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# ROCK Linux: rock-src/package/base/glibc/glibc23/pentium23_fix.patch
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--- ./sysdeps/unix/sysv/linux/i386/sysdep.h.orig	2003-01-08 12:38:31.000000000 +0100
+++ ./sysdeps/unix/sysv/linux/i386/sysdep.h	2003-01-08 12:41:09.000000000 +0100
@@ -35,6 +35,12 @@
 
 #ifdef __ASSEMBLER__
 
+/* __i686 is used in assembler code below as normal text within a statement.
+   When optimizing for pentium2 or pentium3, gcc defines __i686 as cpp macro
+   which destroys the code below. Glibc is only using the cpp macro __i686__,
+   so we can savely undefine __i686 here. - Clifford Wolf */
+#undef __i686
+
 /* Linux uses a negative return value to indicate syscall errors,
    unlike most Unices, which use the condition codes' carry flag.