diff options
| author | Harald Anlauf <anlauf@gmx.de> | 2020-05-30 20:50:59 +0200 |
|---|---|---|
| committer | Harald Anlauf <anlauf@gmx.de> | 2020-05-30 20:50:59 +0200 |
| commit | bf5fbbbd8c9a3385c1083cc80683bdb0195b1ffc (patch) | |
| tree | af785d2b77191f9ee6f5b7ee3b7918a0fcc15e5f /gcc/fortran | |
| parent | 9df0ff5f219b9e93d007f42939a6449ce2521cf5 (diff) | |
| download | gcc-bf5fbbbd8c9a3385c1083cc80683bdb0195b1ffc.zip gcc-bf5fbbbd8c9a3385c1083cc80683bdb0195b1ffc.tar.gz gcc-bf5fbbbd8c9a3385c1083cc80683bdb0195b1ffc.tar.bz2 | |
PR fortran/95090 - ICE: identifier overflow
Implement buffer overrun check for temporary that holds mangled names.
2020-05-30 Harald Anlauf <anlauf@gmx.de>
gcc/fortran/
PR fortran/95090
* class.c (get_unique_type_string): Use buffer overrun check.
Diffstat (limited to 'gcc/fortran')
| -rw-r--r-- | gcc/fortran/class.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/fortran/class.c b/gcc/fortran/class.c index db395624a..afd8885 100644 --- a/gcc/fortran/class.c +++ b/gcc/fortran/class.c @@ -484,7 +484,14 @@ get_unique_type_string (char *string, gfc_symbol *derived) if (derived->attr.unlimited_polymorphic) strcpy (dt_name, "STAR"); else - strncpy (dt_name, gfc_dt_upper_string (derived->name), sizeof (dt_name)); + { + const char *upper = gfc_dt_upper_string (derived->name); + size_t len = strnlen (upper, sizeof (dt_name)); + if (len >= sizeof (dt_name)) + gfc_internal_error ("get_unique_type_string: identifier overflow"); + memcpy (dt_name, upper, len); + dt_name[len] = '\0'; + } if (derived->attr.unlimited_polymorphic) sprintf (string, "_%s", dt_name); else if (derived->module) |