https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89409
--- Comment #5 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Wed Feb 20 16:20:50 2019 New Revision: 269042 URL: https://gcc.gnu.org/viewcvs?rev=269042&root=gcc&view=rev Log: libsanitizer: Restore internal_readlink for x32 Cherry-pick compiler-rt revision 354451: r316591 has @@ -389,13 +383,11 @@ uptr internal_dup2(int oldfd, int newfd) { } uptr internal_readlink(const char *path, char *buf, uptr bufsize) { -#if SANITIZER_NETBSD - return internal_syscall_ptr(SYSCALL(readlink), path, buf, bufsize); -#elif SANITIZER_USES_CANONICAL_LINUX_SYSCALLS +#if SANITIZER_USES_CANONICAL_LINUX_SYSCALLS return internal_syscall(SYSCALL(readlinkat), AT_FDCWD, (uptr)path, (uptr)buf, bufsize); #else - return internal_syscall(SYSCALL(readlink), (uptr)path, (uptr)buf, bufsize); + return internal_syscall_ptr(SYSCALL(readlink), path, buf, bufsize); #endif } which dropped the (uptr) cast and broke x32. This patch puts back the (uptr) cast to restore x32 and fixes: https://bugs.llvm.org/show_bug.cgi?id=40783 Differential Revision: https://reviews.llvm.org/D58413 PR sanitizer/89409 * sanitizer_common/sanitizer_linux.cc (internal_readlink): Cherry-pick compiler-rt r354451. Modified: trunk/libsanitizer/ChangeLog trunk/libsanitizer/sanitizer_common/sanitizer_linux.cc
