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| author | Peter Bergner <bergner@vnet.ibm.com> | 2017-03-07 09:49:10 -0600 |
|---|---|---|
| committer | Peter Bergner <bergner@vnet.ibm.com> | 2017-03-07 09:49:10 -0600 |
| commit | f7bb4e3a0d3738e8cce3dcded6ef12c9949cb85f (patch) | |
| tree | 064700505f6c3b6b01246aa0334996b826863bb4 | |
| parent | e45ced6c5e06b0092ac9f5497aa580cfad0c953c (diff) | |
| download | gdb-f7bb4e3a0d3738e8cce3dcded6ef12c9949cb85f.zip gdb-f7bb4e3a0d3738e8cce3dcded6ef12c9949cb85f.tar.gz gdb-f7bb4e3a0d3738e8cce3dcded6ef12c9949cb85f.tar.bz2 | |
GDB: Fix some null pointer dereferences due to disassembler-options patch.
gdb/
* gdbarch.sh (pstring_ptr): New static function.
(gdbarch_disassembler_options): Use it.
(gdbarch_verify_disassembler_options): Print valid_disassembler_options,
not valid_disassembler_option->name.
* gdbarch.c: Regenerate.
| -rw-r--r-- | gdb/ChangeLog | 8 | ||||
| -rw-r--r-- | gdb/gdbarch.c | 12 | ||||
| -rwxr-xr-x | gdb/gdbarch.sh | 12 |
3 files changed, 28 insertions, 4 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index f63c09c..2427b10 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,13 @@ 2017-03-07 Peter Bergner <bergner@vnet.ibm.com> + * gdbarch.sh (pstring_ptr): New static function. + (gdbarch_disassembler_options): Use it. + (gdbarch_verify_disassembler_options): Print valid_disassembler_options, + not valid_disassembler_option->name. + * gdbarch.c: Regenerate. + +2017-03-07 Peter Bergner <bergner@vnet.ibm.com> + * config/powerpc/ppc64-linux.mh (MH_CFLAGS): Delete. 2017-03-07 Pedro Alves <palves@redhat.com> diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c index f52cf5d..87eafb2 100644 --- a/gdb/gdbarch.c +++ b/gdb/gdbarch.c @@ -84,6 +84,14 @@ pstring (const char *string) return string; } +static char * +pstring_ptr (char **string) +{ + if (string == NULL || *string == NULL) + return "(null)"; + return *string; +} + /* Helper function to print a list of strings, represented as "const char *const *". The list is printed comma-separated. */ @@ -880,7 +888,7 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file) core_addr_to_string_nz (gdbarch->deprecated_function_start_offset)); fprintf_unfiltered (file, "gdbarch_dump: disassembler_options = %s\n", - pstring (*gdbarch->disassembler_options)); + pstring_ptr (gdbarch->disassembler_options)); fprintf_unfiltered (file, "gdbarch_dump: gdbarch_displaced_step_copy_insn_p() = %d\n", gdbarch_displaced_step_copy_insn_p (gdbarch)); @@ -1429,7 +1437,7 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file) host_address_to_string (gdbarch->unwind_sp)); fprintf_unfiltered (file, "gdbarch_dump: valid_disassembler_options = %s\n", - host_address_to_string (gdbarch->valid_disassembler_options->name)); + host_address_to_string (gdbarch->valid_disassembler_options)); fprintf_unfiltered (file, "gdbarch_dump: value_from_register = <%s>\n", host_address_to_string (gdbarch->value_from_register)); diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh index 6902e0e..39b1f94 100755 --- a/gdb/gdbarch.sh +++ b/gdb/gdbarch.sh @@ -1164,8 +1164,8 @@ m:const char *:gnu_triplet_regexp:void:::default_gnu_triplet_regexp::0 m:int:addressable_memory_unit_size:void:::default_addressable_memory_unit_size::0 # Functions for allowing a target to modify its disassembler options. -v:char **:disassembler_options:::0:0::0:pstring (*gdbarch->disassembler_options) -v:const disasm_options_t *:valid_disassembler_options:::0:0::0:host_address_to_string (gdbarch->valid_disassembler_options->name) +v:char **:disassembler_options:::0:0::0:pstring_ptr (gdbarch->disassembler_options) +v:const disasm_options_t *:valid_disassembler_options:::0:0::0:host_address_to_string (gdbarch->valid_disassembler_options) EOF } @@ -1678,6 +1678,14 @@ pstring (const char *string) return string; } +static char * +pstring_ptr (char **string) +{ + if (string == NULL || *string == NULL) + return "(null)"; + return *string; +} + /* Helper function to print a list of strings, represented as "const char *const *". The list is printed comma-separated. */ |