On 9/6/2020 3:47 PM, Ken Brown via Cygwin wrote:
On 9/6/2020 2:43 PM, David Dyck via Cygwin wrote:
This command triggers an assertion failure
"ag" is from the_silver_searcher
$ ag 2 <(echo 2)
assertion "p >= path" failed: file
"/home/corinna/src/cygwin/cygwin-3.1.7/cygwin-3.1.7-1.x86_64/src/newlib-cygwin/winsup/cygwin/path.cc",
line 3065, function: int symlink_info::check(char*, const
suffix_info*, fs_info&, path_conv_handle&)
Aborted (core dumped)
3473k 2020/08/22 C:\cygwin64\bin\cygwin1.dll
Cygwin DLL version info:
DLL version: 3.1.7
bash 4.4.12-3 OK
the_silver_searcher 2.2.0-1 OK
[...]
assertion "p >= path" failed: file
"/home/corinna/src/cygwin/cygwin-3.1.7/cygwin-3.1.7-1.x86_64/src/newlib-cygwin/winsup/cygwin/path.cc",
line 3065, function: int symlink_info::check(char*, const
suffix_info*, fs_info&, path_conv_handle&)
Aborted (core dumped)
[...]
I've reported this on github as an "ag" bug, but I think it is a bug in cygwin
An assertion failure in Cygwin code is a Cygwin bug. I'll take a look.
Running
bash -c '/usr/bin/ag 2 <(echo 2)'
under strace yields the following:
242 191767 [main] ag 33659 open: open(/dev/fd/63/.ignore, 0x0)
[...]
30 192584 [main] ag 33659 mount_info::conv_to_win32_path: src_path
/proc/self/fd/63/.ignore, dst /proc/self/fd/63/.ignore, flags 0x0, rc 0
[...]
31 193366 [main] ag 33659 mount_info::conv_to_win32_path:
conv_to_win32_path (pipe:[4295036184]/.ignore)
[...]
31 193550 [main] ag 33659 mount_info::conv_to_win32_path:
conv_to_win32_path (pipe:[4295036184])
[...]
34 193615 [main] ag 33659 symlink_info::check: 0xC0000034 = NtCreateFile
(\??\C:pipe:[4295036184])
The assertion fails because the path 'C:pipe:[4295036184]' doesn't contain a
backslash. But probably we should never have allowed ourselves to get to the
point of considering that path.
I don't have any more time to think about this today, but I'll get back to it
tomorrow if no one beats me to it.
Ken
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