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ppc: avoid potential memleak issue when alias mnemonic is empty in PPC_printInst()

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This commit is contained in:
Nguyen Anh Quynh 2015-06-06 18:06:38 +08:00
parent 5cb356061e
commit fb18a93f73
1 changed files with 11 additions and 9 deletions
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20
arch/PowerPC/PPCInstPrinter.c
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@ -181,16 +181,18 @@ void PPC_printInst(MCInst *MI, SStream *O, void *Info)
if (!mnem)
mnem = printAliasInstr(MI, O, Info);
if ((mnem != NULL) && (strlen(mnem) > 0)) {
struct ppc_alias alias;
// check to remove the last letter of ('.', '-', '+')
if (mnem[strlen(mnem) - 1] == '-' || mnem[strlen(mnem) - 1] == '+' || mnem[strlen(mnem) - 1] == '.')
mnem[strlen(mnem) - 1] = '\0';
if (mnem != NULL) {
if (strlen(mnem) > 0) {
struct ppc_alias alias;
// check to remove the last letter of ('.', '-', '+')
if (mnem[strlen(mnem) - 1] == '-' || mnem[strlen(mnem) - 1] == '+' || mnem[strlen(mnem) - 1] == '.')
mnem[strlen(mnem) - 1] = '\0';
if (PPC_alias_insn(mnem, &alias)) {
MCInst_setOpcodePub(MI, alias.id);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.bc = (ppc_bc)alias.cc;
if (PPC_alias_insn(mnem, &alias)) {
MCInst_setOpcodePub(MI, alias.id);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.bc = (ppc_bc)alias.cc;
}
}
}