diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-01-03 07:20:04 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-01-03 07:20:04 +0000 |
| commit | 418624fa006fc343b05f8e596fab7b7214c03c06 (patch) | |
| tree | 4fa7ba8f61eb91be1857c52eae3cadc7f87666c4 /gcc/gimple-ssa-sprintf.c | |
| parent | 8ecf773ba34e40a7c2a3e30a0f687ee7c8e1df48 (diff) | |
| download | gcc-418624fa006fc343b05f8e596fab7b7214c03c06.tar.gz | |
PR middle-end/78901
* gimple-ssa-sprintf.c (try_substitute_return_value): Don't change
possibly throwing calls.
* g++.dg/opt/pr78901.C: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244013 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/gimple-ssa-sprintf.c')
| -rw-r--r-- | gcc/gimple-ssa-sprintf.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/gimple-ssa-sprintf.c b/gcc/gimple-ssa-sprintf.c index 907a06479ee..ecd2267ae93 100644 --- a/gcc/gimple-ssa-sprintf.c +++ b/gcc/gimple-ssa-sprintf.c @@ -2696,9 +2696,15 @@ try_substitute_return_value (gimple_stmt_iterator *gsi, the output overflows the destination object (but leave it enabled when the function is bounded because then the behavior is well- defined). */ - if (lhs && res.bounded && res.under4k + if (lhs + && res.bounded + && res.under4k && (info.bounded || res.number_chars <= info.objsize) - && res.number_chars - 1 <= target_int_max ()) + && res.number_chars - 1 <= target_int_max () + /* Not prepared to handle possibly throwing calls here; they shouldn't + appear in non-artificial testcases, except when the __*_chk routines + are badly declared. */ + && !stmt_ends_bb_p (info.callstmt)) { tree cst = build_int_cst (integer_type_node, res.number_chars - 1); |