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Date: | Tue, 29 Dec 2015 17:43:41 +0100 |
From: | Houder <houder AT xs4all DOT nl> |
To: | cygwin AT cygwin DOT com |
Subject: | Re: cmp (or echo) bug? |
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On 2015-12-25 22:32, David Balažic wrote: > Hi! > > In Cygwin terminal (bash) I typed: > > cmp <(echo echo1) <(echo echo2) > > This does not print anything. > Not even with -b. > > On Linux (Ubuntu 12.04 in VMWare) it reports that the inputs are > different. > > Bug? > Or am I missing something? @@ uname -a CYGWIN_NT-6.1-WOW Seven 2.3.1(0.291/5/3) 2015-11-14 12:42 i686 Cygwin @@ ./cmp <(echo echo1) <(echo echo2) /dev/fd/63 /dev/fd/62 differ: byte 5, line 1 @@ ./cmp <(echo echo1) <(echo echo2) /dev/fd/63 /dev/fd/62 differ: byte 5, line 1 @@ ./cmp <(echo echo1) <(echo echo2) /dev/fd/63 /dev/fd/62 differ: byte 5, line 1 @@ ./cmp <(echo echo1) <(echo echo2) /dev/fd/63 /dev/fd/62 differ: byte 5, line 1 @@ ./cmp <(echo echo1) <(echo echo2) /dev/fd/63 /dev/fd/62 differ: byte 5, line 1 @@ ./cmp <(echo echo1) <(echo echo2) /dev/fd/63 /dev/fd/62 differ: byte 5, line 1 etc. But only after I had modified cmp.c (diffutils) as follows: int main (int argc, char **argv) { ... #if 0 if (file_desc[f1] < 0 || fstat (file_desc[f1], stat_buf + f1) != 0) #else if (file_desc[f1] < 0 || f1 ? ( stat (file[1], stat_buf + f1) != 0 ) : ( stat (file[0], stat_buf + f1) != 0 ) ) // Henri: suspect fstat #endif { if (file_desc[f1] < 0 && comparison_type == type_status) exit (EXIT_TROUBLE); else error (EXIT_TROUBLE, errno, "%s", file[f1]); } } /* If the files are links to the same inode and have the same file position, they are identical. */ if (0 < same_file (&stat_buf[0], &stat_buf[1]) && same_file_attributes (&stat_buf[0], &stat_buf[1]) && file_position (0) == file_position (1)) { // Henri: diagnostics #if 0 printf("same_file = %d\n", same_file (&stat_buf[0], &stat_buf[1]) ); printf("same_file_attributes = %d\n", same_file_attributes (&stat_buf[0], &stat_buf[1]) ); printf("same file pos = %d\n", file_position (0) == file_position (1) ); #endif printf("file[0] = %s, file[1] = %s\n", file[0], file[1]); printf("file_desc[0] = %d, file_desc[1] = %d\n", file_desc[0], file_desc[1]); printf("bailing out: same file.\n"); return EXIT_SUCCESS; } Regards, Henri -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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