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riscv-gcc-1
Commit a6665f8c by Richard Stallman
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(block_alloc): Don't dereference a NULL pointer. 

From-SVN: r4425
parent 13b8df74
Showing with 1 additions and 0 deletions
gcc/local-alloc.c
...@@ -1250,6 +1250,7 @@ block_alloc (b) ...@@ -1250,6 +1250,7 @@ block_alloc (b)
&& (r0 = XEXP (PATTERN (insn), 0), && (r0 = XEXP (PATTERN (insn), 0),
GET_CODE (r0) == REG) GET_CODE (r0) == REG)
&& (link = find_reg_note (insn, REG_LIBCALL, NULL_RTX)) != 0 && (link = find_reg_note (insn, REG_LIBCALL, NULL_RTX)) != 0
&& XEXP (link, 0) != 0
&& GET_CODE (XEXP (link, 0)) == INSN && GET_CODE (XEXP (link, 0)) == INSN
&& (set = single_set (XEXP (link, 0))) != 0 && (set = single_set (XEXP (link, 0))) != 0
&& SET_DEST (set) == r0 && SET_SRC (set) == r0 && SET_DEST (set) == r0 && SET_SRC (set) == r0
......
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