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bindings: ruby: fix unexpected uc_query result pointer type #1962

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@anthraxx anthraxx commented Jun 5, 2024

uc_query expects a size_t *, while we are passing uc_arch *. This has been working for a while as gcc just warned about this, however with latest gcc this changed into an error:

unicorn.c:122:34: error: passing argument 3 of ‘uc_query’ from incompatible pointer type [-Wincompatible-pointer-types]
206 | uc_query(_uc, UC_QUERY_ARCH, &arch);
unicorn.h:689:60: note: expected ‘size_t *’ {aka ‘long unsigned int *’} but argument is of type ‘uc_arch *’
689 | uc_err uc_query(uc_engine *uc, uc_query_type type, size_t *result);

Fix this issue by querying the result into a size_t and later downcast the result into an uc_arch enum.

uc_query expects a size_t *, while we are passing uc_arch *. This has
been working for a while as gcc just warned about this, however with
latest gcc this changed into an error:

unicorn.c:122:34: error: passing argument 3 of ‘uc_query’ from incompatible pointer type [-Wincompatible-pointer-types]
  206 |     uc_query(_uc, UC_QUERY_ARCH, &arch);
unicorn.h:689:60: note: expected ‘size_t *’ {aka ‘long unsigned int *’} but argument is of type ‘uc_arch *’
  689 | uc_err uc_query(uc_engine *uc, uc_query_type type, size_t *result);

Fix this issue by querying the result into a size_t and later downcast
the result into an uc_arch enum.
@wtdcode
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wtdcode commented Jul 19, 2024

Could you send this to the dev branch?

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