[llvm] [yaml2obj] Don't use uninitialized Type (PR #123274)

[James Henderson via llvm-commits]

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@@ -454,3 +454,19 @@ Sections:
 # LINK-NEXT:   [ 2] .ref.first PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] [[#%x,]]      1
 # LINK-NEXT:   [ 3] .ref.last  PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] [[#%x,]]      4
 # LINK-NEXT:   [ 4] .shstrtab
+
+# Must not crash under Msan.
+# RUN: not yaml2obj %s --docnum=15 -o %t15 2>&1 | FileCheck %s --check-prefix=FOO_SECTION
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jh7370 wrote:

Let's name the CHECK prefix something more descriptive, e.g. `UNKNOWN-TYPE`. We also tend to avoid underscores in prefix names in the yaml2obj tests (too easy to mistakenly use "-" instead of "_").

https://github.com/llvm/llvm-project/pull/123274