[llvm-bugs] [Bug 52264] New: Consider increasing the size of the static symbolization buffer in sanitizer_common

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=52264

            Bug ID: 52264
           Summary: Consider increasing the size of the static
                    symbolization buffer in sanitizer_common
           Product: compiler-rt
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: compiler-rt
          Assignee: unassignedbugs at nondot.org
          Reporter: andrew.c.morrow at gmail.com
                CC: llvm-bugs at lists.llvm.org

It appears that there are some 16K static buffers for the symbolizer:

-
https://github.com/llvm/llvm-project/blob/12b44bf5ee3eee46062b5f8f208be20edd0b3e06/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_internal.h#L122

-
https://github.com/llvm/llvm-project/blob/12b44bf5ee3eee46062b5f8f208be20edd0b3e06/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_internal.h#L150

I have recently encountered some events where it appears that one or more of
these buffers is not sufficient when symbolizing sanitizer failures, leading to
messages like:

==4094==WARNING: Symbolizer buffer too small

Would it be possible to expand these to something larger, maybe 1M? While no
fixed-sized buffer can handle everything, 16K feels very conservative.

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