From 8fc7b5965ac6a000c93c7362276a6a7b193647f4 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 27 Oct 2012 19:52:40 -0400 Subject: separate getc/putc from fgetc/fputc for conformance, two functions should not have the same address. a conforming program could use the addresses of getc and fgetc in ways that assume they are distinct. normally i would just use a wrapper, but these functions are so small and performance-critical that an extra layer of function call could make the one that's a wrapper nearly twice as slow, so I'm just duplicating the code instead. --- src/stdio/getc.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 src/stdio/getc.c (limited to 'src/stdio/getc.c') diff --git a/src/stdio/getc.c b/src/stdio/getc.c new file mode 100644 index 00000000..b3f351d1 --- /dev/null +++ b/src/stdio/getc.c @@ -0,0 +1,13 @@ +#include "stdio_impl.h" + +int getc(FILE *f) +{ + int c; + if (f->lock < 0 || !__lockfile(f)) + return getc_unlocked(f); + c = getc_unlocked(f); + __unlockfile(f); + return c; +} + +weak_alias(getc, _IO_getc); -- cgit v1.2.1