X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fao_stdio.c;h=78bbd3c3dab3e3d52d0731be50827e983c642dcb;hb=7c2e4114a3a43f919a7a6c967d3f16e5d630f90f;hp=7bc416e1cf2a35ccce874033f61bf583e2f93830;hpb=0b483233118673cbc2cda1be6acd379df82bc95a;p=fw%2Faltos

diff --git a/src/ao_stdio.c b/src/ao_stdio.c
index 7bc416e1..78bbd3c3 100644
--- a/src/ao_stdio.c
+++ b/src/ao_stdio.c
@@ -38,13 +38,14 @@ putchar(char c)
 void
 flush(void)
 {
-	stdios[ao_cur_stdio].flush();
+	if (stdios[ao_cur_stdio].flush)
+		stdios[ao_cur_stdio].flush();
 }
 
 __xdata uint8_t ao_stdin_ready;
 
 char
-getchar(void) __reentrant
+getchar(void) __reentrant __critical
 {
 	char c;
 	int8_t stdio = ao_cur_stdio;