[lld] [lld-macho] Fix category merging sed issue - Try nr.2 (PR #112981)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-lld

Author: None (alx32)

<details>
<summary>Changes</summary>

We replace sed with awk as I couldn't find a syntax that works consistently on Linux/Mac for sed. 
Repro'ed original issue on Mac and confirmed working now on Mac/Linux.

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Full diff: https://github.com/llvm/llvm-project/pull/112981.diff


1 Files Affected:

- (modified) lld/test/MachO/objc-category-merging-minimal.s (+1-1) 


``````````diff
diff --git a/lld/test/MachO/objc-category-merging-minimal.s b/lld/test/MachO/objc-category-merging-minimal.s
index 437294791bf33b..88c175333f2629 100644
--- a/lld/test/MachO/objc-category-merging-minimal.s
+++ b/lld/test/MachO/objc-category-merging-minimal.s
@@ -30,7 +30,7 @@
 
 ############ Test merging skipped due to invalid category name ############
 # Modify __OBJC_$_CATEGORY_MyBaseClass_$_Category01's name to point to L_OBJC_IMAGE_INFO+3
-# RUN: sed -E '/^__OBJC_\$_CATEGORY_MyBaseClass_\$_Category01:/ { n; s/^[ \t]*\.quad[ \t]+l_OBJC_CLASS_NAME_$/\t.quad\tL_OBJC_IMAGE_INFO+3/}' merge_cat_minimal.s > merge_cat_minimal_bad_name.s
+# RUN: awk '/^__OBJC_\$_CATEGORY_MyBaseClass_\$_Category01:/ { print; getline; sub(/^[ \t]*\.quad[ \t]+l_OBJC_CLASS_NAME_$/, "\t.quad\tL_OBJC_IMAGE_INFO+3"); print; next } { print }' merge_cat_minimal.s > merge_cat_minimal_bad_name.s
 
 # Assemble the modified source
 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-macos -o merge_cat_minimal_bad_name.o merge_cat_minimal_bad_name.s

``````````

</details>


https://github.com/llvm/llvm-project/pull/112981