From 219b69d72e878094f3ce03a9e70719709a9b4c43 Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Wed, 9 Dec 2015 08:05:10 +0100 Subject: libc/stdio: Rework custom streams interface similar to glibc. Save 20 bytes per FILE structure, avoid indirect call for read/write/seek/close operations for normal streams. Additionally, custom streams has fileno = -2 now, like in glibc. bloat-o-meter report (UCLIBC_HAS_GLIBC_CUSTOM_STREAMS=y): function old new delta fopencookie 69 131 +62 ftello64 233 260 +27 fseeko64 298 319 +21 fclose 423 442 +19 .rodata 16696 16708 +12 fileno_unlocked 53 45 -8 __ns_name_pack 859 851 -8 vswscanf 184 144 -40 vdprintf 231 187 -44 vsscanf 210 151 -59 vswprintf 269 201 -68 vsnprintf 249 181 -68 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 5/7 up/down: 141/-295) Total: -154 bytes Signed-off-by: Leonid Lisovskiy Signed-off-by: Waldemar Brodkorb --- libc/stdio/fread.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libc/stdio/fread.c') diff --git a/libc/stdio/fread.c b/libc/stdio/fread.c index d2fcc70d5..5df33b468 100644 --- a/libc/stdio/fread.c +++ b/libc/stdio/fread.c @@ -15,7 +15,7 @@ size_t fread_unlocked(void * __restrict ptr, size_t size, size_t nmemb, FILE * __restrict stream) { __STDIO_STREAM_VALIDATE(stream); - assert(stream->__filedes >= -1); + assert(stream->__filedes >= -2); /* Note: If nmbem * size > SIZE_MAX then there is an application * bug since no array can be larger than SIZE_MAX in size. */ -- cgit v1.2.3