llvm-capstone/lld/test/COFF/reloc-oob.yaml
Reid Kleckner 3b8acb2c5a [COFF] Bounds check relocations
Summary:
This would have caught the invalid object file I used in my test case in
r307726. The OOB was only caught by ASan later, which is slow and
doesn't work on some platforms. LLD should do some basic input
validation itself. This check isn't perfect, so relocations can reach
OOB by up to seven bytes, but it's better than what we had and probably
cheap.

Reviewers: ruiu

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D35371

llvm-svn: 307948
2017-07-13 20:29:59 +00:00

63 lines
1.9 KiB
YAML

# Make sure LLD does some light relocation bounds checking.
# RUN: yaml2obj %s -o %t.obj
# RUN: not lld-link %t.obj -entry:main -nodefaultlib -out:%t.exe 2>&1 | FileCheck %s
# CHECK: error: relocation points beyond the end of its parent section
--- !COFF
header:
Machine: IMAGE_FILE_MACHINE_I386
Characteristics: [ ]
sections:
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 16
SectionData: 5589E550C745FC00000000A10000000083C4045DC3
Relocations:
- VirtualAddress: 24
SymbolName: _g
Type: IMAGE_REL_I386_DIR32
- Name: .data
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE ]
Alignment: 4
SectionData: 2A000000
symbols:
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 21
NumberOfRelocations: 1
NumberOfLinenumbers: 0
CheckSum: 662775349
Number: 1
- Name: .data
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 4
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 3482275674
Number: 2
- Name: _main
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: _g
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
...