main.c:276:31: error: passing argument 1 of 'fputc' makes integer from pointer without a cast

:::::: 
:::::: Manual check reason: "low confidence bisect report"
:::::: 

BCC: [email protected]
CC: [email protected]
TO: Markus Elfring <[email protected]>
CC: 0day robot <[email protected]>

Hi Markus,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://github.com/intel-lab-lkp/linux/commits/Markus-Elfring/tools-Use-fputc-calls-in-some-functions/20260806-165154
head:   e56bf8a92708e92480f6dc2a8fcf773661b9e616
commit: e56bf8a92708e92480f6dc2a8fcf773661b9e616 tools: Use fputc() calls in some functions
date:   2 hours ago
:::::: branch date: 2 hours ago
:::::: commit date: 2 hours ago
config: arm64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260806/[email protected]/config)
compiler: aarch64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260806/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

All errors (new ones prefixed by >>):

   Makefile.config:564: No elfutils/debuginfod.h found, no debuginfo server support, please install libdebuginfod-dev/elfutils-debuginfod-client-devel or equivalent
   Makefile.config:938: No libllvm 13+ found, slower source file resolution, please install llvm-devel/llvm-dev
   Makefile.config:1044: No babeltrace2 found, disables 'perf data' CTF format support, please install libbabeltrace2-dev[el]
   Makefile.config:1134: Rust is not found. Test workloads with rust are disabled.
     PERF_VERSION = 7.2.rc4.ge56bf8a92708
   cc1: warning: '-Wformat-y2k' ignored without '-Wformat' [-Wformat-y2k]
   cc1: warning: '-Wformat-security' ignored without '-Wformat' [-Wformat-security]
   main.c: In function 'fprint_hex':
>> main.c:276:31: error: passing argument 1 of 'fputc' makes integer from pointer without a cast [-Wint-conversion]
     276 |                         fputc(f, '\n');
         |                               ^
         |                               |
         |                               FILE *
   In file included from main.c:8:
   /usr/include/stdio.h:611:23: note: expected 'int' but argument is of type 'FILE *'
     611 | extern int fputc (int __c, FILE *__stream) __nonnull ((2));
         |                   ~~~~^~~
>> main.c:276:34: error: passing argument 2 of 'fputc' makes pointer from integer without a cast [-Wint-conversion]
     276 |                         fputc(f, '\n');
         |                                  ^~~~
         |                                  |
         |                                  int
   /usr/include/stdio.h:611:34: note: expected 'FILE *' but argument is of type 'int'
     611 | extern int fputc (int __c, FILE *__stream) __nonnull ((2));
         |                            ~~~~~~^~~~~~~~
   make[4]: *** [Makefile:294: tools/perf/util/bpf_skel/.tmp/bootstrap/main.o] Error 1
   make[4]: *** Waiting for unfinished jobs....
   common.c: In function 'p_err':
>> common.c:56:23: error: passing argument 1 of 'fputc' makes integer from pointer without a cast [-Wint-conversion]
      56 |                 fputc(stderr, '\n');
         |                       ^~~~~~
         |                       |
         |                       FILE *
   In file included from common.c:15:
   /usr/include/stdio.h:611:23: note: expected 'int' but argument is of type 'FILE *'
     611 | extern int fputc (int __c, FILE *__stream) __nonnull ((2));
         |                   ~~~~^~~
>> common.c:56:31: error: passing argument 2 of 'fputc' makes pointer from integer without a cast [-Wint-conversion]
      56 |                 fputc(stderr, '\n');
         |                               ^~~~
         |                               |
         |                               int
   /usr/include/stdio.h:611:34: note: expected 'FILE *' but argument is of type 'int'
     611 | extern int fputc (int __c, FILE *__stream) __nonnull ((2));
         |                            ~~~~~~^~~~~~~~
   common.c: In function 'p_info':
   common.c:70:15: error: passing argument 1 of 'fputc' makes integer from pointer without a cast [-Wint-conversion]
      70 |         fputc(stderr, '\n');
         |               ^~~~~~
         |               |
         |               FILE *
   /usr/include/stdio.h:611:23: note: expected 'int' but argument is of type 'FILE *'
     611 | extern int fputc (int __c, FILE *__stream) __nonnull ((2));
         |                   ~~~~^~~
   common.c:70:23: error: passing argument 2 of 'fputc' makes pointer from integer without a cast [-Wint-conversion]
      70 |         fputc(stderr, '\n');
         |                       ^~~~
         |                       |
         |                       int
   /usr/include/stdio.h:611:34: note: expected 'FILE *' but argument is of type 'int'
     611 | extern int fputc (int __c, FILE *__stream) __nonnull ((2));
         |                            ~~~~~~^~~~~~~~
   make[4]: *** [Makefile:294: tools/perf/util/bpf_skel/.tmp/bootstrap/common.o] Error 1
   make[3]: *** [bpf_skel.mak:44: tools/perf/util/bpf_skel/.tmp/bootstrap/bpftool] Error 2
   make[2]: *** [Makefile.perf:622: bpf-skel-prepare] Error 2
   make[1]: *** [Makefile.perf:281: sub-make] Error 2

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