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-rw-r--r--test/asan/TestCases/strcmp_strict.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/test/asan/TestCases/strcmp_strict.c b/test/asan/TestCases/strcmp_strict.c
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+++ b/test/asan/TestCases/strcmp_strict.c
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+// Test strict_string_checks option in strcmp function
+// RUN: %clang_asan %s -o %t && %run %t 2>&1
+// RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=false %run %t 2>&1
+// RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t 2>&1 | FileCheck %s
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char **argv) {
+ size_t size = 100;
+ char fill = 'o';
+ char *s1 = (char*)malloc(size);
+ memset(s1, fill, size);
+ char *s2 = (char*)malloc(size);
+ memset(s2, fill, size);
+ s1[size - 1] = 'z';
+ s2[size - 1] = 'x';
+ int r = strcmp(s1, s2);
+ // CHECK: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
+ // CHECK: READ of size 101
+ assert(r == 1);
+ free(s1);
+ free(s2);
+ return 0;
+}