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From: "malitzke at metronets dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/27528] compiling linux kernels 2.6.16.14/15 2.6.17-rc3 on powerpc (7450) get error on long exixting code Date: Thu, 15 Jun 2006 03:26:00 -0000 [thread overview] Message-ID: <20060615030352.20364.qmail@sourceware.org> (raw) In-Reply-To: <bug-27528-11706@http.gcc.gnu.org/bugzilla/> ------- Comment #11 from malitzke at metronets dot com 2006-06-15 03:03 ------- Hans-Peter! Thanks for shedding _some_ light on this murky corner. Perhaps, the "i" constraint is now really inapropriate. First of all, a kernel header appropriately replaces __FUNCTION__ with __func__. Therefore the leftover __FUNCTION__ (probably from non GCC compilers) is not an issue. Second, __LINE__, __FILE__, and __func__ are all known to the compiler, because the compiler definitely knows what __FILE__ it is compiling and just emits the appropriate string. Same argument line pertains to the __LINE__ in the __FILE__ and the name of the __func__ (function) it is trying to compile. The whole idea is akin to an "assert". Therefore it is not up to the linker or assembler. Third, if putting __FILE__ in place of the of either __FUNCTION__ or __func__ it works fine as can be seen in the "-S option" output (e.g. file.s). Fourth, and this might be mine and others misunderstanding, I had thought that "i" really referred to the assembly file address of the string. This address, naturally is an address subject to relocation by the linker. To an _old_ assembly language programmer this appears just like a storm in a waterglass. This particular __asm construct is only used for powerpc (and perhaps ppc) It must be left as a holdover for the original AIX compiler or AIX binutils. In my bugzilla PR to kernel.org I pointed out that knowing the __FILE__ and __LINE__ is really quite sufficient and that perhaps, according to my patch to asm-powerpc/bug.h the particular item could be dropped. See bugzilla.kernel.org PR 6533. They have not taken it up as it only pertains to gcc-4.2.0 (experimental) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27528
next prev parent reply other threads:[~2006-06-15 3:04 UTC|newest] Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top 2006-05-10 2:44 [Bug c/27528] New: " malitzke at metronets dot com 2006-05-10 3:05 ` [Bug c/27528] " malitzke at metronets dot com 2006-05-10 4:04 ` [Bug middle-end/27528] " pinskia at gcc dot gnu dot org 2006-05-10 5:24 ` pinskia at gcc dot gnu dot org 2006-05-10 5:30 ` pinskia at gcc dot gnu dot org 2006-05-10 14:44 ` malitzke at metronets dot com 2006-05-10 14:56 ` dje at gcc dot gnu dot org 2006-05-10 15:06 ` pinskia at gcc dot gnu dot org 2006-05-10 20:17 ` malitzke at metronets dot com 2006-05-10 20:41 ` pinskia at gcc dot gnu dot org 2006-06-14 15:09 ` hp at gcc dot gnu dot org 2006-06-14 15:09 ` hp at gcc dot gnu dot org 2006-06-15 3:26 ` malitzke at metronets dot com [this message] 2006-06-15 17:15 ` hp at gcc dot gnu dot org 2006-06-15 23:03 ` malitzke at metronets dot com 2006-06-15 23:03 ` Andrew Pinski 2006-06-15 23:07 ` pinskia at physics dot uc dot edu 2006-10-27 5:24 ` pinskia at gcc dot gnu dot org 2006-11-03 13:23 ` rsandifo at gcc dot gnu dot org 2006-11-03 13:27 ` hp at gcc dot gnu dot org 2006-11-03 13:30 ` rsandifo at gcc dot gnu dot org 2006-11-09 9:34 ` rsandifo at gcc dot gnu dot org 2006-11-11 9:47 ` rsandifo at gcc dot gnu dot org 2006-11-11 9:53 ` rsandifo at gcc dot gnu dot org 2006-11-11 9:54 ` rsandifo at gcc dot gnu dot org 2006-12-01 1:07 ` chaoyingfu at gcc dot gnu dot org 2007-01-10 19:14 ` [Bug middle-end/27528] [4.2/4.3 Regression] " pinskia at gcc dot gnu dot org
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