[Bug analyzer/106394] False positive from -Wanalyzer-allocation-size with empty array

Fri, 22 Jul 2022 12:50:14 -0700 

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106394

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tim Lange <[email protected]>:

https://gcc.gnu.org/g:b4cc945c045db74f719ab030969806c14e2d5fc3

commit r13-1802-gb4cc945c045db74f719ab030969806c14e2d5fc3
Author: Tim Lange <[email protected]>
Date:   Fri Jul 22 21:44:07 2022 +0200

    Fix handling of zero capacity regions in -Wanalyzer-allocation-size
[PR106394]

    This patch unifies the handling of zero capacity regions for structs
    and other types in the allocation size checker.
    Regression-tested on x86_64 Linux.

    2022-07-22  Tim Lange  <[email protected]>

    gcc/analyzer/ChangeLog:

            PR analyzer/106394
            * region-model.cc (capacity_compatible_with_type): Always return
true
            if alloc_size is zero.

    gcc/testsuite/ChangeLog:

            PR analyzer/106394
            * gcc.dg/analyzer/pr106394.c: New test.

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