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From: eric_dana@bmc.com To: gcc-gnats@gcc.gnu.org Cc: dick_schoeller@bmc.com Subject: preprocessor/5806: The preprocessor evaluates expression s in 64-bit, violating IS C++ 16.1.4 Date: Fri, 01 Mar 2002 12:16:00 -0000 [thread overview] Message-ID: <20020301201205.24986.qmail@sources.redhat.com> (raw) >Number: 5806 >Category: preprocessor >Synopsis: The preprocessor evaluates expression s in 64-bit, violating IS C++ 16.1.4 >Confidential: no >Severity: serious >Priority: high >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Fri Mar 01 12:16:00 PST 2002 >Closed-Date: >Last-Modified: >Originator: Eric Dana >Release: GCC 3.0.4 and possibly GCC 3.1 >Organization: >Environment: AIX, Solaris, Sequent and others >Description: The preprocessor evaluates expressions using 64-bits, violating ISO C++ 16.1.4 and 5.19. The problems is generic and can be easily reproduced. This causes the 32/64 bit test on Sequent provided header files to be incorrectly parsed. The vendor compilers work according to the standard. >How-To-Repeat: On Solaris (64-bit): cc ed.c a.out cc -xarch=v9 ed.c (64-bit build) a.out gcc ed.c a.out On all OS's: cc ed.c a.out gcc ed.c a.out >Fix: >Release-Note: >Audit-Trail: >Unformatted: ----gnatsweb-attachment---- Content-Type: text/plain; name="ed.c" Content-Disposition: inline; filename="ed.c" #if 0 #if ((~0UL) == (0xffffffffUL)) #define MYSIZESTRING "32 bit" #else #define MYSIZESTRING "64 bit" #endif #endif #define MYSIZESTRING "foo" #include <stdio.h> main () { printf("sizeof long = %d\n", sizeof(long)); printf("C preprocessor thinks the size is: %s\n", MYSIZESTRING); }
next reply other threads:[~2002-03-01 20:16 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-03-01 12:16 eric_dana [this message] 2002-03-01 13:36 Zack Weinberg 2002-03-01 15:16 Neil Booth 2002-03-14 11:46 Zack Weinberg 2002-03-14 13:06 Dana, Eric 2002-03-14 13:06 'Neil Booth' 2002-03-14 15:16 'Zack Weinberg' 2002-03-15 8:56 Dana, Eric 2002-03-25 0:53 neil 2002-05-26 12:16 neil 2002-05-27 13:35 neil 2002-08-03 0:56 'Zack Weinberg' 2002-08-05 15:26 Dana, Eric
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