diff options
Diffstat (limited to 'gcc/fortran/data.c')
| -rw-r--r-- | gcc/fortran/data.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/gcc/fortran/data.c b/gcc/fortran/data.c index ef9101b8d55..07ca6ad8d32 100644 --- a/gcc/fortran/data.c +++ b/gcc/fortran/data.c @@ -104,7 +104,7 @@ static gfc_expr * create_character_initializer (gfc_expr *init, gfc_typespec *ts, gfc_ref *ref, gfc_expr *rvalue) { - int len, start, end; + int len, start, end, tlen; gfc_char_t *dest; bool alloced_init = false; @@ -162,12 +162,22 @@ create_character_initializer (gfc_expr *init, gfc_typespec *ts, else len = rvalue->value.character.length; - if (len > end - start) + tlen = end - start; + if (len > tlen) { - gfc_warning_now (0, "Initialization string starting at %L was " - "truncated to fit the variable (%d/%d)", - &rvalue->where, end - start, len); - len = end - start; + if (tlen < 0) + { + gfc_warning_now (0, "Unused initialization string at %L because " + "variable has zero length", &rvalue->where); + len = 0; + } + else + { + gfc_warning_now (0, "Initialization string at %L was truncated to " + "fit the variable (%d/%d)", &rvalue->where, + tlen, len); + len = tlen; + } } if (rvalue->ts.type == BT_HOLLERITH) @@ -181,7 +191,7 @@ create_character_initializer (gfc_expr *init, gfc_typespec *ts, len * sizeof (gfc_char_t)); /* Pad with spaces. Substrings will already be blanked. */ - if (len < end - start && ref == NULL) + if (len < tlen && ref == NULL) gfc_wide_memset (&dest[start + len], ' ', end - (start + len)); if (rvalue->ts.type == BT_HOLLERITH) |