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-rw-r--r--test/asan/TestCases/strcat_strict.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/test/asan/TestCases/strcat_strict.c b/test/asan/TestCases/strcat_strict.c
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+++ b/test/asan/TestCases/strcat_strict.c
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+// Test strict_string_checks option in strcat function
+// RUN: %clang_asan %s -o %t
+// RUN: not %run %t test1 2>&1 | FileCheck %s --check-prefix=CHECK1-NONSTRICT --check-prefix=CHECK1
+// RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=false not %run %t test1 2>&1 | FileCheck %s --check-prefix=CHECK1-NONSTRICT --check-prefix=CHECK1
+// RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t test1 2>&1 | FileCheck %s --check-prefix=CHECK1-STRICT --check-prefix=CHECK1
+// RUN: not %run %t test2 2>&1 | FileCheck %s --check-prefix=CHECK2-NONSTRICT --check-prefix=CHECK2
+// RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=false not %run %t test2 2>&1 | FileCheck %s --check-prefix=CHECK2-NONSTRICT --check-prefix=CHECK2
+// RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t test2 2>&1 | FileCheck %s --check-prefix=CHECK2-STRICT --check-prefix=CHECK2
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+void test1(char *to, int to_size, char *from) {
+ // One of arguments points to not allocated memory.
+ char* r = strcat(to + to_size, from);
+}
+
+void test2(char *to, int to_size, char *from) {
+ // "to" is not zero-terminated.
+ memset(to, 'z', to_size);
+ char* r = strcat(to, from);
+}
+
+int main(int argc, char **argv) {
+ size_t to_size = 100;
+ char *to = (char*)malloc(to_size);
+ size_t from_size = 20;
+ char *from = (char*)malloc(from_size);
+ memset(from, 'z', from_size);
+ from[from_size - 1] = '\0';
+ if (argc != 2) return 1;
+ if (!strcmp(argv[1], "test1")) test1(to, to_size, from);
+ // CHECK1: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
+ // CHECK1-STRICT: READ of size 1
+ // CHECK1-NONSTRICT: WRITE of size 20
+ if (!strcmp(argv[1], "test2")) test2(to, to_size, from);
+ // CHECK2: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
+ // CHECK2-STRICT: READ of size 101
+ // CHECK2-NONSTRICT: WRITE of size 20
+ free(to);
+ free(from);
+ return 0;
+}