[PATCH] D62189: [Sanitizer] Add interceptor for wcsdup
Pavel Labath via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue May 21 05:34:22 PDT 2019
labath created this revision.
labath added reviewers: vitalybuka, eugenis.
Herald added subscribers: delcypher, kubamracek.
Herald added projects: LLVM, Sanitizers.
The wide-string equivalent of strdup. Implementation trivial.
Repository:
rCRT Compiler Runtime
https://reviews.llvm.org/D62189
Files:
lib/sanitizer_common/sanitizer_common_interceptors.inc
lib/sanitizer_common/sanitizer_platform_interceptors.h
test/sanitizer_common/TestCases/Posix/wcsdup.c
Index: test/sanitizer_common/TestCases/Posix/wcsdup.c
===================================================================
--- /dev/null
+++ test/sanitizer_common/TestCases/Posix/wcsdup.c
@@ -0,0 +1,15 @@
+// RUN: %clang %s -o %t && %run %t 2>&1
+
+#include <assert.h>
+#include <stdlib.h>
+#include <wchar.h>
+
+int main(int argc, char **argv) {
+ wchar_t *buff = wcsdup(L"foo");
+ assert(buff[0] == L'f');
+ assert(buff[1] == L'o');
+ assert(buff[2] == L'o');
+ assert(buff[3] == L'\0');
+ free(buff);
+ return 0;
+}
Index: lib/sanitizer_common/sanitizer_platform_interceptors.h
===================================================================
--- lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -492,6 +492,7 @@
#define SANITIZER_INTERCEPT_MALLOC_USABLE_SIZE (!SI_MAC && !SI_OPENBSD)
#define SANITIZER_INTERCEPT_MCHECK_MPROBE SI_LINUX_NOT_ANDROID
#define SANITIZER_INTERCEPT_WCSCAT SI_POSIX
+#define SANITIZER_INTERCEPT_WCSDUP SI_POSIX
#define SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION (!SI_WINDOWS && SI_NOT_FUCHSIA)
#define SANITIZER_INTERCEPT_BSD_SIGNAL SI_ANDROID
Index: lib/sanitizer_common/sanitizer_common_interceptors.inc
===================================================================
--- lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -6734,6 +6734,23 @@
#define INIT_WCSCAT
#endif
+#if SANITIZER_INTERCEPT_WCSDUP
+INTERCEPTOR(wchar_t *, wcsdup, wchar_t *s) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, wcsdup, s);
+ SIZE_T len = REAL(wcslen)(s);
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (len + 1));
+ wchar_t *result = REAL(wcsdup)(s);
+ if (result)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(wchar_t) * (len + 1));
+ return result;
+}
+
+#define INIT_WCSDUP COMMON_INTERCEPT_FUNCTION(wcsdup);
+#else
+#define INIT_WCSDUP
+#endif
+
#if SANITIZER_INTERCEPT_STRXFRM
static SIZE_T RealStrLen(const char *str) { return REAL(strlen)(str); }
@@ -9765,6 +9782,7 @@
INIT_GETLOADAVG;
INIT_WCSLEN;
INIT_WCSCAT;
+ INIT_WCSDUP;
INIT_WCSXFRM;
INIT___WCSXFRM_L;
INIT_ACCT;
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