From 24707fb6b8143d3f969c0fe5c6c3be936813ea31 Mon Sep 17 00:00:00 2001
From: Virgile Prevosto <virgile.prevosto@m4x.org>
Date: Tue, 14 Mar 2023 18:17:56 +0100
Subject: [PATCH] [machdep] add missing POSIX macros
---
share/machdeps/machdep-schema.yaml | 18 ++++++++++++++++++
share/machdeps/machdep_avr_16.yaml | 3 +++
share/machdeps/machdep_gcc_x86_16.yaml | 3 +++
share/machdeps/machdep_gcc_x86_32.yaml | 3 +++
share/machdeps/machdep_gcc_x86_64.yaml | 3 +++
share/machdeps/machdep_msvc_x86_64.yaml | 3 +++
share/machdeps/machdep_ppc_32.yaml | 3 +++
share/machdeps/machdep_x86_16.yaml | 3 +++
share/machdeps/machdep_x86_32.yaml | 3 +++
share/machdeps/machdep_x86_64.yaml | 3 +++
share/machdeps/make_machdep/limits_macros.c | 5 +++++
share/machdeps/make_machdep/make_machdep.py | 1 +
src/kernel_internals/runtime/machdep.ml | 3 +++
src/kernel_services/ast_data/cil_types.ml | 3 +++
.../ast_queries/cil_datatype.ml | 3 +++
src/kernel_services/ast_queries/file.ml | 3 +++
.../oracle/realloc_multiple.0.res.oracle | 14 +++++++-------
.../oracle/realloc_multiple.1.res.oracle | 18 +++++++++---------
tests/builtins/oracle/strnlen.res.oracle | 2 +-
tests/misc/custom_machdep.ml | 3 +++
tests/misc/custom_machdep.yaml | 3 +++
tests/syntax/machdep_char_unsigned.ml | 3 +++
22 files changed, 89 insertions(+), 17 deletions(-)
create mode 100644 share/machdeps/make_machdep/limits_macros.c
diff --git a/share/machdeps/machdep-schema.yaml b/share/machdeps/machdep-schema.yaml
index 38d83deb099..b4d47f81ac0 100644
--- a/share/machdeps/machdep-schema.yaml
+++ b/share/machdeps/machdep-schema.yaml
@@ -136,6 +136,12 @@ has__builtin_va_list:
type: boolean
+host_name_max:
+
+ description: expansion of 'HOST_NAME_MAX' POSIX macro
+
+ type: string
+
int_fast8_t:
description: definition of 'int_fast8_t'
@@ -197,6 +203,12 @@ nsig:
type: string
+path_max:
+
+ description: expansion of 'PATH_MAX' POSIX macro
+
+ type: string
+
posix_version:
description: |
value of the macro '_POSIX_VERSION'
@@ -304,6 +316,12 @@ tmp_max:
type: string
+tty_name_max:
+
+ description: value of 'TTY_NAME_MAX' POSIX macro
+
+ type: string
+
uint_fast8_t:
description: definition of 'uint_fast8_t'
diff --git a/share/machdeps/machdep_avr_16.yaml b/share/machdeps/machdep_avr_16.yaml
index 9d27004bf79..31f2b2ee060 100644
--- a/share/machdeps/machdep_avr_16.yaml
+++ b/share/machdeps/machdep_avr_16.yaml
@@ -141,6 +141,7 @@ errno:
filename_max: '4096'
fopen_max: '16'
has__builtin_va_list: true
+host_name_max: '64'
int_fast16_t: int
int_fast32_t: int
int_fast64_t: long long
@@ -151,6 +152,7 @@ little_endian: true
machdep_name: machdep_avr_16
mb_cur_max: ((size_t)16)
nsig: (64 + 1)
+path_max: '4096'
posix_version: 200809L
ptrdiff_t: int
rand_max: '2147483647'
@@ -169,6 +171,7 @@ sizeof_void: 1
ssize_t: int
time_t: long
tmp_max: '238328'
+tty_name_max: '32'
uint_fast16_t: unsigned int
uint_fast32_t: unsigned int
uint_fast64_t: unsigned long long
diff --git a/share/machdeps/machdep_gcc_x86_16.yaml b/share/machdeps/machdep_gcc_x86_16.yaml
index 999181ba2de..49022b0b99b 100644
--- a/share/machdeps/machdep_gcc_x86_16.yaml
+++ b/share/machdeps/machdep_gcc_x86_16.yaml
@@ -172,6 +172,9 @@ bufsiz: '8192'
eof: '(-1)'
fopen_max: '16'
filename_max: '2048'
+path_max: '256'
+host_name_max: '64'
+tty_name_max: '32'
l_tmpnam: '2048'
tmp_max: '0xFFFFFFFF'
rand_max: '32767'
diff --git a/share/machdeps/machdep_gcc_x86_32.yaml b/share/machdeps/machdep_gcc_x86_32.yaml
index 53620c5a55d..d474ec51725 100644
--- a/share/machdeps/machdep_gcc_x86_32.yaml
+++ b/share/machdeps/machdep_gcc_x86_32.yaml
@@ -139,6 +139,7 @@ errno:
filename_max: '4096'
fopen_max: '16'
has__builtin_va_list: true
+host_name_max: '64'
int_fast16_t: int
int_fast32_t: int
int_fast64_t: long long
@@ -149,6 +150,7 @@ little_endian: true
machdep_name: machdep_gcc_x86_32
mb_cur_max: ((size_t) 16 )
nsig: (64 + 1)
+path_max: '4096'
posix_version: 200809L
ptrdiff_t: int
rand_max: '2147483647'
@@ -167,6 +169,7 @@ sizeof_void: 1
ssize_t: int
time_t: long
tmp_max: '238328'
+tty_name_max: '32'
uint_fast16_t: unsigned int
uint_fast32_t: unsigned int
uint_fast64_t: unsigned long long
diff --git a/share/machdeps/machdep_gcc_x86_64.yaml b/share/machdeps/machdep_gcc_x86_64.yaml
index 762187987d1..10ba75b7f13 100644
--- a/share/machdeps/machdep_gcc_x86_64.yaml
+++ b/share/machdeps/machdep_gcc_x86_64.yaml
@@ -139,6 +139,7 @@ errno:
filename_max: '4096'
fopen_max: '16'
has__builtin_va_list: true
+host_name_max: '64'
int_fast16_t: long
int_fast32_t: long
int_fast64_t: long
@@ -149,6 +150,7 @@ little_endian: true
machdep_name: machdep_gcc_x86_64
mb_cur_max: ((size_t) 16 )
nsig: (64 + 1)
+path_max: '4096'
posix_version: 200809L
ptrdiff_t: long
rand_max: '2147483647'
@@ -167,6 +169,7 @@ sizeof_void: 1
ssize_t: long
time_t: long
tmp_max: '238328'
+tty_name_max: '32'
uint_fast16_t: unsigned long
uint_fast32_t: unsigned long
uint_fast64_t: unsigned long
diff --git a/share/machdeps/machdep_msvc_x86_64.yaml b/share/machdeps/machdep_msvc_x86_64.yaml
index 39aaae34bab..fd6b2580120 100644
--- a/share/machdeps/machdep_msvc_x86_64.yaml
+++ b/share/machdeps/machdep_msvc_x86_64.yaml
@@ -134,6 +134,9 @@ posix_version: ''
bufsiz: '8192'
eof: '(-1)'
fopen_max: '16'
+host_name_max: '255'
+path_max: '256'
+tty_name_max: '32'
filename_max: '2048'
l_tmpnam: '20'
tmp_max: '0xFFFFFFFF'
diff --git a/share/machdeps/machdep_ppc_32.yaml b/share/machdeps/machdep_ppc_32.yaml
index 57d62e62f9b..a9dfce1010a 100644
--- a/share/machdeps/machdep_ppc_32.yaml
+++ b/share/machdeps/machdep_ppc_32.yaml
@@ -141,6 +141,7 @@ errno:
filename_max: '4096'
fopen_max: '16'
has__builtin_va_list: true
+host_name_max: '64'
int_fast16_t: int
int_fast32_t: int
int_fast64_t: long long
@@ -151,6 +152,7 @@ little_endian: false
machdep_name: machdep_ppc_32
mb_cur_max: ((size_t)16)
nsig: (64 + 1)
+path_max: '4096'
posix_version: 200809L
ptrdiff_t: int
rand_max: '2147483647'
@@ -169,6 +171,7 @@ sizeof_void: 1
ssize_t: int
time_t: long
tmp_max: '238328'
+tty_name_max: '32'
uint_fast16_t: unsigned int
uint_fast32_t: unsigned int
uint_fast64_t: unsigned long long
diff --git a/share/machdeps/machdep_x86_16.yaml b/share/machdeps/machdep_x86_16.yaml
index 5f90098938e..00cd07f7ebf 100644
--- a/share/machdeps/machdep_x86_16.yaml
+++ b/share/machdeps/machdep_x86_16.yaml
@@ -172,6 +172,9 @@ bufsiz: '8192'
eof: '(-1)'
fopen_max: '16'
filename_max: '2048'
+path_max: '256'
+host_name_max: '64'
+tty_name_max: '32'
l_tmpnam: '2048'
tmp_max: '0xFFFFFFFF'
rand_max: '32767'
diff --git a/share/machdeps/machdep_x86_32.yaml b/share/machdeps/machdep_x86_32.yaml
index 63513825a26..d06c7f607bb 100644
--- a/share/machdeps/machdep_x86_32.yaml
+++ b/share/machdeps/machdep_x86_32.yaml
@@ -139,6 +139,7 @@ errno:
filename_max: '4096'
fopen_max: '16'
has__builtin_va_list: true
+host_name_max: '64'
int_fast16_t: int
int_fast32_t: int
int_fast64_t: long long
@@ -149,6 +150,7 @@ little_endian: true
machdep_name: machdep_x86_32
mb_cur_max: ((size_t) 16 )
nsig: (64 + 1)
+path_max: '4096'
posix_version: 200809L
ptrdiff_t: int
rand_max: '2147483647'
@@ -167,6 +169,7 @@ sizeof_void: -1
ssize_t: int
time_t: long
tmp_max: '238328'
+tty_name_max: '32'
uint_fast16_t: unsigned int
uint_fast32_t: unsigned int
uint_fast64_t: unsigned long long
diff --git a/share/machdeps/machdep_x86_64.yaml b/share/machdeps/machdep_x86_64.yaml
index 7852eb877a8..049407efe1b 100644
--- a/share/machdeps/machdep_x86_64.yaml
+++ b/share/machdeps/machdep_x86_64.yaml
@@ -139,6 +139,7 @@ errno:
filename_max: '4096'
fopen_max: '16'
has__builtin_va_list: true
+host_name_max: '64'
int_fast16_t: long
int_fast32_t: long
int_fast64_t: long
@@ -149,6 +150,7 @@ little_endian: true
machdep_name: machdep_x86_64
mb_cur_max: ((size_t) 16 )
nsig: (64 + 1)
+path_max: '4096'
posix_version: 200809L
ptrdiff_t: long
rand_max: '2147483647'
@@ -167,6 +169,7 @@ sizeof_void: -1
ssize_t: long
time_t: long
tmp_max: '238328'
+tty_name_max: '32'
uint_fast16_t: unsigned long
uint_fast32_t: unsigned long
uint_fast64_t: unsigned long
diff --git a/share/machdeps/make_machdep/limits_macros.c b/share/machdeps/make_machdep/limits_macros.c
new file mode 100644
index 00000000000..fdef911d18e
--- /dev/null
+++ b/share/machdeps/make_machdep/limits_macros.c
@@ -0,0 +1,5 @@
+#include <limits.h>
+
+int path_max_is = PATH_MAX;
+int tty_name_max_is = TTY_NAME_MAX;
+int host_name_max_is = HOST_NAME_MAX;
diff --git a/share/machdeps/make_machdep/make_machdep.py b/share/machdeps/make_machdep/make_machdep.py
index 8c49b8e495b..9f8dd0b3f7b 100755
--- a/share/machdeps/make_machdep/make_machdep.py
+++ b/share/machdeps/make_machdep/make_machdep.py
@@ -203,6 +203,7 @@ source_files = [
("weof.c", "macro"),
("wordsize.c", "macro"),
("posix_version.c", "macro"),
+ ("limits_macros.c", "macro"),
("stdio_macros.c", "macro"),
("stdlib_macros.c", "macro"),
("nsig.c", "macro"),
diff --git a/src/kernel_internals/runtime/machdep.ml b/src/kernel_internals/runtime/machdep.ml
index 127f612a11e..8b6a81c693d 100644
--- a/src/kernel_internals/runtime/machdep.ml
+++ b/src/kernel_internals/runtime/machdep.ml
@@ -272,6 +272,9 @@ let gen_all_defines fmt mach =
gen_define_macro fmt "__FC_TMP_MAX" mach.tmp_max;
gen_define_macro fmt "__FC_RAND_MAX" mach.rand_max;
gen_define_macro fmt "__FC_MB_CUR_MAX" mach.mb_cur_max;
+ gen_define_macro fmt "__FC_PATH_MAX" mach.path_max;
+ gen_define_macro fmt "__FC_HOST_NAME_MAX" mach.host_name_max;
+ gen_define_macro fmt "__FC_TTY_NAME_MAX" mach.tty_name_max;
List.iter (gen_define_errno_macro fmt) mach.errno;
gen_define_macro fmt "__FC_TIME_T" mach.time_t;
gen_define_macro fmt "__FC_NSIG" mach.nsig;
diff --git a/src/kernel_services/ast_data/cil_types.ml b/src/kernel_services/ast_data/cil_types.ml
index 55986d1421a..e1c9e7270e8 100644
--- a/src/kernel_services/ast_data/cil_types.ml
+++ b/src/kernel_services/ast_data/cil_types.ml
@@ -1918,7 +1918,10 @@ type mach = {
eof: string; (* expansion of EOF macro *)
fopen_max: string; (* expansion of FOPEN_MAX macro *)
filename_max: string; (* expansion of FILENAME_MAX macro *)
+ host_name_max: string; (* expansion of HOST_NAME_MAX macro *)
+ tty_name_max: string; (* expansion of TTY_NAME_MAX macro *)
l_tmpnam: string; (* expansion of L_tmpnam macro *)
+ path_max: string; (* expansion of PATH_MAX macro *)
tmp_max: string; (* expansion of TMP_MAX macro *)
rand_max: string; (* expansion of RAND_MAX macro *)
mb_cur_max: string; (* expansion of MB_CUR_MAX macro *)
diff --git a/src/kernel_services/ast_queries/cil_datatype.ml b/src/kernel_services/ast_queries/cil_datatype.ml
index 80698e87233..35810382a30 100644
--- a/src/kernel_services/ast_queries/cil_datatype.ml
+++ b/src/kernel_services/ast_queries/cil_datatype.ml
@@ -2680,6 +2680,9 @@ let dummy_machdep =
eof = "(-1)";
fopen_max = "255";
filename_max = "4095";
+ path_max = "256";
+ tty_name_max = "255";
+ host_name_max = "255";
l_tmpnam = "63";
tmp_max = "1024";
rand_max = "0xFFFFFFFE";
diff --git a/src/kernel_services/ast_queries/file.ml b/src/kernel_services/ast_queries/file.ml
index 3f8d916dac7..e9d681ce0af 100644
--- a/src/kernel_services/ast_queries/file.ml
+++ b/src/kernel_services/ast_queries/file.ml
@@ -398,7 +398,10 @@ type mach = Cil_types.mach = {
eof: string;
fopen_max: string;
filename_max: string;
+ host_name_max: string;
+ tty_name_max: string;
l_tmpnam: string;
+ path_max: string;
tmp_max: string;
rand_max: string;
mb_cur_max: string;
diff --git a/tests/builtins/oracle/realloc_multiple.0.res.oracle b/tests/builtins/oracle/realloc_multiple.0.res.oracle
index 90a945812a6..5908db2b9e5 100644
--- a/tests/builtins/oracle/realloc_multiple.0.res.oracle
+++ b/tests/builtins/oracle/realloc_multiple.0.res.oracle
@@ -21,7 +21,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -56,7 +56,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -105,7 +105,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -142,7 +142,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -196,7 +196,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -238,7 +238,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -280,7 +280,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
diff --git a/tests/builtins/oracle/realloc_multiple.1.res.oracle b/tests/builtins/oracle/realloc_multiple.1.res.oracle
index 831c3434213..052f0f273fa 100644
--- a/tests/builtins/oracle/realloc_multiple.1.res.oracle
+++ b/tests/builtins/oracle/realloc_multiple.1.res.oracle
@@ -29,7 +29,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -64,7 +64,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -95,7 +95,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -150,7 +150,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -187,7 +187,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -222,7 +222,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -280,7 +280,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -326,7 +326,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
@@ -368,7 +368,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
diff --git a/tests/builtins/oracle/strnlen.res.oracle b/tests/builtins/oracle/strnlen.res.oracle
index 0853c554d16..06fce1695a9 100644
--- a/tests/builtins/oracle/strnlen.res.oracle
+++ b/tests/builtins/oracle/strnlen.res.oracle
@@ -37,7 +37,7 @@
# cvalue:
__fc_heap_status ∈ [--..--]
__fc_random_counter ∈ [--..--]
- __fc_rand_max ∈ {32767}
+ __fc_rand_max ∈ {2147483647}
__fc_random48_init ∈ {0}
__fc_random48_counter[0..2] ∈ [--..--]
__fc_p_random48_counter ∈ {{ &__fc_random48_counter[0] }}
diff --git a/tests/misc/custom_machdep.ml b/tests/misc/custom_machdep.ml
index 974683a3127..5997c0388e3 100644
--- a/tests/misc/custom_machdep.ml
+++ b/tests/misc/custom_machdep.ml
@@ -53,6 +53,9 @@ let mach =
eof = "(-1)";
fopen_max = "128";
filename_max = "1023";
+ path_max = "255";
+ tty_name_max = "255";
+ host_name_max = "255";
l_tmpnam = "255";
tmp_max = "4095";
rand_max = "0xFFFFFFFE";
diff --git a/tests/misc/custom_machdep.yaml b/tests/misc/custom_machdep.yaml
index 1fe7b404a43..1f6ef8d4b4e 100644
--- a/tests/misc/custom_machdep.yaml
+++ b/tests/misc/custom_machdep.yaml
@@ -49,6 +49,9 @@ fopen_max: '128'
filename_max: '1023'
l_tmpnam: '255'
tmp_max: '255'
+tty_name_max: '255'
+host_name_max: '255'
+path_max: '255'
rand_max: '0xFFFFFE'
mb_cur_max: '16'
sig_atomic_t: int
diff --git a/tests/syntax/machdep_char_unsigned.ml b/tests/syntax/machdep_char_unsigned.ml
index 66f8c989e2a..98030ed4398 100644
--- a/tests/syntax/machdep_char_unsigned.ml
+++ b/tests/syntax/machdep_char_unsigned.ml
@@ -51,6 +51,9 @@ let md = {
bufsiz = "8192";
eof = "(-1)";
fopen_max = "16";
+ host_name_max = "255";
+ tty_name_max = "255";
+ path_max = "255";
filename_max = "2048";
l_tmpnam = "2048";
tmp_max = "0xFFFFFFFF";
--
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