• using R Under development (unstable) (2023-01-30 r83727)
• using platform: x86_64-pc-linux-gnu (64-bit)
• R was compiled by
      gcc-12 (Debian 12.2.0-14) 12.2.0
      GNU Fortran (Debian 12.2.0-14) 12.2.0
• running under: Debian GNU/Linux bookworm/sid
• using session charset: UTF-8
• checking for file ‘igraph/DESCRIPTION’ ... OK
• this is package ‘igraph’ version ‘1.3.5’
• package encoding: UTF-8
• checking package namespace information ... OK
• checking package dependencies ... OK
• checking if this is a source package ... OK
• checking if there is a namespace ... OK
• checking for executable files ... OK
• checking for hidden files and directories ... OK
• checking for portable file names ... OK
• checking for sufficient/correct file permissions ... OK
• checking serialization versions ... OK
• checking whether package ‘igraph’ can be installed ... WARNING
  Found the following significant warnings:
    core/core/error.c:65:29: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    vendor/plfit/gss.h:132:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    vendor/plfit/gss.c:60:20: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    vendor/plfit/mt.c:20:17: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    vendor/plfit/platform.c:36:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    rrandom.h:26:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    init.c:51:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    init.c:104:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    rinterface.c:2506:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    rinterface.c:2522:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    rinterface.c:9433:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
    rrandom.c:108:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  See https://www.r-project.org/nosvn/R.check/r-devel-linux-x86_64-debian-gcc/igraph-00install.html for details.
• used C compiler: ‘gcc-12 (Debian 12.2.0-14) 12.2.0’
• used C++ compiler: ‘g++-12 (Debian 12.2.0-14) 12.2.0’
• checking C++ specification ... NOTE
    Specified C++11: please update to current default of C++17
• checking package directory ... OK
• checking for future file timestamps ... OK
• checking DESCRIPTION meta-information ... OK
• checking top-level files ... OK
• checking for left-over files ... OK
• checking index information ... OK
• checking package subdirectories ... OK
• checking R files for non-ASCII characters ... OK
• checking R files for syntax errors ... OK
• checking whether the package can be loaded ... [1s/1s] OK
• checking whether the package can be loaded with stated dependencies ... [1s/1s] OK
• checking whether the package can be unloaded cleanly ... [1s/1s] OK
• checking whether the namespace can be loaded with stated dependencies ... [0s/1s] OK
• checking whether the namespace can be unloaded cleanly ... [1s/1s] OK
• checking loading without being on the library search path ... [0s/1s] OK
• checking use of S3 registration ... OK
• checking dependencies in R code ... OK
• checking S3 generic/method consistency ... OK
• checking replacement functions ... OK
• checking foreign function calls ... OK
• checking R code for possible problems ... [79s/123s] OK
• checking Rd files ... [4s/6s] OK
• checking Rd metadata ... OK
• checking Rd line widths ... OK
• checking Rd cross-references ... OK
• checking for missing documentation entries ... OK
• checking for code/documentation mismatches ... OK
• checking Rd \usage sections ... OK
• checking Rd contents ... OK
• checking for unstated dependencies in examples ... OK
• checking line endings in shell scripts ... OK
• checking line endings in C/C++/Fortran sources/headers ... OK
• checking line endings in Makefiles ... OK
• checking compilation flags in Makevars ... OK
• checking for GNU extensions in Makefiles ... OK
• checking for portable use of $(BLAS_LIBS) and $(LAPACK_LIBS) ... OK
• checking use of PKG_*FLAGS in Makefiles ... OK
• checking use of SHLIB_OPENMP_*FLAGS in Makefiles ... OK
• checking pragmas in C/C++ headers and code ... OK
• checking compilation flags used ... OK
• checking compiled code ... WARNING
  File ‘igraph/libs/igraph.so’:
    Found ‘__sprintf_chk’, possibly from ‘sprintf’ (C)
      Objects: ‘core/community/spinglass/NetRoutines.o’,
        ‘core/internal/glpk_support.o’, ‘vendor/uuid/unparse.o’
  
  Compiled code should not call entry points which might terminate R nor
  write to stdout/stderr instead of to the console, nor use Fortran I/O
  nor system RNGs nor [v]sprintf.
  
  See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
• checking examples ... [12s/20s] OK
• checking for unstated dependencies in ‘tests’ ... OK
• checking tests ... [61s/102s] OK
    Running ‘testthat.R’ [61s/102s]
• checking PDF version of manual ... [31s/57s] OK
• checking HTML version of manual ... [19s/47s] OK
• checking for non-standard things in the check directory ... OK
• DONE

Status: 2 WARNINGs, 1 NOTE