libatomic/cas_n.c · 5d5cb4d4c12b658375e64c9854b87fb3c3870d36 · lvzhengyang / riscv-gcc-1

re PR c++/60272 (atomic<>::compare_exchange_weak has spurious store and can cause race conditions) · 672ce939

PR c++/60272

gcc/
	* builtins.c (expand_builtin_atomic_compare_exchange): Conditionalize
	on failure the store back into EXPECT.
libatomic/
	* cas_n.c (libat_compare_exchange): Conditionalize on failure
	the store back to EPTR.

From-SVN: r207966

committed Feb 20, 2014

672ce939

cas_n.c 3.46 KB