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| author | Harald Anlauf <anlauf@gmx.de> | 2021-06-16 22:04:22 +0200 |
|---|---|---|
| committer | Harald Anlauf <anlauf@gmx.de> | 2021-06-16 22:04:22 +0200 |
| commit | cfe0a2ec26867b290eb84af00317e60f8b67455c (patch) | |
| tree | 17f50fba55e37cf752b6eff135f30711bb3ca6c5 /gcc/fortran/parse.c | |
| parent | d117f992d81b783aa7cbff4c9fde9b96b70a93ed (diff) | |
| download | gcc-cfe0a2ec26867b290eb84af00317e60f8b67455c.zip gcc-cfe0a2ec26867b290eb84af00317e60f8b67455c.tar.gz gcc-cfe0a2ec26867b290eb84af00317e60f8b67455c.tar.bz2 | |
Fortran - ICE in gfc_check_do_variable, at fortran/parse.c:4446
Avoid NULL pointer dereferences during error recovery.
gcc/fortran/ChangeLog:
PR fortran/95501
PR fortran/95502
* expr.c (gfc_check_pointer_assign): Avoid NULL pointer
dereference.
* match.c (gfc_match_pointer_assignment): Likewise.
* parse.c (gfc_check_do_variable): Avoid comparison with NULL
symtree.
gcc/testsuite/ChangeLog:
PR fortran/95501
PR fortran/95502
* gfortran.dg/pr95502.f90: New test.
Diffstat (limited to 'gcc/fortran/parse.c')
| -rw-r--r-- | gcc/fortran/parse.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/fortran/parse.c b/gcc/fortran/parse.c index 0522b39..6d7845e 100644 --- a/gcc/fortran/parse.c +++ b/gcc/fortran/parse.c @@ -4588,6 +4588,9 @@ gfc_check_do_variable (gfc_symtree *st) { gfc_state_data *s; + if (!st) + return 0; + for (s=gfc_state_stack; s; s = s->previous) if (s->do_variable == st) { |