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authorKeith Packard <keithp@keithp.com>2012-11-30 16:01:07 -0800
committerKeith Packard <keithp@keithp.com>2012-11-30 16:01:07 -0800
commit0b65402361f36a0c722977bcb63edb26fda0db28 (patch)
tree435d23c147829f11aac67fd6c30c74dd96f76e8e /src/core/ao_stdio.c
parent0fa9ce23dd63846337872d6d666a469512614d07 (diff)
altos: Make stdio 8-bit clean by making pollchar return int
We were stealing one value (0xff) in the return value from pollchar to indicate 'not ready yet'. Instead of doing that, use the integer value -1 and have pollchar return an int instead of a char. That necessitated cleaning a few other bits to make sure that 0xff wouldn't get promoted to -1 on accident. Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/core/ao_stdio.c')
-rw-r--r--src/core/ao_stdio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/core/ao_stdio.c b/src/core/ao_stdio.c
index 8cf66a23..4a832487 100644
--- a/src/core/ao_stdio.c
+++ b/src/core/ao_stdio.c
@@ -123,7 +123,7 @@ ao_echo(void)
}
int8_t
-ao_add_stdio(char (*pollchar)(void),
+ao_add_stdio(int (*pollchar)(void),
void (*putchar)(char),
void (*flush)(void)) __reentrant
{