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authorRich Felker <dalias@aerifal.cx>2019-06-25 18:50:05 -0400
committerRich Felker <dalias@aerifal.cx>2019-06-25 19:05:40 -0400
commit54b7564b72c1edcc79fca083047521fb56eaea00 (patch)
tree4756518df5e03dc40701b157fec55e7f54e414e7 /crt/i386
parent95dfa3dd12108f42b23a1083e7b32266246a3590 (diff)
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remove unnecessary and problematic _Noreturn from crt/ldso startup
after commit a48ccc159a5fa061a18419296100ee48a1cd6cc9 removed the use
of _Noreturn on the stage3_func type (which only worked due to it
being defined to the "GNU C" attribute in C99 mode), GCC could no
longer assume that the ends of __dls2 and __dls2b are unreachable, and
produced a warning that a function marked _Noreturn returns.

also, since commit 4390383b32250a941ec616e8bff6f568a801b1c0, the
_Noreturn declaration for __libc_start_main in crt1/rcrt1 has been not
only inconsistent with the definition, but wrong. formally,
__libc_start_main does return, via a (hopefully) tail call to a helper
function after the barrier. incorrect usage of _Noreturn in the
declaration was probably formal UB.

the _Noreturn specifiers were not useful in any of these places, so
remove them all. now, the only remaining usage of _Noreturn is in
public interfaces where _Noreturn is part of their contract.
Diffstat (limited to 'crt/i386')
0 files changed, 0 insertions, 0 deletions