linux-user/elfload: Fix GCC 9 build warnings

Fix this warning when building with GCC9 on Fedora 30:
In function ‘strncpy’,
    inlined from ‘fill_psinfo’ at /home/alistair/qemu/linux-user/elfload.c:3208:12,
    inlined from ‘fill_note_info’ at /home/alistair/qemu/linux-user/elfload.c:3390:5,
    inlined from ‘elf_core_dump’ at /home/alistair/qemu/linux-user/elfload.c:3539:9:
/usr/include/bits/string_fortified.h:106:10: error: ‘__builtin_strncpy’ specified bound 16 equals destination size [-Werror=stringop-truncation]
  106 |   return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <c4d2b1de9efadcf1c900b91361af9302823a72a9.1556666645.git.alistair.francis@wdc.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index c1a26021f8d790513efa3d64741c0ec5ad420222..d08fe2346683d3a86a1b294745333bd12f7fc5a5 100644 (file)
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -2872,7 +2872,7 @@ struct target_elf_prpsinfo {
     target_gid_t pr_gid;
     target_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
     /* Lots missing */
-    char    pr_fname[16];           /* filename of executable */
+    char    pr_fname[16] QEMU_NONSTRING; /* filename of executable */
     char    pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
 };