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[71.211.130.244]) by smtp.gmail.com with ESMTPSA id y3-20020a92d0c3000000b0033c01c407fbsm288853ila.31.2023.05.31.07.39.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 May 2023 07:39:42 -0700 (PDT) From: Tom Tromey To: gdb-patches@sourceware.org Cc: Tom Tromey Subject: [PATCH] Improve MI -dprintf-insert documentation Date: Wed, 31 May 2023 08:39:32 -0600 Message-Id: <20230531143932.3487356-1-tromey@adacore.com> X-Mailer: git-send-email 2.40.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-11.8 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,GIT_PATCH_0,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: I found the documentation for -dprintf-insert a bit unclear. It didn't mention the possibility of multiple arguments, and I also noticed that it implied that the format parameter is optional, which it is not. While looking into this I also noticed a few comments in the implementation that could also be improved. Then, I noticed a repeated call to strlen in a loop condition, so I fixed this up as well. --- gdb/doc/gdb.texinfo | 9 +++++++-- gdb/mi/mi-cmd-break.c | 10 +++++----- 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index a179af77224..fc55c4e7b43 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -32328,10 +32328,15 @@ times="0"@}]@} @smallexample -dprintf-insert [ -t ] [ -f ] [ -d ] [ --qualified ] [ -c @var{condition} ] [--force-condition] [ -i @var{ignore-count} ] - [ -p @var{thread-id} ] [ @var{locspec} ] [ @var{format} ] - [ @var{argument} ] + [ -p @var{thread-id} ] [ @var{locspec} ] @var{format} + [ @var{argument}@dots{} ] @end smallexample +@noindent +Insert a new dynamic print breakpoint at the given location. +@xref{Dynamic Printf}. @var{format} is the format to use, and any +remaining arguments are passed as expressions to substitute. + @noindent If supplied, @var{locspec} and @code{--qualified} may be specified the same way as for the @code{-break-insert} command. diff --git a/gdb/mi/mi-cmd-break.c b/gdb/mi/mi-cmd-break.c index 082c4da58a3..0777fcbd35e 100644 --- a/gdb/mi/mi-cmd-break.c +++ b/gdb/mi/mi-cmd-break.c @@ -93,8 +93,8 @@ setup_breakpoint_reporting (void) } -/* Convert arguments in ARGV to the string in "format",argv,argv... - and return it. */ +/* Convert arguments in ARGV to a string suitable for parsing by + dprintf like "FORMAT",ARG,ARG... and return it. */ static std::string mi_argv_to_format (const char *const *argv, int argc) @@ -102,9 +102,9 @@ mi_argv_to_format (const char *const *argv, int argc) int i; std::string result; - /* Convert ARGV[OIND + 1] to format string and save to FORMAT. */ + /* Convert ARGV[0] to format string and save to FORMAT. */ result += '\"'; - for (i = 0; i < strlen (argv[0]); i++) + for (i = 0; argv[0][i] != '\0'; i++) { switch (argv[0][i]) { @@ -151,7 +151,7 @@ mi_argv_to_format (const char *const *argv, int argc) } result += '\"'; - /* Apply other argv to FORMAT. */ + /* Append other arguments. */ for (i = 1; i < argc; i++) { result += ','; -- 2.40.0