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fix "Embedding the Nix Evaluator" c api example

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This commit is contained in:
Philipp Zander 2024-05-16 00:39:39 +02:00
parent 303268bb71
commit 449404531d
1 changed files with 3 additions and 3 deletions
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6
doc/external-api/README.md
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@ -46,9 +46,9 @@ Nix expression `builtins.nixVersion`.
// NOTE: This example lacks all error handling. Production code must check for
// errors, as some return values will be undefined.
void my_get_string_cb(const char * start, unsigned int n, char ** user_data)
void my_get_string_cb(const char * start, unsigned int n, void * user_data)
{
*user_data = strdup(start);
*((char **) user_data) = strdup(start);
}
int main()
@ -63,7 +63,7 @@ int main()
nix_value_force(NULL, state, value);
char * version;
nix_get_string(NULL, value, my_get_string_cb, version);
nix_get_string(NULL, value, my_get_string_cb, &version);
printf("Nix version: %s\n", version);
free(version);