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| author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2018-11-04 19:46:08 +0000 |
|---|---|---|
| committer | Bernd Edlinger <edlinger@gcc.gnu.org> | 2018-11-04 19:46:08 +0000 |
| commit | 770fe3a36400fb03d0936cff86ffb76a136d5674 (patch) | |
| tree | 2cfa74f84366dc63ad9ff43c84f8575fd561af72 /gcc/tree-ssa-strlen.c | |
| parent | e237f9f31d463d7a4616b70519f5bc6eb38750e5 (diff) | |
| download | gcc-770fe3a36400fb03d0936cff86ffb76a136d5674.zip gcc-770fe3a36400fb03d0936cff86ffb76a136d5674.tar.gz gcc-770fe3a36400fb03d0936cff86ffb76a136d5674.tar.bz2 | |
re PR tree-optimization/87672 (81512c36 causes ICE in bootstrap stage 3 using "-D_FORTIFY_SOURCE=2" (invalid operand in unary operation, incorrect sharing of tree nodes, verify_gimple failed))
gcc:
2018-11-04 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR tree-optimization/87672
* gimple-fold.c (gimple_fold_builtin_stxcpy_chk): Gimplify.
* tree-ssa-strlen.c (handle_builtin_strcat): Adjust object size.
testsuite:
2018-11-04 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR tree-optimization/87672
* gcc.dg/pr87672.c: New test.
From-SVN: r265777
Diffstat (limited to 'gcc/tree-ssa-strlen.c')
| -rw-r--r-- | gcc/tree-ssa-strlen.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/tree-ssa-strlen.c b/gcc/tree-ssa-strlen.c index d508d36..669c315 100644 --- a/gcc/tree-ssa-strlen.c +++ b/gcc/tree-ssa-strlen.c @@ -2605,12 +2605,19 @@ handle_builtin_strcat (enum built_in_function bcode, gimple_stmt_iterator *gsi) if (endptr) dst = fold_convert_loc (loc, TREE_TYPE (dst), unshare_expr (endptr)); else - dst = fold_build2_loc (loc, POINTER_PLUS_EXPR, - TREE_TYPE (dst), unshare_expr (dst), + dst = fold_build2_loc (loc, POINTER_PLUS_EXPR, TREE_TYPE (dst), dst, fold_convert_loc (loc, sizetype, unshare_expr (dstlen))); dst = force_gimple_operand_gsi (gsi, dst, true, NULL_TREE, true, GSI_SAME_STMT); + if (objsz) + { + objsz = fold_build2_loc (loc, MINUS_EXPR, TREE_TYPE (objsz), objsz, + fold_convert_loc (loc, TREE_TYPE (objsz), + unshare_expr (dstlen))); + objsz = force_gimple_operand_gsi (gsi, objsz, true, NULL_TREE, true, + GSI_SAME_STMT); + } if (dump_file && (dump_flags & TDF_DETAILS) != 0) { fprintf (dump_file, "Optimizing: "); |