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Patch taken from
https://cgit.freebsd.org/src/commit/?id=96fe7c8ab0f65cf829619abd74ae6c126b21e15f
--- libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cpp.orig 2022-11-26 09:47:34 UTC
+++ libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cpp
@@ -45,7 +45,9 @@
#if SANITIZER_FREEBSD
#include <pthread_np.h>
+#include <stdlib.h>
#include <osreldate.h>
+#include <sys/auxv.h>
#include <sys/sysctl.h>
#define pthread_getattr_np pthread_attr_get_np
#endif
@@ -857,7 +859,14 @@ void ReExec() {
void ReExec() {
const char *pathname = "/proc/self/exe";
-#if SANITIZER_NETBSD
+#if SANITIZER_FREEBSD
+ char exe_path[PATH_MAX];
+ if (elf_aux_info(AT_EXECPATH, exe_path, sizeof(exe_path)) == 0) {
+ char link_path[PATH_MAX];
+ if (realpath(exe_path, link_path))
+ pathname = link_path;
+ }
+#elif SANITIZER_NETBSD
static const int name[] = {
CTL_KERN,
KERN_PROC_ARGS,
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