Mercurial > hg > CbC > CbC_llvm
view clang/test/Analysis/range_casts.c @ 236:c4bab56944e8 llvm-original
LLVM 16
author | kono |
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date | Wed, 09 Nov 2022 17:45:10 +0900 (2022-11-09) |
parents | 1d019706d866 |
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// This test checks that intersecting ranges does not cause 'system is over constrained' assertions in the case of eg: 32 bits unsigned integers getting their range from 64 bits signed integers. // RUN: %clang_analyze_cc1 -triple x86_64-pc-linux-gnu -analyzer-checker=core,debug.ExprInspection -verify %s void clang_analyzer_warnIfReached(void); void f1(long foo) { unsigned index = -1; if (index < foo) index = foo; if (index + 1 == 0) // because of foo range, index is in range [0; UINT_MAX] clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f2(unsigned long foo) { int index = -1; if (index < foo) index = foo; // index equals ULONG_MAX if (index + 1 == 0) clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // no-warning } void f3(unsigned long foo) { unsigned index = -1; if (index < foo) index = foo; if (index + 1 == 0) clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f4(long foo) { int index = -1; if (index < foo) index = foo; if (index + 1 == 0) clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f5(long foo) { unsigned index = -1; if (index < foo) index = foo; if (index == -1) clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f6(long foo) { unsigned index = -1; if (index < foo) index = foo; if (index == -1) clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f7(long foo) { unsigned index = -1; if (index < foo) index = foo; if (index - 1 == 0) // Was not reached prior fix. clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f8(long foo) { unsigned index = -1; if (index < foo) index = foo; if (index + 1L == 0L) clang_analyzer_warnIfReached(); // no-warning else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f9(long foo) { unsigned index = -1; if (index < foo) index = foo; if (index - 1L == 0L) // Was not reached prior fix. clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f10(long foo) { unsigned index = -1; if (index < foo) index = foo; if (index + 1 == 0L) clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f11(long foo) { unsigned index = -1; if (index < foo) index = foo; if (index + 1UL == 0L) clang_analyzer_warnIfReached(); // no-warning else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f12(long foo) { unsigned index = -1; if (index < foo) index = foo; if (index - 1UL == 0L) // Was not reached prior fix. clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f13(int foo) { unsigned short index = -1; if (index < foo) index = foo; if (index + 1 == 0) clang_analyzer_warnIfReached(); // no-warning else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f14(long foo) { unsigned index = -1; if (index < foo) index = foo; long bar = foo; if (index + 1 == 0) clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} } void f15(long foo) { unsigned index = -1; if (index < foo) index = foo; unsigned int tmp = index + 1; if (tmp == 0) clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} else clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} }