forked from OSchip/llvm-project
432 lines
15 KiB
Plaintext
432 lines
15 KiB
Plaintext
## In this test we test that dynamic symbols are dumped as expected.
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## Case 1: Dynamic symbol table found via the DT_SYMTAB dynamic tag.
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# RUN: yaml2obj --docnum=1 %s -o %t1.so
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# RUN: llvm-readobj --dyn-symbols %t1.so 2>&1 \
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# RUN: | FileCheck %s --implicit-check-not="warning:" --check-prefix=DYNSYMS-LLVM
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# RUN: llvm-readelf --dyn-symbols %t1.so 2>&1 \
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# RUN: | FileCheck %s --implicit-check-not="warning:" --check-prefix=DYNSYMS-GNU
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# DYNSYMS-LLVM: DynamicSymbols [
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# DYNSYMS-LLVM-NEXT: Symbol {
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# DYNSYMS-LLVM-NEXT: Name: (0)
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# DYNSYMS-LLVM-NEXT: Value: 0x0
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# DYNSYMS-LLVM-NEXT: Size: 0
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# DYNSYMS-LLVM-NEXT: Binding: Local (0x0)
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# DYNSYMS-LLVM-NEXT: Type: None (0x0)
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# DYNSYMS-LLVM-NEXT: Other: 0
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# DYNSYMS-LLVM-NEXT: Section: Undefined (0x0)
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# DYNSYMS-LLVM-NEXT: }
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# DYNSYMS-LLVM-NEXT: Symbol {
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# DYNSYMS-LLVM-NEXT: Name: foo (5)
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# DYNSYMS-LLVM-NEXT: Value: 0x0
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# DYNSYMS-LLVM-NEXT: Size: 0
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# DYNSYMS-LLVM-NEXT: Binding: Local (0x0)
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# DYNSYMS-LLVM-NEXT: Type: None (0x0)
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# DYNSYMS-LLVM-NEXT: Other: 0
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# DYNSYMS-LLVM-NEXT: Section: Undefined (0x0)
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# DYNSYMS-LLVM-NEXT: }
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# DYNSYMS-LLVM-NEXT: Symbol {
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# DYNSYMS-LLVM-NEXT: Name: bar (1)
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# DYNSYMS-LLVM-NEXT: Value: 0x0
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# DYNSYMS-LLVM-NEXT: Size: 0
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# DYNSYMS-LLVM-NEXT: Binding: Local (0x0)
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# DYNSYMS-LLVM-NEXT: Type: None (0x0)
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# DYNSYMS-LLVM-NEXT: Other: 0
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# DYNSYMS-LLVM-NEXT: Section: Undefined (0x0)
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# DYNSYMS-LLVM-NEXT: }
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# DYNSYMS-LLVM-NEXT: ]
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# DYNSYMS-GNU: Symbol table '.dynsym' contains 3 entries:
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# DYNSYMS-GNU-NEXT: Num: Value Size Type Bind Vis Ndx Name
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# DYNSYMS-GNU-NEXT: 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
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# DYNSYMS-GNU-NEXT: 1: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND foo
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# DYNSYMS-GNU-NEXT: 2: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND bar
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Entries:
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- Tag: DT_SYMTAB
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Value: 0x100
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- Tag: DT_NULL
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Value: 0
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- Name: .dynsym
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Type: SHT_DYNSYM
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Address: 0x100
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DynamicSymbols:
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- Name: foo
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- Name: bar
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x100
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Sections:
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- Section: .dynsym
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## Case 2: Check the output for aliases.
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## a) Check the two-letter alias --dt is equivalent to the --dyn-symbols
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## full flag name.
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# RUN: llvm-readobj --dt %t1.so > %t.readobj-dt-alias
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# RUN: llvm-readobj --dyn-symbols %t1.so > %t.readobj-dt-no-alias
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# RUN: cmp %t.readobj-dt-alias %t.readobj-dt-no-alias
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## b) Check --dyn-syms equals --dyn-symbols, --dt for llvm-readobj.
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# RUN: llvm-readobj --dyn-syms %t1.so > %t.readobj-dyn-syms
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# RUN: cmp %t.readobj-dt-alias %t.readobj-dyn-syms
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## c) Check --dyn-syms equals --dyn-symbols for llvm-readelf.
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# RUN: llvm-readelf --dyn-syms %t1.so > %t.readelf-dyn-syms
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# RUN: llvm-readelf --dyn-symbols %t1.so > %t.readelf-dyn-symbols
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# RUN: cmp %t.readelf-dyn-symbols %t.readelf-dyn-syms
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## Case 3: Check that we are able to dump the dynamic symbol table even when we have no program headers.
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## In this case we find the table by it's type (SHT_DYNSYM) and ignore the DT_SYMTAB value.
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# RUN: yaml2obj --docnum=2 %s -o %t2.so
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# RUN: llvm-readobj %t2.so --dyn-symbols | FileCheck %s --check-prefix=NOPHDRS-LLVM
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# RUN: llvm-readelf %t2.so --dyn-symbols | FileCheck %s --check-prefix=NOPHDRS-GNU
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# NOPHDRS-LLVM: Name: foo
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# NOPHDRS-GNU: 1: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND foo
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Entries:
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- Tag: DT_SYMTAB
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Value: 0xffff1234
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- Tag: DT_NULL
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Value: 0
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DynamicSymbols:
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- Name: foo
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## Case 4: Check we report a warning when there is no SHT_DYNSYM section and we can't map the DT_SYMTAB value
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## to an address because of the absence of a corresponding PT_LOAD program header.
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# RUN: yaml2obj --docnum=3 %s -o %t3.so
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# RUN: llvm-readobj %t3.so --dyn-symbols 2>&1 | FileCheck %s -DFILE=%t3.so --check-prefixes=NOSHT-DYNSYM,NOSHT-DYNSYM-LLVM
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# RUN: llvm-readelf %t3.so --dyn-symbols 2>&1 | FileCheck %s -DFILE=%t3.so --check-prefix=NOSHT-DYNSYM
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# NOSHT-DYNSYM: warning: '[[FILE]]': Unable to parse DT_SYMTAB: virtual address is not in any segment: 0x0
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# NOSHT-DYNSYM-LLVM: DynamicSymbols [
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# NOSHT-DYNSYM-LLVM-NEXT: ]
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_X86_64
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Sections:
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- Name: .dynsym
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Type: SHT_PROGBITS
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Entries:
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- Tag: DT_SYMTAB
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Value: 0
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- Tag: DT_NULL
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Value: 0
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DynamicSymbols:
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- Name: foo
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## Case 5: Check that when we can't map the value of the DT_SYMTAB tag to an address, we report a warning and
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## use the information in the section header table to locate the dynamic symbol table.
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# RUN: yaml2obj --docnum=4 %s -o %t4.so
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# RUN: llvm-readobj %t4.so --dyn-symbols 2>&1 | FileCheck -DFILE=%t4.so %s --check-prefixes=BROKEN-DTSYMTAB,BROKEN-DTSYMTAB-LLVM
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# RUN: llvm-readelf %t4.so --dyn-symbols 2>&1 | FileCheck -DFILE=%t4.so %s --check-prefixes=BROKEN-DTSYMTAB,BROKEN-DTSYMTAB-GNU
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# BROKEN-DTSYMTAB: warning: '[[FILE]]': Unable to parse DT_SYMTAB: virtual address is not in any segment: 0xffff1234
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# BROKEN-DTSYMTAB-LLVM: Name: foo
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# BROKEN-DTSYMTAB-GNU: 1: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND foo
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Entries:
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- Tag: DT_SYMTAB
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Value: 0xffff1234
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- Tag: DT_NULL
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Value: 0
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DynamicSymbols:
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- Name: foo
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x0000
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Sections:
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- Section: .dynsym
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## Case 6: Check that if we can get the location of the dynamic symbol table using both the DT_SYMTAB value
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## and the section headers table then we prefer the former and report a warning.
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# RUN: yaml2obj --docnum=5 %s -o %t5.so
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# RUN: llvm-readobj %t5.so --dyn-symbols 2>&1 | FileCheck -DFILE=%t5.so %s --check-prefixes=PREFER-DTSYMTAB,PREFER-DTSYMTAB-LLVM
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# RUN: llvm-readelf %t5.so --dyn-symbols 2>&1 | FileCheck -DFILE=%t5.so %s --check-prefixes=PREFER-DTSYMTAB,PREFER-DTSYMTAB-GNU
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# PREFER-DTSYMTAB: warning: '[[FILE]]': SHT_DYNSYM section header and DT_SYMTAB disagree about the location of the dynamic symbol table
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# PREFER-DTSYMTAB-LLVM: Name: o
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# PREFER-DTSYMTAB-GNU: 1: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND o
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Entries:
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- Tag: DT_SYMTAB
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Value: 0x0
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- Tag: DT_NULL
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Value: 0
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- Name: .dynsym
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Type: SHT_DYNSYM
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- Name: .mydynsym
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Type: SHT_DYNSYM
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## The Content describes 2 symbols: zero symbol and symbol with st_name == 3.
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Content: "000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000"
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DynamicSymbols:
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- Name: foo
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x0000
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Sections:
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- Section: .mydynsym
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## Case 7: Check how we dump versioned symbols. Use both -V and --dyn-symbols
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## to check that printed version is consistent.
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# RUN: yaml2obj %s --docnum=6 -o %t6
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# RUN: llvm-readobj -V --dyn-symbols %t6 | FileCheck %s --check-prefix=VERSIONED-LLVM
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# RUN: llvm-readelf -V --dyn-symbols %t6 | FileCheck %s --check-prefix=VERSIONED-GNU
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# VERSIONED-LLVM: Symbol {
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# VERSIONED-LLVM: Name: foo (16)
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# VERSIONED-LLVM-NEXT: Value: 0x0
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# VERSIONED-LLVM-NEXT: Size: 0
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# VERSIONED-LLVM-NEXT: Binding: Local (0x0)
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# VERSIONED-LLVM-NEXT: Type: None (0x0)
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# VERSIONED-LLVM-NEXT: Other: 0
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# VERSIONED-LLVM-NEXT: Section: Undefined (0x0)
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# VERSIONED-LLVM-NEXT: }
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# VERSIONED-LLVM-NEXT: Symbol {
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# VERSIONED-LLVM-NEXT: Name: bar@@Default (12)
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# VERSIONED-LLVM-NEXT: Value: 0x0
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# VERSIONED-LLVM-NEXT: Size: 0
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# VERSIONED-LLVM-NEXT: Binding: Local (0x0)
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# VERSIONED-LLVM-NEXT: Type: None (0x0)
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# VERSIONED-LLVM-NEXT: Other: 0
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# VERSIONED-LLVM-NEXT: Section: Undefined (0x0)
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# VERSIONED-LLVM-NEXT: }
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# VERSIONED-LLVM-NEXT: Symbol {
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# VERSIONED-LLVM-NEXT: Name: zed@NonDefault (20)
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# VERSIONED-LLVM-NEXT: Value: 0x0
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# VERSIONED-LLVM-NEXT: Size: 0
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# VERSIONED-LLVM-NEXT: Binding: Local (0x0)
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# VERSIONED-LLVM-NEXT: Type: None (0x0)
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# VERSIONED-LLVM-NEXT: Other: 0
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# VERSIONED-LLVM-NEXT: Section: Undefined (0x0)
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# VERSIONED-LLVM-NEXT: }
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# VERSIONED-LLVM: VersionSymbols [
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# VERSIONED-LLVM: Name: foo
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# VERSIONED-LLVM: Name: bar@@Default
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# VERSIONED-LLVM: Name: zed@NonDefault
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# VERSIONED-GNU: Num: Value Size Type Bind Vis Ndx Name
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# VERSIONED-GNU: 1: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND foo
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# VERSIONED-GNU-NEXT: 2: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND bar@@Default
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# VERSIONED-GNU-NEXT: 3: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND zed@NonDefault
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# VERSIONED-GNU: 000: 0 (*local*) 1 (*global*) 2 (Default) 3h(NonDefault)
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_X86_64
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Sections:
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- Name: .gnu.version
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Type: SHT_GNU_versym
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Flags: [ SHF_ALLOC ]
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Link: .dynsym
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AddressAlign: 0x2
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EntSize: 0x2
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## 0x8000 is a special VERSYM_HIDDEN bit.
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Entries: [ 0, 1, 2, 0x8003 ]
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- Name: .gnu.version_d
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Type: SHT_GNU_verdef
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Flags: [ SHF_ALLOC ]
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Link: .dynstr
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AddressAlign: 0x4
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Info: 0x2
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Entries:
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- Version: 1
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Flags: 0
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VersionNdx: 2
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Hash: 0
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Names:
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- Default
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- Version: 1
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Flags: 0
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VersionNdx: 3
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Hash: 0
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Names:
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- NonDefault
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DynamicSymbols:
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- Name: foo
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- Name: bar
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- Name: zed
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## Case 8: Check what we print when:
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## a) The dynamic symbol table does not exist.
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# RUN: yaml2obj %s --docnum=7 -o %t7
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# RUN: llvm-readobj --dyn-symbols %t7 | FileCheck %s --check-prefix=NO-DYNSYM-LLVM
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# RUN: llvm-readelf --dyn-symbols %t7 | count 0
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## b) The dynamic symbol table has a size of 0.
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# RUN: yaml2obj %s --docnum=8 -o %t8
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# RUN: llvm-readobj --dyn-symbols %t8 | FileCheck %s --check-prefix=NO-DYNSYM-LLVM
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# RUN: llvm-readelf --dyn-symbols %t8 | count 0
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## c) The dynamic symbol table only contains the null symbol.
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# RUN: yaml2obj %s --docnum=9 -o %t9
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# RUN: llvm-readobj --dyn-symbols %t9 | FileCheck %s --check-prefix=DYNSYM-EMPTY-LLVM
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# RUN: llvm-readelf --dyn-symbols %t9 | FileCheck %s --check-prefix=DYNSYM-EMPTY-GNU
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# NO-DYNSYM-LLVM: DynamicSymbols [
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# NO-DYNSYM-LLVM-NEXT: ]
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# DYNSYM-EMPTY-LLVM: DynamicSymbols [
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# DYNSYM-EMPTY-LLVM-NEXT: Symbol {
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# DYNSYM-EMPTY-LLVM-NEXT: Name: (0)
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# DYNSYM-EMPTY-LLVM-NEXT: Value: 0x0
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# DYNSYM-EMPTY-LLVM-NEXT: Size: 0
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# DYNSYM-EMPTY-LLVM-NEXT: Binding: Local (0x0)
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# DYNSYM-EMPTY-LLVM-NEXT: Type: None (0x0)
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# DYNSYM-EMPTY-LLVM-NEXT: Other: 0
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# DYNSYM-EMPTY-LLVM-NEXT: Section: Undefined (0x0)
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# DYNSYM-EMPTY-LLVM-NEXT: }
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# DYNSYM-EMPTY-LLVM-NEXT: ]
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# DYNSYM-EMPTY-GNU: Symbol table '.dynsym' contains 1 entries:
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# DYNSYM-EMPTY-GNU-NEXT: Num: Value Size Type Bind Vis Ndx Name
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# DYNSYM-EMPTY-GNU-NEXT: 0: 00000000 0 NOTYPE LOCAL DEFAULT UND
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--- !ELF
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FileHeader:
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Class: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_386
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--- !ELF
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FileHeader:
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Class: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_386
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Sections:
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- Name: .dynsym
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Type: SHT_DYNSYM
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Size: 0
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--- !ELF
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FileHeader:
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Class: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_386
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DynamicSymbols: []
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## Case 9: Check what we print when:
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## a) The size of the dynamic symbol table is not a multiple of its entry size.
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# RUN: yaml2obj %s --docnum=10 -o %t10
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# RUN: llvm-readobj --dyn-symbols %t10 2>&1 | FileCheck %s -DFILE=%t10 --check-prefix=DYNSYM-SIZE-INVALID1
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# RUN: llvm-readelf --dyn-symbols %t10 2>&1 | FileCheck %s -DFILE=%t10 --check-prefix=DYNSYM-SIZE-INVALID1
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# DYNSYM-SIZE-INVALID1: warning: '[[FILE]]': section with index 1 has invalid size (0x1) or entry size (0x10)
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## b) The same, but the DT_SYMTAB tag is present. In this case the dynamic tag has priority over the
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## information about a location and an entity size of the dynamic symbol table from the section header.
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## The code uses sizeof(Elf_Sym) for an entity size, so it can't be incorrect and
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## the message printed is a bit shorter.
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# RUN: yaml2obj %s --docnum=11 -o %t11
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# RUN: llvm-readobj --dyn-symbols %t11 2>&1 | FileCheck %s -DFILE=%t11 --check-prefix=DYNSYM-SIZE-INVALID2
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# RUN: llvm-readelf --dyn-symbols %t11 2>&1 | FileCheck %s -DFILE=%t11 --check-prefix=DYNSYM-SIZE-INVALID2
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# DYNSYM-SIZE-INVALID2: warning: '[[FILE]]': section with index 2 has invalid size (0x1){{$}}
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## c) In the case when the DT_SYMENT tag is present, we report when it's value does not match the
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# value of the symbol size for the platform.
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# RUN: yaml2obj %s -D BITS=32 --docnum=12 -o %t12
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# RUN: llvm-readobj --dyn-symbols %t12 2>&1 | FileCheck %s -DFILE=%t12 --check-prefix=DYNSYM-SIZE-INVALID3
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# RUN: llvm-readelf --dyn-symbols %t12 2>&1 | FileCheck %s -DFILE=%t12 --check-prefix=DYNSYM-SIZE-INVALID3
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# RUN: yaml2obj %s -D BITS=64 --docnum=12 -o %t13
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# RUN: llvm-readobj --dyn-symbols %t13 2>&1 | FileCheck %s -DFILE=%t13 --check-prefix=DYNSYM-SIZE-INVALID4
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# RUN: llvm-readelf --dyn-symbols %t13 2>&1 | FileCheck %s -DFILE=%t13 --check-prefix=DYNSYM-SIZE-INVALID4
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# DYNSYM-SIZE-INVALID3: warning: '[[FILE]]': DT_SYMENT value of 0x123 is not the size of a symbol (0x10){{$}}
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# DYNSYM-SIZE-INVALID4: warning: '[[FILE]]': DT_SYMENT value of 0x123 is not the size of a symbol (0x18){{$}}
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--- !ELF
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FileHeader:
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Class: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_386
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Sections:
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- Name: .dynsym
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Type: SHT_DYNSYM
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Size: 0x1
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
|
|
Data: ELFDATA2LSB
|
|
Type: ET_DYN
|
|
Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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