02bce71cab
`mtrace(1)` is a small Perl script that interprets and provides
human-readable output for `malloc(3)` traces.
Even though this is actually part of `glibc` itself I decided to place
this into its own package. The main reason for this is that this script
has a runtime dependency on Perl which would complicate `stdenv`
bootstrapping since we'd have to compile another Perl that doesn't depend on
the bootstrap tools that is used as runtime dependency for the
stage2 glibc.
Since this is only a dev/debugging tool, splitting this up seemed like a
reasonable choice to me.
On a leaking C program, this can be used like this:
$ env MALLOC_TRACE=$(pwd)/trace ./a.out
$ ./result/bin/mtrace ./trace
Memory not freed:
-----------------
Address Size Caller
0x0000000001875690 0x4 at 0x401151
Closes #141924
38 lines
1.2 KiB
Nix
38 lines
1.2 KiB
Nix
{ glibc, perl }:
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# Small wrapper which only exposes `mtrace(3)` from `glibc`. This can't be placed
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# into `glibc` itself because it depends on Perl which would mean that the final
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# `glibc` inside a stdenv bootstrap has a dependency `glibc -> perl -> bootstrap tools`,
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# so this is now in its own package that isn't used for bootstrapping.
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#
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# `glibc` needs to be overridden here because it's still needed to `./configure` the source in order
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# to have a build environment where we can call the needed make target.
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glibc.overrideAttrs ({ meta ? {}, ... }: {
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pname = "glibc-mtrace";
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buildPhase = ''
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runHook preBuild
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mkdir malloc
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make -C ../glibc-${glibc.minorRelease}/malloc objdir=`pwd` `pwd`/malloc/mtrace;
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runHook postBuild
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'';
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installPhase = ''
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mkdir -p $out/bin
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mv malloc/mtrace $out/bin/
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'';
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# Perl interpreter used for `mtrace`.
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buildInputs = [ perl ];
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# Reset a few things declared by `pkgs.glibc`.
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outputs = [ "out" ];
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separateDebugInfo = false;
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meta = meta // {
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description = "Perl script used to interpret and provide human readable output of the trace log contained in the file mtracedata, whose contents were produced by mtrace(3).";
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};
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})
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