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| author | Nick Clifton <nickc@redhat.com> | 2021-02-08 18:31:21 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2021-02-08 18:31:21 +0000 |
| commit | 80b652efa2e969d865d06e1a4aec16b4dcd9f435 (patch) | |
| tree | 45cd6d47cba989f88c71a84219ae0c9ea607cb21 | |
| parent | 4001d90ddecdfc0e89daa4eca17006e20ad626c0 (diff) | |
| download | gdb-80b652efa2e969d865d06e1a4aec16b4dcd9f435.zip gdb-80b652efa2e969d865d06e1a4aec16b4dcd9f435.tar.gz gdb-80b652efa2e969d865d06e1a4aec16b4dcd9f435.tar.bz2 | |
Fix an illegal memory access when parsing a corrupt assembler file.
PR 27355
* dwarf2dbg.c (allocate_filename_to_slot): Allocate the dirs array
if it has not already been created.
| -rw-r--r-- | gas/ChangeLog | 6 | ||||
| -rw-r--r-- | gas/dwarf2dbg.c | 12 |
2 files changed, 16 insertions, 2 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 3d55c7f..83b2721 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,9 @@ +2021-02-08 Nick Clifton <nickc@redhat.com> + + PR 27355 + * dwarf2dbg.c (allocate_filename_to_slot): Allocate the dirs array + if it has not already been created. + 2021-02-04 Nelson Chu <nelson.chu@sifive.com> * config/tc-riscv.c (riscv_multi_subset_supports): Removed diff --git a/gas/dwarf2dbg.c b/gas/dwarf2dbg.c index 4fbd1e3..f0cdc23 100644 --- a/gas/dwarf2dbg.c +++ b/gas/dwarf2dbg.c @@ -769,7 +769,7 @@ allocate_filename_to_slot (const char * dirname, { const char * dir = NULL; - if (dirs) + if (dirs != NULL) dir = dirs[files[num].dir]; if (with_md5 @@ -787,7 +787,15 @@ allocate_filename_to_slot (const char * dirname, /* If the filenames match, but the directory table entry was empty, then fill it with the provided directory name. */ if (dir == NULL) - dirs[files[num].dir] = xmemdup0 (dirname, strlen (dirname)); + { + if (dirs == NULL) + { + dirs_allocated = files[num].dir + 32; + dirs = XCNEWVEC (char *, dirs_allocated); + } + + dirs[files[num].dir] = xmemdup0 (dirname, strlen (dirname)); + } return TRUE; } |