Currently the load_elf code assembles the ROM blob name into a
local 128 byte fixed-size array. Use g_strdup_printf() instead so
that we don't truncate the pathname if it happens to be long.
(This matters mostly for monitor 'info roms' output and for the
error messages if ROM blobs overlap.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201129203923.10622-4-peter.maydell@linaro.org
---
 include/hw/elf_ops.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/hw/elf_ops.h b/include/hw/elf_ops.h
index 6fdff3dced5..53e0152af53 100644
--- a/include/hw/elf_ops.h
+++ b/include/hw/elf_ops.h
@@ -330,7 +330,6 @@ static int glue(load_elf, SZ)(const char *name, int fd,
     uint64_t addr, low = (uint64_t)-1, high = 0;
     GMappedFile *mapped_file = NULL;
     uint8_t *data = NULL;
-    char label[128];
     int ret = ELF_LOAD_FAILED;
 
     if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
@@ -544,7 +543,8 @@ static int glue(load_elf, SZ)(const char *name, int fd,
              */
             if (mem_size != 0) {
                 if (load_rom) {
-                    snprintf(label, sizeof(label), "phdr #%d: %s", i, name);
+                    g_autofree char *label =
+                        g_strdup_printf("phdr #%d: %s", i, name);
 
                     /*
                      * rom_add_elf_program() takes its own reference to
-- 
2.20.1