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Let me know if you have any comment or suggestions. Thanks. Qing. ======================================= From c022076169b4f1990b91f7daf4cc52c6c5535228 Mon Sep 17 00:00:00 2001 From: Qing Zhao Date: Tue, 20 Dec 2022 16:13:04 +0000 Subject: [PATCH] gcc-13/changes: Mention -fstrict-flex-arrays and its impact. --- htdocs/gcc-13/changes.html | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/htdocs/gcc-13/changes.html b/htdocs/gcc-13/changes.html index 689178f9..47b3d40f 100644 --- a/htdocs/gcc-13/changes.html +++ b/htdocs/gcc-13/changes.html @@ -39,6 +39,10 @@ a work-in-progress.

  • Legacy debug info compression option -gz=zlib-gnu was removed and the option is ignored right now.
  • New debug info compression option value -gz=zstd has been added.
    • +
  • -Warray-bounds=2 will no longer issue warnings for out of bounds + accesses to trailing struct members of one-element array type anymore. Please + add -fstrict-flex-arrays=level to control how the compiler treat + trailing arrays of structures as flexible array members.
    • @@ -409,6 +413,17 @@ a work-in-progress.

    Other significant improvements

    +

    Treating trailing arrays as flexible array members

    + +
      +
    • GCC can now control when to treat the trailing array of a structure as a + flexible array member for the purpose of accessing the elements of such + an array. By default, all trailing arrays of structures are treated as + flexible array members. Use the new command-line option + -fstrict-flex-array=level to control how GCC treats the trailing + array of a structure as a flexible array member at different levels. +
      • +