4f0436dd15
Main reason for this change is that these checkers were implemented in the same class but had different dependency ordering. (NonNullParamChecker should run before StdCLibraryFunctionArgs to get more special warning about null arguments, but the apiModeling.StdCLibraryFunctions was a modeling checker that should run before other non-modeling checkers. The modeling checker changes state in a way that makes it impossible to detect a null argument by NonNullParamChecker.) To make it more simple, the modeling part is removed as separate checker and can be only used if checker StdCLibraryFunctions is turned on, that produces the warnings too. Modeling the functions without bug detection (for invalid argument) is not possible. The modeling of standard functions does not happen by default from this change on. Reviewed By: Szelethus Differential Revision: https://reviews.llvm.org/D151225
31 lines
1.9 KiB
C
31 lines
1.9 KiB
C
// Check the bugpath related to the reports.
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// RUN: %clang_analyze_cc1 %s \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-checker=alpha.unix.StdCLibraryFunctions \
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// RUN: -analyzer-checker=debug.StdCLibraryFunctionsTester \
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// RUN: -analyzer-checker=debug.ExprInspection \
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// RUN: -triple x86_64-unknown-linux-gnu \
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// RUN: -analyzer-output=text \
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// RUN: -verify=bugpath
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typedef typeof(sizeof(int)) size_t;
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int __buf_size_arg_constraint(const void *, size_t);
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void test_buf_size_concrete(void) {
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char buf[3]; // bugpath-note{{'buf' initialized here}}
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int s = 4; // bugpath-note{{'s' initialized to 4}}
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__buf_size_arg_constraint(buf, s); // \
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// bugpath-warning{{The 1st argument to '__buf_size_arg_constraint' is a buffer with size 3 but should be a buffer with size equal to or greater than the value of the 2nd argument}} \
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// bugpath-note{{The 1st argument to '__buf_size_arg_constraint' is a buffer with size 3 but should be a buffer with size equal to or greater than the value of the 2nd argument}}
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}
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int __buf_size_arg_constraint_mul(const void *, size_t, size_t);
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void test_buf_size_concrete_with_multiplication(void) {
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short buf[3]; // bugpath-note{{'buf' initialized here}}
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int s1 = 4; // bugpath-note{{'s1' initialized to 4}}
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int s2 = sizeof(short); // bugpath-note{{'s2' initialized to}}
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__buf_size_arg_constraint_mul(buf, s1, s2); // \
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// bugpath-warning{{The 1st argument to '__buf_size_arg_constraint_mul' is a buffer with size 6 but should be a buffer with size equal to or greater than the value of the 2nd argument (which is 4) times the 3rd argument (which is 2)}} \
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// bugpath-note{{The 1st argument to '__buf_size_arg_constraint_mul' is a buffer with size 6 but should be a buffer with size equal to or greater than the value of the 2nd argument (which is 4) times the 3rd argument (which is 2)}}
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}
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