| // RUN: %clang_analyze_cc1 -triple i386-apple-darwin10 -analyzer-checker=core.builtin,debug.ExprInspection,unix.cstring -verify %s |
| |
| typedef unsigned long size_t; |
| |
| struct S { |
| struct S3 { |
| int y[10]; |
| }; |
| struct S2 : S3 { |
| int *x; |
| } s2[10]; |
| int z; |
| }; |
| |
| |
| void clang_analyzer_explain(int); |
| void clang_analyzer_explain(void *); |
| void clang_analyzer_explain(S); |
| |
| size_t clang_analyzer_getExtent(void *); |
| |
| size_t strlen(const char *); |
| |
| int conjure(); |
| S conjure_S(); |
| |
| int glob; |
| static int stat_glob; |
| void *glob_ptr; |
| |
| // Test strings are regex'ed because we need to match exact string |
| // rather than a substring. |
| |
| void test_1(int param, void *ptr) { |
| clang_analyzer_explain(&glob); // expected-warning-re{{{{^pointer to global variable 'glob'$}}}} |
| clang_analyzer_explain(param); // expected-warning-re{{{{^argument 'param'$}}}} |
| clang_analyzer_explain(ptr); // expected-warning-re{{{{^argument 'ptr'$}}}} |
| if (param == 42) |
| clang_analyzer_explain(param); // expected-warning-re{{{{^signed 32-bit integer '42'$}}}} |
| } |
| |
| void test_2(char *ptr, int ext) { |
| clang_analyzer_explain((void *) "asdf"); // expected-warning-re{{{{^pointer to element of type 'char' with index 0 of string literal "asdf"$}}}} |
| clang_analyzer_explain(strlen(ptr)); // expected-warning-re{{{{^metadata of type 'unsigned long' tied to pointee of argument 'ptr'$}}}} |
| clang_analyzer_explain(conjure()); // expected-warning-re{{{{^symbol of type 'int' conjured at statement 'conjure\(\)'$}}}} |
| clang_analyzer_explain(glob); // expected-warning-re{{{{^value derived from \(symbol of type 'int' conjured at statement 'conjure\(\)'\) for global variable 'glob'$}}}} |
| clang_analyzer_explain(glob_ptr); // expected-warning-re{{{{^value derived from \(symbol of type 'int' conjured at statement 'conjure\(\)'\) for global variable 'glob_ptr'$}}}} |
| clang_analyzer_explain(clang_analyzer_getExtent(ptr)); // expected-warning-re{{{{^extent of pointee of argument 'ptr'$}}}} |
| int *x = new int[ext]; |
| clang_analyzer_explain(x); // expected-warning-re{{{{^pointer to element of type 'int' with index 0 of heap segment that starts at symbol of type 'int \*' conjured at statement 'new int \[ext\]'$}}}} |
| // Sic! What gets computed is the extent of the element-region. |
| clang_analyzer_explain(clang_analyzer_getExtent(x)); // expected-warning-re{{{{^signed 32-bit integer '4'$}}}} |
| delete[] x; |
| } |
| |
| void test_3(S s) { |
| clang_analyzer_explain(&s); // expected-warning-re{{{{^pointer to parameter 's'$}}}} |
| clang_analyzer_explain(s.z); // expected-warning-re{{{{^initial value of field 'z' of parameter 's'$}}}} |
| clang_analyzer_explain(&s.s2[5].y[3]); // expected-warning-re{{{{^pointer to element of type 'int' with index 3 of field 'y' of base object 'S::S3' inside element of type 'struct S::S2' with index 5 of field 's2' of parameter 's'$}}}} |
| if (!s.s2[7].x) { |
| clang_analyzer_explain(s.s2[7].x); // expected-warning-re{{{{^concrete memory address '0'$}}}} |
| // FIXME: we need to be explaining '1' rather than '0' here; not explainer bug. |
| clang_analyzer_explain(s.s2[7].x + 1); // expected-warning-re{{{{^concrete memory address '0'$}}}} |
| } |
| } |
| |
| void test_4(int x, int y) { |
| int z; |
| static int stat; |
| clang_analyzer_explain(x + 1); // expected-warning-re{{{{^\(argument 'x'\) \+ 1$}}}} |
| clang_analyzer_explain(1 + y); // expected-warning-re{{{{^\(argument 'y'\) \+ 1$}}}} |
| clang_analyzer_explain(x + y); // expected-warning-re{{{{^unknown value$}}}} |
| clang_analyzer_explain(z); // expected-warning-re{{{{^undefined value$}}}} |
| clang_analyzer_explain(&z); // expected-warning-re{{{{^pointer to local variable 'z'$}}}} |
| clang_analyzer_explain(stat); // expected-warning-re{{{{^signed 32-bit integer '0'$}}}} |
| clang_analyzer_explain(&stat); // expected-warning-re{{{{^pointer to static local variable 'stat'$}}}} |
| clang_analyzer_explain(stat_glob); // expected-warning-re{{{{^initial value of global variable 'stat_glob'$}}}} |
| clang_analyzer_explain(&stat_glob); // expected-warning-re{{{{^pointer to global variable 'stat_glob'$}}}} |
| clang_analyzer_explain((int[]){1, 2, 3}); // expected-warning-re{{{{^pointer to element of type 'int' with index 0 of temporary object constructed at statement '\(int \[3\]\)\{1, 2, 3\}'$}}}} |
| } |
| |
| namespace { |
| class C { |
| int x[10]; |
| |
| public: |
| void test_5(int i) { |
| clang_analyzer_explain(this); // expected-warning-re{{{{^pointer to 'this' object$}}}} |
| clang_analyzer_explain(&x[i]); // expected-warning-re{{{{^pointer to element of type 'int' with index 'argument 'i'' of field 'x' of 'this' object$}}}} |
| clang_analyzer_explain(__builtin_alloca(i)); // expected-warning-re{{{{^pointer to region allocated by '__builtin_alloca\(i\)'$}}}} |
| } |
| }; |
| } // end of anonymous namespace |
| |
| void test_6() { |
| clang_analyzer_explain(conjure_S()); // expected-warning-re{{{{^lazily frozen compound value of temporary object constructed at statement 'conjure_S\(\)'$}}}} |
| clang_analyzer_explain(conjure_S().z); // expected-warning-re{{{{^value derived from \(symbol of type 'struct S' conjured at statement 'conjure_S\(\)'\) for field 'z' of temporary object constructed at statement 'conjure_S\(\)'$}}}} |
| } |