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libexpr: Use GC_set_sp_corrector instead of patch

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Manually tested by printing to stderr in both branches (sp in os
stack, or not), and triggering a GC in a filterSource function,
e.g.:

    let
      generateTree = n: if n == 0 then "ha" else { left = generateTree (n - 1); right = generateTree (n - 1); };
    in
      builtins.deepSeq (generateTree 18) ...

Note that the darwin still uses the strategy of disabling GC, despite
having an implementation that compiles. The proper solution will be
enabled and tested later.
This commit is contained in:
Robert Hensing 2024-02-27 19:42:41 +01:00
parent 2edcdf8508
commit 2477e4e3b8
5 changed files with 62 additions and 111 deletions
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2
configure.ac
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@ -366,7 +366,7 @@ fi
AC_ARG_ENABLE(gc, AS_HELP_STRING([--enable-gc],[enable garbage collection in the Nix expression evaluator (requires Boehm GC) [default=yes]]),
gc=$enableval, gc=yes)
if test "$gc" = yes; then
PKG_CHECK_MODULES([BDW_GC], [bdw-gc])
PKG_CHECK_MODULES([BDW_GC], [bdw-gc >= 8.2.4])
CXXFLAGS="$BDW_GC_CFLAGS $CXXFLAGS"
AC_DEFINE(HAVE_BOEHMGC, 1, [Whether to use the Boehm garbage collector.])
fi