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gccrs: Clear the substitution callbacks when copying ArgumentMappings

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When we set the callback on substitutions this is not safe to be copied
around since we store the used argument mappings and can reuse them in
different contexts. This clears the callback on copy's to make it safer.

Signed-off-by: Philip Herron <herron.philip@googlemail.com>

gcc/rust/ChangeLog:

	* typecheck/rust-tyty-subst.cc: update copy constructors
This commit is contained in:
Philip Herron
2023-01-27 18:31:11 +00:00
committed by Arthur Cohen
parent dcb2e571ac
commit 2f228578d5
1 changed files with 2 additions and 2 deletions
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4
gcc/rust/typecheck/rust-tyty-subst.cc
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@@ -241,7 +241,7 @@ SubstitutionArgumentMappings::SubstitutionArgumentMappings (
SubstitutionArgumentMappings::SubstitutionArgumentMappings (
const SubstitutionArgumentMappings &other)
: mappings (other.mappings), binding_args (other.binding_args),
locus (other.locus), param_subst_cb (other.param_subst_cb),
locus (other.locus), param_subst_cb (nullptr),
trait_item_flag (other.trait_item_flag)
{}
@@ -252,7 +252,7 @@ SubstitutionArgumentMappings::operator= (
mappings = other.mappings;
binding_args = other.binding_args;
locus = other.locus;
param_subst_cb = other.param_subst_cb;
param_subst_cb = nullptr;
trait_item_flag = other.trait_item_flag;
return *this;