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[llvm][utils] Improve the StringRef summary provider #162298

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Merged
da-viper merged 3 commits into from
Oct 24, 2025
Merged

[llvm][utils] Improve the StringRef summary provider #162298

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e3f090b
[llvm][utils] Improve the StringRef summary provider
da-viper Oct 7, 2025
1a911a6
Update llvm/utils/lldbDataFormatters.py
da-viper Oct 23, 2025
2ed4c24
fix format
da-viper Oct 23, 2025
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7 changes: 7 additions & 0 deletions llvm/utils/lldbDataFormatters.py
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Original file line number Diff line number Diff line change
Expand Up @@ -197,6 +197,13 @@ def StringRefSummaryProvider(valobj, internal_dict):
return '""'

data = data_pointer.deref
# StringRef may be uninitialized with length exceeding available memory,
# potentially causing bad_alloc exceptions. Limit the length to max string summary setting.
limit_obj = (
valobj.GetTarget().GetDebugger().GetSetting("target.max-string-summary-length")
)
if limit_obj:
length = min(length, limit_obj.GetUnsignedIntegerValue())
# Get a char[N] type, from the underlying char type.
array_type = data.type.GetArrayType(length)
# Cast the char* string data to a char[N] array.
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