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Merge pull request #10486 from tweag/jl/c-api_function-pointer

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C API: Safer function pointer casting
This commit is contained in:
Eelco Dolstra 2024-04-16 18:56:08 +02:00 • committed by GitHub
commit 74e4bc9b1d
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8 changed files with 35 additions and 28 deletions
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3
tests/unit/libutil-support/tests/string_callback.cc
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@ -2,7 +2,8 @@
namespace nix::testing {
void observe_string_cb(const char * start, unsigned int n, std::string * user_data) {
void observe_string_cb(const char * start, unsigned int n, std::string * user_data)
{
*user_data = std::string(start);
}

8
tests/unit/libutil-support/tests/string_callback.hh
View file

@ -4,9 +4,13 @@
namespace nix::testing {
void observe_string_cb(const char * start, unsigned int n, std::string * user_data);
inline void * observe_string_cb_data(std::string & out) {
inline void * observe_string_cb_data(std::string & out)
{
return (void *) &out;
};
#define OBSERVE_STRING(str) (void *)nix::testing::observe_string_cb, nix::testing::observe_string_cb_data(str)
#define OBSERVE_STRING(str) \
(nix_get_string_callback) nix::testing::observe_string_cb, nix::testing::observe_string_cb_data(str)
}