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| author | Richard Kenner <kenner@gcc.gnu.org> | 1992-11-03 14:57:52 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1992-11-03 14:57:52 -0500 |
| commit | a8fc41afdd494825e0df0225a1e60f23a43f309a (patch) | |
| tree | a403d1c499f3528ec515a74786d9472381ffdfb8 /gcc | |
| parent | b76e0b7680d1e2a13af717e52475e5114208c33e (diff) | |
| download | gcc-a8fc41afdd494825e0df0225a1e60f23a43f309a.zip gcc-a8fc41afdd494825e0df0225a1e60f23a43f309a.tar.gz gcc-a8fc41afdd494825e0df0225a1e60f23a43f309a.tar.bz2 | |
(jump_optimize): Ensure operand of REG_NOTES is an INSN; otherwise, we
might try to read outside allocated memory.
From-SVN: r2684
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/jump.c | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -837,6 +837,7 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan) && this_is_condjump && ! this_is_simplejump && BRANCH_COST >= 3 && (temp = next_nonnote_insn (insn)) != 0 + && GET_CODE (temp) == INSN && REG_NOTES (temp) == 0 && (reallabelprev == temp || ((temp2 = next_active_insn (temp)) != 0 @@ -874,8 +875,10 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan) && this_is_condjump && ! this_is_simplejump && BRANCH_COST >= 4 && (temp = next_nonnote_insn (insn)) != 0 + && GET_CODE (temp) == INSN && REG_NOTES (temp) == 0 && (temp3 = next_nonnote_insn (temp)) != 0 + && GET_CODE (temp3) == INSN && REG_NOTES (temp3) == 0 && (reallabelprev == temp3 || ((temp2 = next_active_insn (temp3)) != 0 @@ -920,8 +923,10 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan) && this_is_condjump && ! this_is_simplejump && BRANCH_COST >= 4 && (temp = next_nonnote_insn (insn)) != 0 + && GET_CODE (temp) == INSN && REG_NOTES (temp) == 0 && (temp3 = next_nonnote_insn (temp)) != 0 + && GET_CODE (temp3) == INSN && REG_NOTES (temp3) == 0 && (reallabelprev == temp3 || ((temp2 = next_active_insn (temp3)) != 0 |