--- /dev/null
+# RUN: yaml2obj %s > %t
+# RUN: not llvm-objcopy %t %t2 2>&1 | FileCheck %s
+# CHECK: error: Invalid alignment 1 of group section .group.
+
+# In this test, we check that llvm-objcopy reports an error
+# for SHT_GROUP section with invalid alignment (not a multiple of 4).
+
+--- !ELF
+FileHeader:
+ Class: ELFCLASS64
+ Data: ELFDATA2LSB
+ Type: ET_REL
+ Machine: EM_X86_64
+Sections:
+## It is not important for passing the test case to have this placeholder,
+## but having it would trigger ubsan failure when writing the group section
+## into a file if the error tested would not be reported by llvm-objcopy.
+ - Name: .placeholder
+ Type: SHT_PROGBITS
+ Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
+ AddressAlign: 0x0000000000000001
+ Content: "00"
+ - Name: .group
+ Type: SHT_GROUP
+ Link: .symtab
+ AddressAlign: 0x0000000000000001
+ Info: foo
+ Members:
+ - SectionOrType: GRP_COMDAT
+ - SectionOrType: .text.foo
+ - Name: .text.foo
+ Type: SHT_PROGBITS
+ Flags: [ SHF_ALLOC, SHF_EXECINSTR, SHF_GROUP ]
+ AddressAlign: 0x0000000000000001
+Symbols:
+ Local:
+ - Name: foo
+ Section: .group
template <class ELFT>
void ELFBuilder<ELFT>::initGroupSection(GroupSection *GroupSec) {
+ if (GroupSec->Align % sizeof(ELF::Elf32_Word) != 0)
+ error("Invalid alignment " + Twine(GroupSec->Align) + " of group section " +
+ GroupSec->Name);
auto SecTable = Obj.sections();
auto SymTab = SecTable.template getSectionOfType<SymbolTableSection>(
GroupSec->Link,