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On exit from the loop, char_ptr had not been updated to match block_ptr,
resulting in erroneous results. Moving all updates out of the loop fixes
that.
Adjust derefences to always be inside bounds checks.
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Tests can be at top-level or inside an anonymous namespace,
doesn't matter. But putting their helper code inside anonymous
namespaces both makes the code compatible with compiling using
-Wmissing-declarations and might let the compiler optimize the
test good a bit better.
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LIBC_HAS_SANITIZER (which is defined if ASan, MSan, or UBSan is enabled)
is currently used to implicitly disable null checks, normally enabled
via LIBC_ADD_NULL_CHECKS config value. Remove this condition, and rely
purely on the config value instead:
* LIBC_HAS_SANITIZER will be true even for UBSan modes which doesn't
rely on null checks at all (e.g. -fsanitize=alignment)
* null checks today (implemented via __builtin_trap) should function
normally today even when sanitizer is enabled - trap is still a trap
* tests have been migrated to WITH_SIGNAL(-1) which doesn't prescript a
particular signal / exit-code, and thus should pass even if sanitizers
override the default ones.
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Fixes #111546
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Co-authored-by: alyyelashram <150528548+alyyelashram@users.noreply.github.com>
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This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079
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This part of the effort to make all test related pieces into the `test`
directory. This helps is excluding test related pieces in a straight
forward manner if LLVM_INCLUDE_TESTS is OFF. Future patches will also move
the MPFR wrapper and testutils into the 'test' directory.
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Summary:
Having a consistent prefix makes selecting all of the llvm libc tests
easier on any platform that is also using the gtest framework.
This also modifies the TEST and TEST_F macros to enforce this change
moving forward.
Reviewers: sivachandra
Subscribers:
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Summary: [libc] Adds strchr implementation with unit tests. Fixes signed character bug in memchr.
Reviewers: sivachandra, PaulkaToast
Reviewed By: sivachandra
Subscribers: mgorny, tschuett, ecnelises, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D83353
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