[Bug analyzer/113999] [14 Regression] ICE: in string_cst_has_null_terminator, at analyzer/region-model.cc:3651 with -fanalyzer on gcc.dg/tree-ssa/strncpy-2.c

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113999

--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by David Malcolm <dmalcolm@gcc.gnu.org>:

https://gcc.gnu.org/g:0a6a5f8656ccf9a60ac516c68cd4eb40ff4630c4

commit r14-9091-g0a6a5f8656ccf9a60ac516c68cd4eb40ff4630c4
Author: David Malcolm <dmalcolm@redhat.com>
Date:   Tue Feb 20 19:44:51 2024 -0500

    analyzer: handle array-initialization from a string_cst [PR113999]

    gcc/analyzer/ChangeLog:
            PR analyzer/113999
            * analyzer.h (get_string_cst_size): New decl.
            * region-model-manager.cc (get_string_cst_size): New.
            (region_model_manager::maybe_get_char_from_string_cst): Treat
            single-byte accesses within string_cst but beyond
            TREE_STRING_LENGTH as being 0.
            * region-model.cc (string_cst_has_null_terminator): Likewise.

    gcc/testsuite/ChangeLog:
            PR analyzer/113999
            * c-c++-common/analyzer/strlen-pr113999.c: New test.
            * gcc.dg/analyzer/strlen-1.c: More test coverage.

    Signed-off-by: David Malcolm <dmalcolm@redhat.com>