[sanitizer] enable getrandom/getentropy on solaris based systems.

Reviewers: vitalybuka

Reviewed-By: vitalybuka

Differential Revision: https://reviews.llvm.org/D156578

Author: devnexen

compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h

@@ -575,12 +575,12 @@
 #define SANITIZER_INTERCEPT_SL_INIT (SI_FREEBSD || SI_NETBSD)
 
 #define SANITIZER_INTERCEPT_GETRANDOM \
-  ((SI_LINUX && __GLIBC_PREREQ(2, 25)) || SI_FREEBSD)
+  ((SI_LINUX && __GLIBC_PREREQ(2, 25)) || SI_FREEBSD || SI_SOLARIS)
 #define SANITIZER_INTERCEPT___CXA_ATEXIT SI_NETBSD
 #define SANITIZER_INTERCEPT_ATEXIT SI_NETBSD
 #define SANITIZER_INTERCEPT_PTHREAD_ATFORK SI_NETBSD
 #define SANITIZER_INTERCEPT_GETENTROPY \
-  ((SI_LINUX && __GLIBC_PREREQ(2, 25)) || SI_FREEBSD)
+  ((SI_LINUX && __GLIBC_PREREQ(2, 25)) || SI_FREEBSD || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_QSORT \
   (SI_POSIX && !SI_IOSSIM && !SI_WATCHOS && !SI_TVOS && !SI_ANDROID)
 #define SANITIZER_INTERCEPT_QSORT_R SI_GLIBC

compiler-rt/test/sanitizer_common/TestCases/Posix/getrandom.c

@@ -9,7 +9,8 @@
 #define __GLIBC_PREREQ(a, b) 0
 #endif
 
-#if (defined(__linux__) && __GLIBC_PREREQ(2, 25)) || defined(__FreeBSD__)
+#if (defined(__linux__) && __GLIBC_PREREQ(2, 25)) || defined(__FreeBSD__) || \
+    (defined(__sun) && defined(__svr4__))
 #define HAS_GETRANDOM
 #endif