gdb/gdb-rhbz1916516-pathstuffs132-internal-error.patch
Bruno Larsen 4cf9f20b12 Backport [gdb/cli] Don't assert on empty string for core-file
(Tom de Vries)

Resolves: RHBZ 1916516
2021-09-23 15:24:45 -03:00

68 lines
2.1 KiB
Diff

From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Bruno Larsen <blarsen@redhat.com>
Date: Wed, 22 Sep 2021 12:22:44 -0300
Subject: gdb-rhbz1916516-pathstuffs132-internal-error.patch
;;[gdb/cli] Don't assert on empty string for core-file
;;(Tom de Vries)
With current gdb we run into:
...
$ gdb -batch '' ''
: No such file or directory.
pathstuff.cc:132: internal-error: \
gdb::unique_xmalloc_ptr<char> gdb_abspath(const char*): \
Assertion `path != NULL && path[0] != '\0'' failed.
...
Fix this by skipping the call to gdb_abspath in core_target_open in the
empty-string case, such that we have instead:
...
$ gdb -batch '' ''
: No such file or directory.
: No such file or directory.
$
...
Tested on x86_64-linux.
gdb/ChangeLog:
2021-08-30 Tom de Vries <tdevries@suse.de>
PR cli/28290
* gdb/corelow.c (core_target_open): Skip call to gdb_abspath in the
empty-string case.
gdb/testsuite/ChangeLog:
2021-08-30 Tom de Vries <tdevries@suse.de>
PR cli/28290
* gdb.base/batch-exit-status.exp: Add gdb '' and gdb '' '' tests.
diff --git a/gdb/corelow.c b/gdb/corelow.c
--- a/gdb/corelow.c
+++ b/gdb/corelow.c
@@ -446,7 +446,8 @@ core_target_open (const char *arg, int from_tty)
}
gdb::unique_xmalloc_ptr<char> filename (tilde_expand (arg));
- if (!IS_ABSOLUTE_PATH (filename.get ()))
+ if (strlen (filename.get ()) != 0
+ && !IS_ABSOLUTE_PATH (filename.get ()))
filename = gdb_abspath (filename.get ());
flags = O_BINARY | O_LARGEFILE;
diff --git a/gdb/testsuite/gdb.base/batch-exit-status.exp b/gdb/testsuite/gdb.base/batch-exit-status.exp
--- a/gdb/testsuite/gdb.base/batch-exit-status.exp
+++ b/gdb/testsuite/gdb.base/batch-exit-status.exp
@@ -76,3 +76,7 @@ test_exit_status 1 "-batch -x $good_commands -x $bad_commands" \
"-batch -x good-commands -x bad-commands"
test_exit_status 1 "-batch -x $good_commands -ex \"set not-a-thing 4\"" \
"-batch -x good-commands -ex \"set not-a-thing 4\""
+
+set no_such_re ": No such file or directory\\."
+test_exit_status 1 "-batch \"\"" $no_such_re
+test_exit_status 1 "-batch \"\" \"\"" [multi_line $no_such_re $no_such_re]