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| author | smanna12 <soumi.manna@intel.com> | 2024-03-27 17:17:27 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-03-27 17:17:27 -0500 |
| commit | 4c2f68840e984b0f111779c46845ac00e3a7547d (patch) | |
| tree | 73bdd268c2602090c2312ecff658d11e86391eec /clang/lib/CodeGen/CodeGenModule.cpp | |
| parent | 8a75faf4717b8258b59cf9fbb4cbd2f189114d3f (diff) | |
| download | llvm-4c2f68840e984b0f111779c46845ac00e3a7547d.zip llvm-4c2f68840e984b0f111779c46845ac00e3a7547d.tar.gz llvm-4c2f68840e984b0f111779c46845ac00e3a7547d.tar.bz2 | |
[CLANG] Fix potential integer overflow value in getRVVTypeSize() (#86810)
In getRVVTypeSize(clang::ASTContext &, clang::BuiltinType const *)
potential integer overflow occurs on expression VScale->first * MinElts
with type unsigned int (32 bits, unsigned) is evaluated using 32-bit
arithmetic, and then used in a context that expects an expression of
type uint64_t (64 bits, unsigned).
To avoid integer overflow, this patch changes the types of variables
MinElts and EltSize to uint64_t instead of the cast.
The change matches what was originally done in https://github.com/llvm/llvm-project/commit/7372c0d46d2185017c509eb30910b102b4f9cdaa. Looks like the revert happened in https://github.com/llvm/llvm-project/commit/c92ad411f2f94d8521cd18abcb37285f9a390ecb
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.cpp')
0 files changed, 0 insertions, 0 deletions