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typedef struct FILE FILE;
FILE* fopen (const char*, const char*);
int fclose (FILE*);
char *fgets (char *, int, FILE *);
#define NULL ((void *)0)
void f0(const char *str)
{
FILE * fp = fopen(str, "r"); /* { dg-message "opened here" } */
char buf[10];
fgets(buf, 10, fp);
} /* { dg-warning "leak of FILE 'fp'" } */
void f1(const char *str)
{
FILE * fp = fopen(str, "r"); /* { dg-message "opened here" } */
char buf[10];
while (fgets(buf, 10, fp) != NULL)
{
/* Do something with buf */
}
} /* { dg-warning "leak of FILE 'fp'" } */
void f2(const char *str, int flag)
{
FILE * fp = fopen(str, "r"); /* { dg-message "opened here" } */
char buf[10];
while (fgets(buf, 10, fp) != NULL)
{
/* Do something with buf */
}
if (flag) /* { dg-message "when 'flag == 0'" } */
fclose(fp);
} /* { dg-warning "leak of FILE 'fp'" } */
extern void called_by_f3( FILE * fp);
void f3(const char *str)
{
FILE * fp = fopen(str, "r");
char buf[10];
while (fgets(buf, 10, fp) != NULL)
{
/* Do something with buf */
}
/* Not sure if fclose executed by called_by_f3 or not. Say nothing */
called_by_f3(fp);
}
void f4(const char *str)
{
FILE * fp = fopen(str, "r");
char buf[10];
while (fgets(buf, 10, fp) != NULL)
{
/* Do something with buf */
}
/* Nothing to say here. */
fclose(fp);
}
void main(int argc, const char * argv[])
{
FILE * fp = fopen(argv[0], "r");
char buf[10];
while (fgets(buf, 10, fp) != NULL)
{
/* Do something with buf */
}
/* Nothing to say here, because we are in main. */
}
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