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| author | Alan Modra <amodra@gmail.com> | 2021-09-02 09:05:05 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2021-09-22 17:14:17 +0930 |
| commit | b0321032658d875bee7584d8e3a8cbdd275c99d5 (patch) | |
| tree | 09434b749884e6286edfef2caddc5a6155367831 /gcc | |
| parent | a9b3c451be58f0fe660154323ace7ba72a4211ec (diff) | |
| download | gcc-b0321032658d875bee7584d8e3a8cbdd275c99d5.zip gcc-b0321032658d875bee7584d8e3a8cbdd275c99d5.tar.gz gcc-b0321032658d875bee7584d8e3a8cbdd275c99d5.tar.bz2 | |
obstack.h __PTR_ALIGN vs. ubsan
Current ubsan complains on every use of __PTR_ALIGN (when ptrdiff_t is
as large as a pointer), due to making calculations relative to a NULL
pointer. This patch avoids the problem by extracting out and
simplifying __BPTR_ALIGN for the usual case. I've continued to use
ptrdiff_t here, where it might be better to throw away __BPTR_ALIGN
entirely and just assume uintptr_t exists.
* obstack.h (__PTR_ALIGN): Expand and simplify __BPTR_ALIGN
rather than calculating relative to a NULL pointer.
Diffstat (limited to 'gcc')
0 files changed, 0 insertions, 0 deletions