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| author | Francois-Xavier Coudert <fxcoudert@gcc.gnu.org> | 2011-11-08 23:15:11 +0000 |
|---|---|---|
| committer | François-Xavier Coudert <fxcoudert@gcc.gnu.org> | 2011-11-08 23:15:11 +0000 |
| commit | b8bc0ff76b12959e1aefafda407c03604605728c (patch) | |
| tree | 446e102781c3c6ba28c0236407a02027e2d0996b /gcc/fortran/expr.c | |
| parent | 6ef982714cf2a0a796cd55805ceeeaa07726a903 (diff) | |
| download | gcc-b8bc0ff76b12959e1aefafda407c03604605728c.zip gcc-b8bc0ff76b12959e1aefafda407c03604605728c.tar.gz gcc-b8bc0ff76b12959e1aefafda407c03604605728c.tar.bz2 | |
re PR fortran/50409 (SIGSEGV in gfc_simplify_expr)
PR fortran/50409
* expr.c (gfc_simplify_expr): Substrings can't have negative
length.
* gcc/testsuite/gfortran.dg/string_5.f90: Improve testcase.
From-SVN: r181181
Diffstat (limited to 'gcc/fortran/expr.c')
| -rw-r--r-- | gcc/fortran/expr.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/fortran/expr.c b/gcc/fortran/expr.c index 504c7cf..f241455 100644 --- a/gcc/fortran/expr.c +++ b/gcc/fortran/expr.c @@ -1853,8 +1853,8 @@ gfc_simplify_expr (gfc_expr *p, int type) if (p->ref && p->ref->u.ss.end) gfc_extract_int (p->ref->u.ss.end, &end); - if (end < 0) - end = 0; + if (end < start) + end = start; s = gfc_get_wide_string (end - start + 2); memcpy (s, p->value.character.string + start, |