[llvm] [MC] Do not crash on switching to sections of unknown types. (PR #92380)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-mc

Author: Ivan Kosarev (kosarev)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/92380.diff


2 Files Affected:

- (modified) llvm/lib/MC/MCSectionELF.cpp (+1-2) 
- (modified) llvm/test/MC/ELF/section-numeric-invalid-type.s (+2-2) 


``````````diff
diff --git a/llvm/lib/MC/MCSectionELF.cpp b/llvm/lib/MC/MCSectionELF.cpp
index b1efb839ba75f..6bbdef3dce32a 100644
--- a/llvm/lib/MC/MCSectionELF.cpp
+++ b/llvm/lib/MC/MCSectionELF.cpp
@@ -175,8 +175,7 @@ void MCSectionELF::printSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
   else if (Type == ELF::SHT_LLVM_LTO)
     OS << "llvm_lto";
   else
-    report_fatal_error("unsupported type 0x" + Twine::utohexstr(Type) +
-                       " for section " + getName());
+    OS << "0x" << Twine::utohexstr(Type);
 
   if (EntrySize) {
     assert(Flags & ELF::SHF_MERGE);
diff --git a/llvm/test/MC/ELF/section-numeric-invalid-type.s b/llvm/test/MC/ELF/section-numeric-invalid-type.s
index fefc364d9917b..32ef8fc462a8f 100644
--- a/llvm/test/MC/ELF/section-numeric-invalid-type.s
+++ b/llvm/test/MC/ELF/section-numeric-invalid-type.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux-gnu %s -o - \
 // RUN:   | llvm-readobj -S --symbols - | FileCheck --check-prefix=OBJ %s
 
-// RUN: not --crash llvm-mc -filetype=asm -triple=x86_64-pc-linux-gnu %s -o - 2>&1 \
+// RUN: llvm-mc -filetype=asm -triple=x86_64-pc-linux-gnu %s -o - \
 // RUN:   | FileCheck --check-prefix=ASM %s
 
   .section .sec,"a", at 0x7fffffff
@@ -11,4 +11,4 @@
 // OBJ-NEXT:   Type: Unknown (0x7FFFFFFF)
 // OBJ:      }
 
-// ASM: unsupported type 0x7fffffff for section .sec
+// ASM: .section .sec,"a", at 0x7fffffff

``````````

</details>


https://github.com/llvm/llvm-project/pull/92380