10c550bfab
Without this patch, gcc-4.9.1 miscompiles glibc-2.20 setxid NTPL code, resulting in setgid() returning ENOSYS.
14 lines
637 B
Diff
14 lines
637 B
Diff
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801
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--- gcc/sched-deps.c 2014/04/11 12:49:40 209304
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+++ gcc/sched-deps.c 2014/07/17 07:48:49 212739
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@@ -2750,7 +2750,8 @@
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Consider for instance a volatile asm that changes the fpu rounding
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mode. An insn should not be moved across this even if it only uses
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pseudo-regs because it might give an incorrectly rounded result. */
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- if (code != ASM_OPERANDS || MEM_VOLATILE_P (x))
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+ if ((code != ASM_OPERANDS || MEM_VOLATILE_P (x))
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+ && !DEBUG_INSN_P (insn))
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reg_pending_barrier = TRUE_BARRIER;
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/* For all ASM_OPERANDS, we must traverse the vector of input operands.
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