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// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix,debug.ExprInspection -verify %s
// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix,alpha.unix,debug.ExprInspection -verify %s
#include "Inputs/system-header-simulator.h"
#include "Inputs/system-header-simulator-for-malloc.h"
void test_getline_null_buffer() {
FILE *F1 = tmpfile();
if (!F1)
return;
char *buffer = NULL;
size_t n = 0;
if (getline(&buffer, &n, F1) > 0) {
char c = buffer[0]; // ok
}
free(buffer);
fclose(F1);
}
void test_getline_malloc_buffer() {
FILE *F1 = tmpfile();
if (!F1)
return;
size_t n = 10;
char *buffer = malloc(n);
char *ptr = buffer;
ssize_t r = getdelim(&buffer, &n, '\r', F1);
// ptr may be dangling
free(ptr); // expected-warning {{Attempt to free released memory}}
free(buffer); // ok
fclose(F1);
}
void test_getline_alloca() {
FILE *F1 = tmpfile();
if (!F1)
return;
size_t n = 10;
char *buffer = alloca(n);
getline(&buffer, &n, F1); // expected-warning {{Memory allocated by alloca() should not be deallocated}}
fclose(F1);
}
void test_getline_invalid_ptr() {
FILE *F1 = tmpfile();
if (!F1)
return;
size_t n = 10;
char *buffer = (char*)test_getline_invalid_ptr;
getline(&buffer, &n, F1); // expected-warning {{Argument to getline() is the address of the function 'test_getline_invalid_ptr', which is not memory allocated by malloc()}}
fclose(F1);
}
void test_getline_leak() {
FILE *F1 = tmpfile();
if (!F1)
return;
char *buffer = NULL;
size_t n = 0;
ssize_t read;
while ((read = getline(&buffer, &n, F1)) != -1) {
printf("%s\n", buffer);
}
fclose(F1); // expected-warning {{Potential memory leak}}
}
void test_getline_stack() {
size_t n = 10;
char buffer[10];
char *ptr = buffer;
FILE *F1 = tmpfile();
if (!F1)
return;
getline(&ptr, &n, F1); // expected-warning {{Argument to getline() is the address of the local variable 'buffer', which is not memory allocated by malloc()}}
}
void test_getline_static() {
static size_t n = 10;
static char buffer[10];
char *ptr = buffer;
FILE *F1 = tmpfile();
if (!F1)
return;
getline(&ptr, &n, F1); // expected-warning {{Argument to getline() is the address of the static variable 'buffer', which is not memory allocated by malloc()}}
}
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