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AJvYcCUMKfS5lQM+NK1xmEORcGzEuZidSOx/7A5ewtNmc7pfIgb92XWLnTh6deez76SBgMD3NOGw@lists.linux.dev X-Gm-Message-State: AOJu0YwGrkt88eMCjToxKEi1M8Ntrm4RiSpJIwQLLVGREDDqZ1xUx5qU 0b4KuYoRfn1qZ2ITFepS+RYtJRdhaRLcRYQOCMITu7BXh3rAafcz5tkChgmlS7eXJq2X0mE6awU LBN9dnA== X-Google-Smtp-Source: AGHT+IGTl/0MRt+DgDNAUuYugWnKJZds1hQoM1nSd1eYiKimwIiKclutS+1wetnNSbh/OGTZQZOUhIBYkuPV X-Received: from pjbst3.prod.google.com ([2002:a17:90b:1fc3:b0:301:4260:4d23]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:1f86:b0:2fe:a8b1:7d8 with SMTP id 98e67ed59e1d1-30a33355ff6mr5623948a91.25.1746035475516; Wed, 30 Apr 2025 10:51:15 -0700 (PDT) Date: Wed, 30 Apr 2025 10:49:57 -0700 In-Reply-To: <20250430175036.184610-1-irogers@google.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250430175036.184610-1-irogers@google.com> X-Mailer: git-send-email 2.49.0.906.g1f30a19c02-goog Message-ID: <20250430175036.184610-10-irogers@google.com> Subject: [PATCH v2 09/47] tools subcmd: Silence -Wshorten-64-to-32 warnings From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Adrian Hunter , Kan Liang , Yury Norov , Rasmus Villemoes , Thomas Gleixner , Darren Hart , Davidlohr Bueso , "=?UTF-8?q?Andr=C3=A9=20Almeida?=" , John Garry , Will Deacon , James Clark , Mike Leach , Leo Yan , Yicong Yang , Jonathan Cameron , Nathan Chancellor , Bill Wendling , Justin Stitt , Josh Poimboeuf , Al Viro , Kyle Meyer , Ben Gainey , Athira Rajeev , Kajol Jain , Aditya Gupta , Eder Zulian , Dapeng Mi , Kuan-Wei Chiu , He Zhe , Dirk Gouders , Brian Geffon , Ravi Bangoria , Howard Chu , Charlie Jenkins , Colin Ian King , Dominique Martinet , Jann Horn , Masahiro Yamada , Arnd Bergmann , Yang Jihong , Dmitry Vyukov , Andi Kleen , Graham Woodward , Ilkka Koskinen , Anshuman Khandual , Zhongqiu Han , Hao Ge , Tengda Wu , Gabriele Monaco , Chun-Tse Shao , Casey Chen , "Dr. David Alan Gilbert" , Li Huafei , "Steinar H. Gunderson" , Levi Yun , Weilin Wang , Thomas Falcon , Thomas Richter , Andrew Kreimer , "=?UTF-8?q?Krzysztof=20=C5=81opatowski?=" , Christophe Leroy , Jean-Philippe Romain , Junhao He , "Masami Hiramatsu (Google)" , Xu Yang , Steve Clevenger , Zixian Cai , Stephen Brennan , Yujie Liu , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev Cc: Ian Rogers Content-Type: text/plain; charset="UTF-8" The clang warning -Wshorten-64-to-32 can be useful to catch inadvertent truncation. In some instances this truncation can lead to changing the sign of a result, for example, truncation to return an int to fit a sort routine. Silence the warning by making the implicit truncation explicit. Move mput_char out of header file to its only use in help.c, while changing its argument types. Signed-off-by: Ian Rogers --- tools/lib/subcmd/help.c | 28 ++++++++++++++++------------ tools/lib/subcmd/help.h | 6 ------ tools/lib/subcmd/parse-options.c | 16 ++++++++-------- 3 files changed, 24 insertions(+), 26 deletions(-) diff --git a/tools/lib/subcmd/help.c b/tools/lib/subcmd/help.c index 8561b0f01a24..555b91ada0f9 100644 --- a/tools/lib/subcmd/help.c +++ b/tools/lib/subcmd/help.c @@ -125,13 +125,11 @@ static void get_term_dimensions(struct winsize *ws) ws->ws_col = 80; } -static void pretty_print_string_list(struct cmdnames *cmds, int longest) +static void pretty_print_string_list(struct cmdnames *cmds, size_t longest) { - int cols = 1, rows; - int space = longest + 1; /* min 1 SP between words */ + size_t cols = 1, rows, max_cols; + size_t space = longest + 1; /* min 1 SP between words */ struct winsize win; - int max_cols; - int i, j; get_term_dimensions(&win); max_cols = win.ws_col - 1; /* don't print *on* the edge */ @@ -140,12 +138,12 @@ static void pretty_print_string_list(struct cmdnames *cmds, int longest) cols = max_cols / space; rows = (cmds->cnt + cols - 1) / cols; - for (i = 0; i < rows; i++) { + for (size_t i = 0; i < rows; i++) { printf(" "); - for (j = 0; j < cols; j++) { - unsigned int n = j * rows + i; - unsigned int size = space; + for (size_t j = 0; j < cols; j++) { + size_t n = j * rows + i; + int size = (int)space; if (n >= cmds->cnt) break; @@ -180,7 +178,7 @@ static void list_commands_in_dir(struct cmdnames *cmds, const char *path, const char *prefix) { - int prefix_len; + size_t prefix_len; DIR *dir = opendir(path); struct dirent *de; char *buf = NULL; @@ -194,7 +192,7 @@ static void list_commands_in_dir(struct cmdnames *cmds, astrcatf(&buf, "%s/", path); while ((de = readdir(dir)) != NULL) { - int entlen; + size_t entlen; if (!strstarts(de->d_name, prefix)) continue; @@ -250,10 +248,16 @@ void load_command_list(const char *prefix, exclude_cmds(other_cmds, main_cmds); } +static void mput_char(char c, size_t num) +{ + while (num--) + putchar(c); +} + void list_commands(const char *title, struct cmdnames *main_cmds, struct cmdnames *other_cmds) { - unsigned int i, longest = 0; + size_t i, longest = 0; for (i = 0; i < main_cmds->cnt; i++) if (longest < main_cmds->names[i]->len) diff --git a/tools/lib/subcmd/help.h b/tools/lib/subcmd/help.h index 355c066c8d49..258b3a143cbc 100644 --- a/tools/lib/subcmd/help.h +++ b/tools/lib/subcmd/help.h @@ -14,12 +14,6 @@ struct cmdnames { } **names; }; -static inline void mput_char(char c, unsigned int num) -{ - while(num--) - putchar(c); -} - void load_command_list(const char *prefix, struct cmdnames *main_cmds, struct cmdnames *other_cmds); diff --git a/tools/lib/subcmd/parse-options.c b/tools/lib/subcmd/parse-options.c index 555d617c1f50..add46b81a131 100644 --- a/tools/lib/subcmd/parse-options.c +++ b/tools/lib/subcmd/parse-options.c @@ -201,7 +201,7 @@ static int get_value(struct parse_opt_ctx_t *p, return 0; case OPTION_SET_UINT: - *(unsigned int *)opt->value = unset ? 0 : opt->defval; + *(unsigned int *)opt->value = unset ? 0 : (unsigned int)opt->defval; return 0; case OPTION_SET_PTR: @@ -256,12 +256,12 @@ static int get_value(struct parse_opt_ctx_t *p, return 0; } if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { - *(int *)opt->value = opt->defval; + *(int *)opt->value = (int)opt->defval; return 0; } if (get_arg(p, opt, flags, &arg)) return -1; - *(int *)opt->value = strtol(arg, (char **)&s, 10); + *(int *)opt->value = (int)strtol(arg, (char **)&s, 10); if (*s) return opterror(opt, "expects a numerical value", flags); return 0; @@ -272,14 +272,14 @@ static int get_value(struct parse_opt_ctx_t *p, return 0; } if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { - *(unsigned int *)opt->value = opt->defval; + *(unsigned int *)opt->value = (unsigned int)opt->defval; return 0; } if (get_arg(p, opt, flags, &arg)) return -1; if (arg[0] == '-') return opterror(opt, "expects an unsigned numerical value", flags); - *(unsigned int *)opt->value = strtol(arg, (char **)&s, 10); + *(unsigned int *)opt->value = (unsigned int)strtol(arg, (char **)&s, 10); if (*s) return opterror(opt, "expects a numerical value", flags); return 0; @@ -770,9 +770,9 @@ static void print_option_help(const struct option *opts, int full) break; } - if (pos <= USAGE_OPTS_WIDTH) - pad = USAGE_OPTS_WIDTH - pos; - else { + if (pos <= USAGE_OPTS_WIDTH) { + pad = (int)(USAGE_OPTS_WIDTH - pos); + } else { fputc('\n', stderr); pad = USAGE_OPTS_WIDTH; } -- 2.49.0.906.g1f30a19c02-goog