91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
// RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.unix.SimpleStream -verify %s
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#include "Inputs/system-header-simulator-for-simple-stream.h"
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void checkDoubleFClose(int *Data) {
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FILE *F = fopen("myfile.txt", "w");
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if (F != 0) {
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fputs ("fopen example", F);
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if (!Data)
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fclose(F);
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else
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fputc(*Data, F);
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fclose(F); // expected-warning {{Closing a previously closed file stream}}
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}
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}
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int checkLeak(int *Data) {
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FILE *F = fopen("myfile.txt", "w");
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if (F != 0) {
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fputs ("fopen example", F);
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}
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if (Data) // expected-warning {{Opened file is never closed; potential resource leak}}
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return *Data;
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else
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return 0;
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}
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void checkLeakFollowedByAssert(int *Data) {
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FILE *F = fopen("myfile.txt", "w");
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if (F != 0) {
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fputs ("fopen example", F);
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if (!Data)
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exit(0);
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fclose(F);
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}
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}
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void CloseOnlyOnValidFileHandle() {
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FILE *F = fopen("myfile.txt", "w");
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if (F)
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fclose(F);
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int x = 0; // no warning
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}
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void leakOnEnfOfPath1(int *Data) {
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FILE *F = fopen("myfile.txt", "w");
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} // expected-warning {{Opened file is never closed; potential resource leak}}
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void leakOnEnfOfPath2(int *Data) {
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FILE *F = fopen("myfile.txt", "w");
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return; // expected-warning {{Opened file is never closed; potential resource leak}}
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}
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FILE *leakOnEnfOfPath3(int *Data) {
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FILE *F = fopen("myfile.txt", "w");
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return F;
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}
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void myfclose(FILE *F);
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void SymbolEscapedThroughFunctionCall() {
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FILE *F = fopen("myfile.txt", "w");
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myfclose(F);
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return; // no warning
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}
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FILE *GlobalF;
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void SymbolEscapedThroughAssignmentToGloabl() {
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FILE *F = fopen("myfile.txt", "w");
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GlobalF = F;
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return; // no warning
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}
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void SymbolDoesNotEscapeThoughStringAPIs(char *Data) {
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FILE *F = fopen("myfile.txt", "w");
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fputc(*Data, F);
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return; // expected-warning {{Opened file is never closed; potential resource leak}}
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}
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void passConstPointer(const FILE * F);
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void testPassConstPointer() {
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FILE *F = fopen("myfile.txt", "w");
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passConstPointer(F);
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return; // expected-warning {{Opened file is never closed; potential resource leak}}
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}
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void testPassToSystemHeaderFunctionIndirectly() {
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FileStruct fs;
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fs.p = fopen("myfile.txt", "w");
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fakeSystemHeaderCall(&fs); // invalidates fs, making fs.p unreachable
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} // no-warning
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