b6eaf90c64
This patch extends: -Wanalyzer-write-to-const -Wanalyzer-write-to-string-literal so that they will check for __attribute__ ((access, ....) on calls to externally-defined functions, and complain about read-only regions pointed to by arguments marked with a "write_only" or "read_write" attribute. gcc/analyzer/ChangeLog: PR analyzer/104793 * region-model.cc (region_model::check_external_function_for_access_attr): New. (region_model::handle_unrecognized_call): Call it. * region-model.h (region_model::check_external_function_for_access_attr): New decl. (region_model::handle_unrecognized_call): New decl. gcc/testsuite/ChangeLog: PR analyzer/104793 * gcc.dg/analyzer/write-to-const-2.c: New test. * gcc.dg/analyzer/write-to-function-1.c: New test. * gcc.dg/analyzer/write-to-string-literal-2.c: New test. * gcc.dg/analyzer/write-to-string-literal-3.c: New test. * gcc.dg/analyzer/write-to-string-literal-4.c: New test. Signed-off-by: David Malcolm <dmalcolm@redhat.com> |
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