With printf(), use PRIu64 with a cast to uint64_t instead

of %zu, because some pre-C99 libc versions don't support %zu.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/lzmadec/lzmadec.c b/src/lzmadec/lzmadec.c
index 93eed090..fef49249 100644
--- a/src/lzmadec/lzmadec.c
+++ b/src/lzmadec/lzmadec.c
@@ -108,10 +108,12 @@ help(void)
 "\n"
 "With no FILE, or when FILE is -, read standard input.\n"
 "\n"
-"On this configuration, the tool will use about %zu MiB of memory at maximum.\n"
+"On this configuration, the tool will use about %" PRIu64
+		" MiB of memory at maximum.\n"
 "\n"
 "Report bugs to <" PACKAGE_BUGREPORT "> (in English or Finnish).\n",
-		argv0, (mem_limit + 512 * 1024) / (1024 * 1024));
+		argv0, (uint64_t)((mem_limit + 512 * 1024) / (1024 * 1024)));
+		// Using PRIu64 above instead of %zu to support pre-C99 libc.
 	exit(0);
 }