* [PATCH] PR fortran/67804 - ICE on data initialization of type(character) with wrong data
@ 2022-01-12 20:29 Harald Anlauf
2022-01-13 12:04 ` Mikael Morin
0 siblings, 1 reply; 2+ messages in thread
From: Harald Anlauf @ 2022-01-12 20:29 UTC (permalink / raw)
To: fortran, gcc-patches
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Dear Fortranners,
the attached patch improves error recovery after an invalid
structure constructor has been detected in a DATA statement.
Testcase by Gerhard.
Regtested on x86_64-pc-linux-gnu. OK for mainline?
This should be a rather safe patch which I would like to
backport to 11-branch after a suitable waiting period.
Thanks,
Harald
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From 31436189cb28590407030000ec6baff816cd63ef Mon Sep 17 00:00:00 2001
From: Harald Anlauf <anlauf@gmx.de>
Date: Wed, 12 Jan 2022 21:24:49 +0100
Subject: [PATCH] Fortran: fix error recovery on bad structure constructor in
DATA statement
gcc/fortran/ChangeLog:
PR fortran/67804
* primary.c (gfc_match_structure_constructor): Recover from errors
that occurred while checking for a valid structure constructor in
a DATA statement.
gcc/testsuite/ChangeLog:
PR fortran/67804
* gfortran.dg/pr93604.f90: Adjust to changed diagnostics.
* gfortran.dg/pr67804.f90: New test.
---
gcc/fortran/primary.c | 15 ++++++++++++---
gcc/testsuite/gfortran.dg/pr67804.f90 | 25 +++++++++++++++++++++++++
gcc/testsuite/gfortran.dg/pr93604.f90 | 2 +-
3 files changed, 38 insertions(+), 4 deletions(-)
create mode 100644 gcc/testsuite/gfortran.dg/pr67804.f90
diff --git a/gcc/fortran/primary.c b/gcc/fortran/primary.c
index fd4d6af50c0..3f01f67cd49 100644
--- a/gcc/fortran/primary.c
+++ b/gcc/fortran/primary.c
@@ -3364,6 +3364,7 @@ gfc_match_structure_constructor (gfc_symbol *sym, gfc_expr **result)
match m;
gfc_expr *e;
gfc_symtree *symtree;
+ bool t = true;
gfc_get_ha_sym_tree (sym->name, &symtree);
@@ -3394,10 +3395,18 @@ gfc_match_structure_constructor (gfc_symbol *sym, gfc_expr **result)
in the structure constructor must be a constant. Try to reduce the
expression here. */
if (gfc_in_match_data ())
- gfc_reduce_init_expr (e);
+ t = gfc_reduce_init_expr (e);
- *result = e;
- return MATCH_YES;
+ if (t)
+ {
+ *result = e;
+ return MATCH_YES;
+ }
+ else
+ {
+ gfc_free_expr (e);
+ return MATCH_ERROR;
+ }
}
diff --git a/gcc/testsuite/gfortran.dg/pr67804.f90 b/gcc/testsuite/gfortran.dg/pr67804.f90
new file mode 100644
index 00000000000..e2009a5bfdb
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr67804.f90
@@ -0,0 +1,25 @@
+! { dg-do compile }
+! PR fortran/67804 - ICE on bad type in structure constructor in DATA statement
+! Contributed by G.Steinmetz
+
+program p
+ type t
+ character :: c
+ end type
+ type u
+ character, pointer :: c
+ end type
+ type(t) :: x0, x1, x2, x3, x4, x5, x6, x7, x8, x9
+ type(u) :: y6
+ data x0 /t('a')/ ! OK
+ data x1 /t(1)/ ! { dg-error "Cannot convert" }
+ data x2 /t(1.)/ ! { dg-error "Cannot convert" }
+ data x3 /t(1d1)/ ! { dg-error "Cannot convert" }
+ data x4 /t((0.,1.))/ ! { dg-error "Cannot convert" }
+ data x5 /t(.true.)/ ! { dg-error "Cannot convert" }
+ data x6 /t(null())/ ! { dg-error "neither a POINTER nor ALLOCATABLE" }
+ data x7 /t(['1'])/ ! { dg-error "The rank of the element" }
+ data x8 /t([1])/ ! { dg-error "Cannot convert" }
+ data x9 /t(z'0')/ ! { dg-error "Cannot convert" }
+ data y6 /u(null())/ ! OK
+end
diff --git a/gcc/testsuite/gfortran.dg/pr93604.f90 b/gcc/testsuite/gfortran.dg/pr93604.f90
index 2c695d37829..4040155120c 100644
--- a/gcc/testsuite/gfortran.dg/pr93604.f90
+++ b/gcc/testsuite/gfortran.dg/pr93604.f90
@@ -5,6 +5,6 @@ program p
integer :: a
end type
type(t) :: x
- data x /t(z'1')/ ! { dg-error "cannot appear in a structure constructor" }
+ data x /t(z'1')/ ! { dg-error "BOZ" }
end
--
2.31.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] PR fortran/67804 - ICE on data initialization of type(character) with wrong data
2022-01-12 20:29 [PATCH] PR fortran/67804 - ICE on data initialization of type(character) with wrong data Harald Anlauf
@ 2022-01-13 12:04 ` Mikael Morin
0 siblings, 0 replies; 2+ messages in thread
From: Mikael Morin @ 2022-01-13 12:04 UTC (permalink / raw)
To: Harald Anlauf, fortran, gcc-patches
Le 12/01/2022 à 21:29, Harald Anlauf via Fortran a écrit :
> Dear Fortranners,
>
> the attached patch improves error recovery after an invalid
> structure constructor has been detected in a DATA statement.
>
> Testcase by Gerhard.
>
> Regtested on x86_64-pc-linux-gnu. OK for mainline?
>
> This should be a rather safe patch which I would like to
> backport to 11-branch after a suitable waiting period.
>
OK; thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
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