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Re: [PATCH][gdb/testsuite] Work around tcl bug in libsegfault.exp with check-read1
- From: Tom Tromey <tom at tromey dot com>
- To: Tom de Vries <tdevries at suse dot de>
- Cc: gdb-patches at sourceware dot org, Keith Seitz <keiths at redhat dot com>
- Date: Tue, 30 Jul 2019 08:06:13 -0600
- Subject: Re: [PATCH][gdb/testsuite] Work around tcl bug in libsegfault.exp with check-read1
- References: <20190730132443.GA16765@delia>
>>>>> "Tom" == Tom de Vries <tdevries@suse.de> writes:
Tom> The error occurs when accessing $env(LD_PRELOAD), in a branch where
Tom> "info exists env(LD_PRELOAD)" returns true. AFAIU, this is
Tom> https://core.tcl-lang.org/tcl/tktview?name=67fd4f973a "incorrect results of
Tom> 'info exists' when unset env var in one interp and check for existence from
Tom> another interp".
Nice diagnosis.
Tom> if (read2 == NULL)
Tom> {
Tom> - unsetenv ("LD_PRELOAD");
Tom> + setenv ("LD_PRELOAD", "", 1);
I think it would be good to mention some relevant part of the analysis
in a comment here.
Ok with that change.
Tom