80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
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// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.unix.Stream -analyzer-output text -verify %s
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#include "Inputs/system-header-simulator.h"
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void check_note_at_correct_open() {
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FILE *F1 = tmpfile(); // expected-note {{Stream opened here}}
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if (!F1)
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// expected-note@-1 {{'F1' is non-null}}
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// expected-note@-2 {{Taking false branch}}
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return;
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FILE *F2 = tmpfile();
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if (!F2) {
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// expected-note@-1 {{'F2' is non-null}}
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// expected-note@-2 {{Taking false branch}}
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fclose(F1);
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return;
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}
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rewind(F2);
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fclose(F2);
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rewind(F1);
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}
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// expected-warning@-1 {{Opened stream never closed. Potential resource leak}}
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// expected-note@-2 {{Opened stream never closed. Potential resource leak}}
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void check_note_fopen() {
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FILE *F = fopen("file", "r"); // expected-note {{Stream opened here}}
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if (!F)
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// expected-note@-1 {{'F' is non-null}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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// expected-warning@-1 {{Opened stream never closed. Potential resource leak}}
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// expected-note@-2 {{Opened stream never closed. Potential resource leak}}
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void check_note_freopen() {
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FILE *F = fopen("file", "r"); // expected-note {{Stream opened here}}
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if (!F)
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// expected-note@-1 {{'F' is non-null}}
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// expected-note@-2 {{Taking false branch}}
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return;
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F = freopen(0, "w", F); // expected-note {{Stream reopened here}}
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if (!F)
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// expected-note@-1 {{'F' is non-null}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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// expected-warning@-1 {{Opened stream never closed. Potential resource leak}}
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// expected-note@-2 {{Opened stream never closed. Potential resource leak}}
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void check_note_leak_2(int c) {
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FILE *F1 = fopen("foo1.c", "r"); // expected-note {{Stream opened here}}
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if (!F1)
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// expected-note@-1 {{'F1' is non-null}}
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// expected-note@-2 {{Taking false branch}}
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// expected-note@-3 {{'F1' is non-null}}
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// expected-note@-4 {{Taking false branch}}
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return;
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FILE *F2 = fopen("foo2.c", "r"); // expected-note {{Stream opened here}}
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if (!F2) {
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// expected-note@-1 {{'F2' is non-null}}
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// expected-note@-2 {{Taking false branch}}
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// expected-note@-3 {{'F2' is non-null}}
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// expected-note@-4 {{Taking false branch}}
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fclose(F1);
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return;
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}
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if (c)
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// expected-note@-1 {{Assuming 'c' is not equal to 0}}
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// expected-note@-2 {{Taking true branch}}
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// expected-note@-3 {{Assuming 'c' is not equal to 0}}
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// expected-note@-4 {{Taking true branch}}
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return;
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// expected-warning@-1 {{Opened stream never closed. Potential resource leak}}
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// expected-note@-2 {{Opened stream never closed. Potential resource leak}}
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// expected-warning@-3 {{Opened stream never closed. Potential resource leak}}
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// expected-note@-4 {{Opened stream never closed. Potential resource leak}}
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fclose(F1);
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fclose(F2);
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}
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