Merge pull request #2032 from ghaerr/tinyprintf

[libc] Add flush destructor function to tiny_printf.c
ghaerr · Sep 20, 2024 · d0ff130 · d0ff130
2 parents 797924d + e675aed
commit d0ff130
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/elkscmd/lib/tiny_vfprintf.c b/elkscmd/lib/tiny_vfprintf.c
@@ -19,6 +19,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <string.h>
+#include <sys/rtinit.h>
 
 static unsigned char bufout[80];
 static unsigned char buferr[80];
@@ -49,6 +50,15 @@ FILE  stderr[1] =
    }
 };
 
+/* name clash with stdio/init.c if __stdio_fini name used */
+#pragma GCC diagnostic ignored "-Wprio-ctor-dtor"
+DESTRUCTOR(__exit_flush, _INIT_PRI_STDIO);
+void __exit_flush(void)
+{
+   fflush(stdout);
+   fflush(stderr);
+}
+
 int fflush(FILE *fp)
 {
    int len;