/src/__support/common.h
+++ b/libc/src/__support/common.h
@@ -27,8 +27,7 @@
 //
 // For examples:
 // #define LLVM_LIBC_FUNCTION_ATTR_memcpy LLVM_LIBC_EMPTY, [[gnu::weak]]
-// #define LLVM_LIBC_FUNCTION_ATTR_memchr LLVM_LIBC_EMPTY, [[gnu::weak]]       \
-//                                        [[gnu::visibility("default")]]
+// #define LLVM_LIBC_FUNCTION_ATTR_memchr LLVM_LIBC_EMPTY, [[gnu::weak]] [[gnu::visibility("default")]]
 #define LLVM_LIBC_EMPTY
 
 #define GET_SECOND(first, second, ...) second

[github-actions]

✅ With the latest revision this PR passed the C/C++ code formatter.

[Caslyn]

Disabled clang-format on the comment allow the longer line to demonstrate multiple attributes.