CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2015/10/07 04:26:23
Modified files:
gnu/gcc/gcc/cp : parser.c
Log message:
Correct handling of enum attributes with g++
gcc and g++ can currently have different ideas on the size of a
packed enum type:
enum __attribute__((packed)) foo { a = 0, b};
gcc: 1
g++: 4
enum foo { a = 0, b} __attribute__((packed));
gcc: 1
g++: 1
The first format is actually the preferred one according to the
documentation.
https://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Type-Attributes.html
g++ will accept the first format and silently not actually choose a
smaller size.
This was responsible for memory corruption with recent versions
of Mesa where c and c++ code share a header with a packed enum type.
The problem was reported in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39219
and fixed in gcc >= 4.3.6 in rev 144284.
This was after the switch from gplv2 but it's a trivial one line change.
ok guenther@ deraadt@ kettenis@
