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Avoid possible problem if built with gcc 4.8 or newer.

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The problem happens due to undefined behavior in post increment when
accessing data through an union and the data being modified in the
expression.
This commit is contained in:
pcpa 2013-08-29 12:59:40 -03:00
parent bc0786e933
commit ba182b139a
1 changed files with 4 additions and 2 deletions
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6
lib/jit_ia64.c
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@ -763,7 +763,8 @@ _emit_code(jit_state_t *_jit)
undo.prolog_offset = 0;
/* code may start with a jump so add an initial function descriptor */
il(_jit->pc.w + 16); /* addr */
word = _jit->pc.w + 16;
il(word); /* addr */
il(0); /* gp */
#define case_rr(name, type) \
case jit_code_##name##r##type: \
@ -1264,7 +1265,8 @@ _emit_code(jit_state_t *_jit)
}
_jitc->prolog.ptr[_jitc->prolog.offset++] = _jit->pc.w;
/* function descriptor */
il(_jit->pc.w + 16); /* addr */
word = _jit->pc.w + 16;
il(word); /* addr */
il(0); /* gp */
}
prolog(node);