gdb/SOURCES/gdb-bz568248-oom-is-error.patch
2021-10-08 11:12:49 +00:00

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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Fedora GDB patches <invalid@email.com>
Date: Fri, 27 Oct 2017 21:07:50 +0200
Subject: gdb-bz568248-oom-is-error.patch
;; Out of memory is just an error, not fatal (uninitialized VLS vars, BZ 568248).
;;=push+jan: Inferior objects should be read in parts, then this patch gets obsoleted.
http://sourceware.org/ml/gdb-patches/2010-06/msg00005.html
Hi,
unfortunately I see this problem reproducible only with the
archer-jankratochvil-vla branch (VLA = Variable Length Arrays - char[var]).
OTOH this branch I hopefully submit in some form for FSF GDB later.
In this case (a general problem but tested for example on Fedora 13 i686):
int
main (int argc, char **argv)
{
char a[argc];
return a[0];
}
(gdb) start
(gdb) print a
../../gdb/utils.c:1251: internal-error: virtual memory exhausted: can't allocate 4294951689 bytes.
It is apparently because boundary for the variable `a' is not initialized
there. Users notice it due to Eclipse-CDT trying to automatically display all
the local variables on each step.
Apparentl no regressions on {x86_64,x86_64-m32,i686}-fedora13-linux-gnu.
But is anone aware of the reasons to use internal_error there?
I find simple error as a perfectly reasonable there.
(history only tracks it since the initial import)
IIRC this idea has been discussed with Tom Tromey, not sure of its origin.
I understand it may be offtopic for FSF GDB but from some GDB crashes I am not
sure if it can happen only due to the VLA variables.
Thanks,
Jan
gdb/
2010-06-01 Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* utils.c (nomem): Change internal_error to error.
diff --git a/gdb/utils.c b/gdb/utils.c
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -746,13 +746,11 @@ malloc_failure (long size)
{
if (size > 0)
{
- internal_error (__FILE__, __LINE__,
- _("virtual memory exhausted: can't allocate %ld bytes."),
- size);
+ error (_("virtual memory exhausted: can't allocate %ld bytes."), size);
}
else
{
- internal_error (__FILE__, __LINE__, _("virtual memory exhausted."));
+ error (_("virtual memory exhausted."));
}
}