|author||Rich Felker <email@example.com>||2015-03-06 13:27:08 -0500|
|committer||Rich Felker <firstname.lastname@example.org>||2015-03-06 13:27:08 -0500|
fix over-alignment of TLS, insufficient builtin TLS on 64-bit archs
a conservative estimate of 4*sizeof(size_t) was used as the minimum alignment for thread-local storage, despite the only requirements being alignment suitable for struct pthread and void* (which struct pthread already contains). additional alignment required by the application or libraries is encoded in their headers and is already applied. over-alignment prevented the builtin_tls array from ever being used in dynamic-linked programs on 64-bit archs, thereby requiring allocation at startup even in programs with no TLS of their own.
Diffstat (limited to 'include/float.h')
0 files changed, 0 insertions, 0 deletions