Your message dated Sat, 6 May 2006 12:15:20 +0200
with message-id <[EMAIL PROTECTED]>
and subject line Some uses of pragma GCC visibility with -fPIC still build
position
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--- Begin Message ---
Package: gcc-4.0
Version: 4.0.2-2
Severity: important
Building the following code:
#pragma GCC visibility push(hidden)
#pragma GCC visibility push(default)
#include <string.h>
#pragma GCC visibility pop
__attribute__ ((visibility ("default"))) void Func() {
char c[100];
memset(c, 0, sizeof(c));
}
(yes, this is the same code as in bug #330279)
gives position dependent code:
[EMAIL PROTECTED]:~$ gcc -fPIC -shared -o test.so test.c
[EMAIL PROTECTED]:~$ objdump --private-headers test.so | grep TEXTREL
TEXTREL 0x0
If you removing all pragmas in the source code, and build with
-fvisibility=hidden, you get:
[EMAIL PROTECTED]:~$ gcc -fPIC -shared -fvisibility=hidden -o test.so
test-nopragma.c
[EMAIL PROTECTED]:~$ objdump --private-headers test.so | grep TEXTREL
-- System Information:
Debian Release: testing/unstable
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.12-1-686
Locale: LANG=ja_JP.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8)
Versions of packages gcc-4.0 depends on:
ii binutils 2.16.1cvs20050902-1 The GNU assembler, linker and bina
ii cpp-4.0 4.0.2-2 The GNU C preprocessor
ii gcc-4.0-base 4.0.2-2 The GNU Compiler Collection (base
ii libc6 2.3.5-6 GNU C Library: Shared libraries an
ii libgcc1 1:4.0.2-2 GCC support library
Versions of packages gcc-4.0 recommends:
ii libc6-dev 2.3.5-6 GNU C Library: Development Librari
pn libmudflap0-dev <none> (no description available)
-- no debconf information
--- End Message ---
--- Begin Message ---
Not reproducible anymore with 4.0.3 and 4.1.0 from unstable.
--- End Message ---
