patches/uClibc/0.9.29/120-fix-internal_function-definition.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Mon Feb 21 23:39:46 2011 +0100 (2011-02-21)
changeset 2312 8b9938edd3d8
parent 281 7039139a912a
permissions -rw-r--r--
libc/glibc: add fortify option

By default, recent versions of glibc and eglibc will build some
functions that take format strings (eg. printf, syslog...) with
run-time checks against some format string attacks. This is
called a fortified build.

Unfortunately, this fails somehow while building the instrumented
version of syslog, with some kind of circular dependency...

Disable fortified builds by default, and hide the enabling option
behind EXPERIMENTAL for daring users...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     1 Index: uClibc/libc/sysdeps/linux/i386/bits/uClibc_arch_features.h
     2 ===================================================================
     3 --- uClibc/libc/sysdeps/linux/i386/bits/uClibc_arch_features.h	(revision 18898)
     4 +++ uClibc/libc/sysdeps/linux/i386/bits/uClibc_arch_features.h	(working copy)
     5 @@ -42,6 +42,8 @@
     6  /* define if target supports IEEE signed zero floats */
     7  #define __UCLIBC_HAVE_SIGNED_ZERO__
     8  
     9 +#if defined _LIBC
    10  #define internal_function __attribute__ ((regparm (3), stdcall))
    11 +#endif
    12  
    13  #endif /* _BITS_UCLIBC_ARCH_FEATURES_H */
    14 Index: uClibc/include/libc-symbols.h
    15 ===================================================================
    16 --- uClibc/include/libc-symbols.h	(revision 18898)
    17 +++ uClibc/include/libc-symbols.h	(working copy)
    18 @@ -22,6 +22,16 @@
    19  #ifndef _LIBC_SYMBOLS_H
    20  #define _LIBC_SYMBOLS_H	1
    21  
    22 +/* This is defined for the compilation of all C library code.  features.h
    23 +   tests this to avoid inclusion of stubs.h while compiling the library,
    24 +   before stubs.h has been generated.  Some library code that is shared
    25 +   with other packages also tests this symbol to see if it is being
    26 +   compiled as part of the C library.  We must define this before including
    27 +   config.h, because it makes some definitions conditional on whether libc
    28 +   itself is being compiled, or just some generator program.  */
    29 +#define _LIBC	1
    30 +
    31 +
    32  /* This file's macros are included implicitly in the compilation of every
    33     file in the C library by -imacros.
    34  
    35 @@ -40,16 +50,6 @@
    36  
    37  #include <bits/uClibc_arch_features.h>
    38  
    39 -
    40 -/* This is defined for the compilation of all C library code.  features.h
    41 -   tests this to avoid inclusion of stubs.h while compiling the library,
    42 -   before stubs.h has been generated.  Some library code that is shared
    43 -   with other packages also tests this symbol to see if it is being
    44 -   compiled as part of the C library.  We must define this before including
    45 -   config.h, because it makes some definitions conditional on whether libc
    46 -   itself is being compiled, or just some generator program.  */
    47 -#define _LIBC	1
    48 -
    49  /* Enable declarations of GNU extensions, since we are compiling them.  */
    50  #define _GNU_SOURCE	1
    51