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fix overread (consuming an extra byte) scanning NAN
[musl]
/
src
/
stdio
/
fputc.c
diff --git
a/src/stdio/fputc.c
b/src/stdio/fputc.c
index
98d0a20
..
6a144a5
100644
(file)
--- a/
src/stdio/fputc.c
+++ b/
src/stdio/fputc.c
@@
-2,9
+2,10
@@
int fputc(int c, FILE *f)
{
- FLOCK(f);
+ if (f->lock < 0 || !__lockfile(f))
+ return putc_unlocked(c, f);
c = putc_unlocked(c, f);
-
FUNLOCK
(f);
+
__unlockfile
(f);
return c;
}