[Bug gold/26585] New: gold: call to deprecated mallinfo raises -Werror=deprecated-declarations with latest glibc

[msc at linux dot ibm.com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26585

            Bug ID: 26585
           Summary: gold: call to deprecated mallinfo raises
                    -Werror=deprecated-declarations with latest glibc
           Product: binutils
           Version: 2.36 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gold
          Assignee: ccoutant at gmail dot com
          Reporter: msc at linux dot ibm.com
                CC: ian at airs dot com
  Target Milestone: ---

glibc recently deprecated mallinfo and introduced mallinfo2 instead:

https://sourceware.org/git/?p=glibc.git;a=commit;h=e3960d1c57e57f33e0e846d615788f4ede73b945

https://sourceware.org/git/?p=glibc.git;a=commit;h=30e5069c7d4b51288d3e6f75f53a6ad2f5e71b0f

Building binutils with latest glibc causes issues while compiling gold:

/home/tcbot/bot-slave/at/src/at14.0-0.redhat-8_ppc64le_ppc64le/sources/binutils/gold/main.cc:
In function ‘int main(int, char**)’:
/home/tcbot/bot-slave/at/src/at14.0-0.redhat-8_ppc64le_ppc64le/sources/binutils/gold/main.cc:294:36:
error: ‘mallinfo mallinfo()’ is deprecated [-Werror=deprecated-declarations]
  294 |       struct mallinfo m = mallinfo();
      |                                    ^
In file included from
/home/tcbot/bot-slave/at/src/at14.0-0.redhat-8_ppc64le_ppc64le/sources/binutils/gold/main.cc:29:
/home/tcbot/bot-slave/at_opt/at14.0/include/malloc.h:118:24: note: declared
here
  118 | extern struct mallinfo mallinfo (void) __THROW __MALLOC_DEPRECATED;
      |                        ^~~~~~~~

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