ba816326f3
This patch adds the CloneDetector class which allows searching source code for clones. For every statement or group of statements within a compound statement, CloneDetector computes a hash value, and finds clones by detecting identical hash values. This initial patch only provides a simple hashing mechanism that hashes the kind of each sub-statement. This patch also adds CloneChecker - a simple static analyzer checker that uses CloneDetector to report copy-pasted code. Patch by Raphael Isemann! Differential Revision: https://reviews.llvm.org/D20795 llvm-svn: 276782
28 lines
567 B
C++
28 lines
567 B
C++
// RUN: %clang_cc1 -analyze -std=c++11 -analyzer-checker=alpha.clone.CloneChecker -verify %s
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// This tests if sub-sequences can match with normal sequences.
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void log2(int a);
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void log();
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int max(int a, int b) {
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log2(a);
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log(); // expected-warning{{Detected code clone.}}
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if (a > b)
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return a;
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return b;
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}
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int maxClone(int a, int b) {
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log(); // expected-note{{Related code clone is here.}}
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if (a > b)
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return a;
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return b;
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}
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// Functions below are not clones and should not be reported.
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int foo(int a, int b) { // no-warning
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return a + b;
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}
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