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| author | Alan Modra <amodra@gmail.com> | 2022-07-12 11:17:38 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2022-07-12 12:05:28 +0930 |
| commit | a14413ddff3009418711b9f78a7d3dc7ac10dab0 (patch) | |
| tree | 613d7d43eb298cea83cf8dab3aeb4c35558cf203 | |
| parent | 35c5dcc666082f0edf6dd559e46b98d0e7986a2e (diff) | |
| download | gdb-a14413ddff3009418711b9f78a7d3dc7ac10dab0.zip gdb-a14413ddff3009418711b9f78a7d3dc7ac10dab0.tar.gz gdb-a14413ddff3009418711b9f78a7d3dc7ac10dab0.tar.bz2 | |
PowerPC md_end: Don't htab_delete(NULL)
It might be possible to hit md_end before md_begin is called, don't
segfault if so. Also, remove a useless check.
* gas/config/tc-ppc.c (insn_calloc): Remove needless overflow
check.
(ppc_md_end): Check ppc_hash before deleting. Clear ppc_hash.
| -rw-r--r-- | gas/config/tc-ppc.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c index ac61cd8..5015777 100644 --- a/gas/config/tc-ppc.c +++ b/gas/config/tc-ppc.c @@ -1620,14 +1620,8 @@ insn_validate (const struct powerpc_opcode *op) static void * insn_calloc (size_t n, size_t size) { - size_t amt; - void *ret; - if (gas_mul_overflow (n, size, &amt)) - { - obstack_alloc_failed_handler (); - abort (); - } - ret = obstack_alloc (&insn_obstack, amt); + size_t amt = n * size; + void *ret = obstack_alloc (&insn_obstack, amt); memset (ret, 0, amt); return ret; } @@ -1903,8 +1897,12 @@ md_begin (void) void ppc_md_end (void) { - htab_delete (ppc_hash); - _obstack_free (&insn_obstack, NULL); + if (ppc_hash) + { + htab_delete (ppc_hash); + _obstack_free (&insn_obstack, NULL); + } + ppc_hash = NULL; } void |