[yaml2obj] - Check we correctly set the sh_info field of .symtab section.

[grimar]

Summary

initSymtabSectionHeader has the following line:
SHeader.sh_info = findLocalsNum(Symbols) + 1;

As was mentioned in a review comments for D60122,
it is never tested. The patch adds a test.

[jhenderson]

test/tools/yaml2obj/local-symbols.yaml

34 ↗

(On Diff #193464)

Could you add a non-local symbol for completeness, please?

[grimar]

• Addressed review comments.

[jhenderson]

LGTM.

llvm/trunk/test/tools/yaml2obj/local-symbols.yaml

+# Check we correctly set the sh_info field of .symtab section.
+# A symbol table section's sh_info section header member holds
+# the symbol table index for the first non-local symbol.
+
+# RUN: yaml2obj -docnum=1 %s -o %t
+# RUN: llvm-readobj -sections %t | FileCheck %s --check-prefix=ONE
+# ONE: Name: .symtab
+# ONE: Info: 2
+
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_DYN
+  Machine:         EM_X86_64
+Symbols:
+  - Name: local
+  - Name: global
+    Binding: STB_GLOBAL
+
+# RUN: yaml2obj -docnum=2 %s -o %t
+# RUN: llvm-readobj -sections %t | FileCheck %s --check-prefix=TWO
+# TWO: Name: .symtab
+# TWO: Info: 3
+
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_DYN
+  Machine:         EM_X86_64
+Symbols:
+  - Name:    local1
+  - Name:    local2
+  - Name:    global
+    Binding: STB_GLOBAL