6504c96b1d
For the following code in C mode: https://godbolt.org/z/3eo1MeGhe (There is no warning in C++ mode though). ```c++ struct B { int i : 2; int : 30; // unnamed bit-field }; extern void consume_B(struct B); void bitfield_B_init(void) { struct B b1; b1.i = 1; // b1 is initialized consume_B(b1); // FP: Passed-by-value struct argument contains uninitialized data (e.g., field: '') [core.CallAndMessage] } ```
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
// RUN: %clang_analyze_cc1 %s -verify \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-config core.CallAndMessage:ArgPointeeInitializedness=true \
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// RUN: -analyzer-config core.CallAndMessage:ArgInitializedness=false \
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// RUN: -analyzer-output=plist -o %t.plist
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// RUN: cat %t.plist | FileCheck %s
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// RUN: %clang_analyze_cc1 %s -verify=no-pointee \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-config core.CallAndMessage:ArgPointeeInitializedness=false \
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// RUN: -analyzer-config core.CallAndMessage:ArgInitializedness=false
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// RUN: %clang_analyze_cc1 %s -verify=arg-init \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-config core.CallAndMessage:ArgPointeeInitializedness=false \
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// RUN: -analyzer-config core.CallAndMessage:ArgInitializedness=true
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// no-pointee-no-diagnostics
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void doStuff_pointerToConstInt(const int *u){};
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void pointee_uninit(void) {
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int i;
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int *p = &i;
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doStuff_pointerToConstInt(p); // expected-warning{{1st function call argument is a pointer to uninitialized value [core.CallAndMessage]}}
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}
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// TODO: If this hash ever changes, turn
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// core.CallAndMessage:ArgPointeeInitializedness from a checker option into a
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// checker, as described in the CallAndMessage comments!
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// CHECK: <key>issue_hash_content_of_line_in_context</key>
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// CHECK-SAME: <string>97a74322d64dca40aa57303842c745a1</string>
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typedef struct {
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int i :2;
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int :30; // unnamed bit-field
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} B;
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extern void consume_B(B);
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void bitfield_B_init(void) {
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B b1;
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b1.i = 1; // b1 is initialized
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consume_B(b1);
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}
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void bitfield_B_uninit(void) {
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B b2;
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consume_B(b2); // arg-init-warning{{Passed-by-value struct argument contains uninitialized data (e.g., field: 'i') [core.CallAndMessage]}}
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}
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