From 7c647d615590f8d1c4cca70f547534a9792f45c3 Mon Sep 17 00:00:00 2001 From: Joel Brobecker Date: Fri, 11 Oct 2013 08:23:11 +0000 Subject: [PATCH] warn if "source" fails to open the file when from_tty == 0 Consider the following example: % gdb -q -batch -ex 'source nonexistant-file' [nothing] One would have at least expected the debugger to warn about not finding the file, similar to the error shown when using a more interactive mode. Eg: (gdb) source nonexistant-file nonexistant-file: No such file or directory. Not raising an error appears to be intentional, presumably in order to prevent this situation from stoping the execution of a GDB script. But the lack of at least a warning makes it harder for a user to diagnose any issue, if the file was expected to be there and readable. This patch adds a warning in that case: % gdb -q -batch -ex 'source nonexistant-file' warning: nonexistant-file: No such file or directory. gdb/ChangeLog: * utils.h (perror_warning_with_name): Add declaration. * utils.c (perror_warning_with_name): New function. * cli/cli-cmds.c (source_script_with_search): Add call to perror_warning_with_name if from_tty is nul. gdb/testsuite/ChangeLog: * gdb.base/source-nofile.gdb: New file. * gdb.base/source.exp: Add two tests verifying the behavior when the "source" command is given a non-existant filename. --- gdb/ChangeLog | 7 +++++++ gdb/cli/cli-cmds.c | 7 +++++-- gdb/testsuite/ChangeLog | 6 ++++++ gdb/testsuite/gdb.base/source-nofile.gdb | 22 ++++++++++++++++++++++ gdb/testsuite/gdb.base/source.exp | 9 +++++++++ gdb/utils.c | 13 +++++++++++++ gdb/utils.h | 2 ++ 7 files changed, 64 insertions(+), 2 deletions(-) create mode 100644 gdb/testsuite/gdb.base/source-nofile.gdb diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 37ad575454c..b73fd40f3fa 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,10 @@ +2013-11-11 Joel Brobecker + + * utils.h (perror_warning_with_name): Add declaration. + * utils.c (perror_warning_with_name): New function. + * cli/cli-cmds.c (source_script_with_search): Add call to + perror_warning_with_name if from_tty is nul. + 2013-11-11 Joel Brobecker * utils.c (perror_string): New function, extracted out of diff --git a/gdb/cli/cli-cmds.c b/gdb/cli/cli-cmds.c index 460b7190b17..0ef325d5fc1 100644 --- a/gdb/cli/cli-cmds.c +++ b/gdb/cli/cli-cmds.c @@ -571,11 +571,14 @@ source_script_with_search (const char *file, int from_tty, int search_path) /* The script wasn't found, or was otherwise inaccessible. If the source command was invoked interactively, throw an error. Otherwise (e.g. if it was invoked by a script), - silently ignore the error. */ + just emit a warning, rather than cause an error. */ if (from_tty) perror_with_name (file); else - return; + { + perror_warning_with_name (file); + return; + } } old_cleanups = make_cleanup (xfree, full_path); diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index c2a15930656..9f45e839bac 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2013-10-11 Joel Brobecker + + * gdb.base/source-nofile.gdb: New file. + * gdb.base/source.exp: Add two tests verifying the behavior when + the "source" command is given a non-existant filename. + 2013-10-11 Yao Qi * gdb.mi/mi-catch-load.c: Remove the include of "dlfcn.h". diff --git a/gdb/testsuite/gdb.base/source-nofile.gdb b/gdb/testsuite/gdb.base/source-nofile.gdb new file mode 100644 index 00000000000..e577a41cfdf --- /dev/null +++ b/gdb/testsuite/gdb.base/source-nofile.gdb @@ -0,0 +1,22 @@ +# This testcase is part of GDB, the GNU debugger. +# +# Copyright 2013 Free Software Foundation, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +source for-sure-nonexistant-file + +# Just print an message to confirm that failing to source the file +# did not cause this script to abort. +echo source error not fatal\n diff --git a/gdb/testsuite/gdb.base/source.exp b/gdb/testsuite/gdb.base/source.exp index 61fd2211c46..62a6599c268 100644 --- a/gdb/testsuite/gdb.base/source.exp +++ b/gdb/testsuite/gdb.base/source.exp @@ -57,4 +57,13 @@ gdb_test "source -v -s ./source-test.gdb" \ "echo test source options.*" \ "source -v -s" +# Test sourcing a non-existant file, both when the source command +# comes from the a command entered at the GDB prompt, and when +# it comes from a script being sourced. +gdb_test "source for-sure-nonexistant-file" \ + "for-sure-nonexistant-file: No such file or directory\." + +gdb_test "source source-nofile.gdb" \ + "warning: for-sure-nonexistant-file: No such file or directory\.\[\r\n\]*source error not fatal" + gdb_exit diff --git a/gdb/utils.c b/gdb/utils.c index 402fe8ee240..89c248cc46d 100644 --- a/gdb/utils.c +++ b/gdb/utils.c @@ -1006,6 +1006,19 @@ perror_with_name (const char *string) throw_perror_with_name (GENERIC_ERROR, string); } +/* Same as perror_with_name except that it prints a warning instead + of throwing an error. */ + +void +perror_warning_with_name (const char *string) +{ + char *combined; + + combined = perror_string (string); + warning (_("%s"), combined); + xfree (combined); +} + /* Print the system error message for ERRCODE, and also mention STRING as the file name for which the error was encountered. */ diff --git a/gdb/utils.h b/gdb/utils.h index 3492f09cf47..7ea0ff4205d 100644 --- a/gdb/utils.h +++ b/gdb/utils.h @@ -285,6 +285,8 @@ extern void throw_perror_with_name (enum errors errcode, const char *string) ATTRIBUTE_NORETURN; extern void perror_with_name (const char *) ATTRIBUTE_NORETURN; +extern void perror_warning_with_name (const char *string); + extern void print_sys_errmsg (const char *, int); /* Warnings and error messages. */ -- 2.34.1