[LLD]Fix lld crashes when linker script remove .dynsym section #121488
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@llvm/pr-subscribers-lld Author: None (hstk30-hw) ChangesFix #88650 Full diff: https://github.com/llvm/llvm-project/pull/121488.diff 1 Files Affected:
diff --git a/lld/ELF/SyntheticSections.cpp b/lld/ELF/SyntheticSections.cpp
index baa7a083404fe7..8d98aad50a6ceb 100644
--- a/lld/ELF/SyntheticSections.cpp
+++ b/lld/ELF/SyntheticSections.cpp
@@ -3800,7 +3800,8 @@ VersionTableSection::VersionTableSection(Ctx &ctx)
void VersionTableSection::finalizeContents() {
// At the moment of june 2016 GNU docs does not mention that sh_link field
// should be set, but Sun docs do. Also readelf relies on this field.
- getParent()->link = getPartition(ctx).dynSymTab->getParent()->sectionIndex;
+ if (OutputSection *sec = getPartition(ctx).dynSymTab->getParent())
+ getParent()->link = sec->sectionIndex;
}
size_t VersionTableSection::getSize() const {
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@llvm/pr-subscribers-lld-elf Author: None (hstk30-hw) ChangesFix #88650 Full diff: https://github.com/llvm/llvm-project/pull/121488.diff 1 Files Affected:
diff --git a/lld/ELF/SyntheticSections.cpp b/lld/ELF/SyntheticSections.cpp
index baa7a083404fe7..8d98aad50a6ceb 100644
--- a/lld/ELF/SyntheticSections.cpp
+++ b/lld/ELF/SyntheticSections.cpp
@@ -3800,7 +3800,8 @@ VersionTableSection::VersionTableSection(Ctx &ctx)
void VersionTableSection::finalizeContents() {
// At the moment of june 2016 GNU docs does not mention that sh_link field
// should be set, but Sun docs do. Also readelf relies on this field.
- getParent()->link = getPartition(ctx).dynSymTab->getParent()->sectionIndex;
+ if (OutputSection *sec = getPartition(ctx).dynSymTab->getParent())
+ getParent()->link = sec->sectionIndex;
}
size_t VersionTableSection::getSize() const {
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Fix #88650