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From: Lee <ler762 AT gmail DOT com>
Date: Tue, 27 Mar 2018 13:39:18 -0400
Message-ID: <CAD8GWssb0Ka-GmULAtb=dLnNFt=ssbT-Cc1viNTWMC7_E=bfzw@mail.gmail.com>
Subject: gcc -fsanitize => cannot find -lubsan
To: cygwin AT cygwin DOT com
Content-Type: text/plain; charset="UTF-8"
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How do you figure out which package is missing from your install?

$cat sbstrict.c
int main () {
  return 0;
}

$i686-w64-mingw32-gcc -fsanitize=bounds-strict sbstrict.c
/usr/lib/gcc/i686-w64-mingw32/6.4.0/../../../../i686-w64-mingw32/bin/ld:
cannot find -lubsan
collect2: error: ld returned 1 exit status

$gcc -fsanitize=bounds-strict sbstrict.c
/usr/lib/gcc/x86_64-pc-cygwin/6.4.0/../../../../x86_64-pc-cygwin/bin/ld:
cannot find -lubsan
collect2: error: ld returned 1 exit status


I looked at
  https://cygwin.com/cgi-bin2/package-grep.cgi?grep=ubsan&arch=x86_64
and both
  gcc-debuginfo-6.4.0-5
  mingw64-i686-gcc-debuginfo-6.4.0-1
have a ubsan.c, but ld wouldn't be looking for that.  Right??


Thanks
Lee

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