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[yaml2obj] Don't use uninitialized Type #123274

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Merged
merged 18 commits into from
Jan 23, 2025
Merged

[yaml2obj] Don't use uninitialized Type #123274

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[𝘀𝗽𝗿] changes to main this commit is based on
vitalybuka Jan 17, 2025
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[𝘀𝗽𝗿] initial version
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[𝘀𝗽𝗿] changes introduced through rebase
JDevlieghere Jan 17, 2025
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[𝘀𝗽𝗿] changes introduced through rebase
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remove comment and move initialization
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2 changes: 1 addition & 1 deletion llvm/lib/ObjectYAML/ELFYAML.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1588,7 +1588,7 @@ static bool isInteger(StringRef Val) {

void MappingTraits<std::unique_ptr<ELFYAML::Chunk>>::mapping(
IO &IO, std::unique_ptr<ELFYAML::Chunk> &Section) {
ELFYAML::ELF_SHT Type;
ELFYAML::ELF_SHT Type = ELF::SHT_NULL;
StringRef TypeStr;
if (IO.outputting()) {
if (auto *S = dyn_cast<ELFYAML::Section>(Section.get()))
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20 changes: 18 additions & 2 deletions llvm/test/tools/yaml2obj/ELF/section-type.yaml
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
# RUN: yaml2obj %s -o %t
# RUN: llvm-readobj --sections %t | FileCheck %s
# RUN: yaml2obj %s --docnum=1 -o %t1
# RUN: llvm-readobj --sections %t1 | FileCheck %s

# CHECK: Name: enum
# CHECK: Type: SHT_PROGBITS
Expand All @@ -25,3 +25,19 @@ Sections:
Type: 0xabcd
- Name: decimal
Type: 1234

## Check that we can handle unknown section and chunk types.
# RUN: not yaml2obj %s --docnum=2 -DSECTION_TYPE=UNKNOWN_TYPE -o %t2 2>&1 | FileCheck %s --check-prefix=UNKNOWN-TYPE
# RUN: not yaml2obj %s --docnum=2 -DSECTION_TYPE=SHT_UNKNOWN_TYPE -o %t2 2>&1 | FileCheck %s --check-prefix=UNKNOWN-TYPE

# UNKNOWN-TYPE: error: invalid hex32 number

--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: [[SECTION_TYPE]]

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