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Fix assignment to/from volatile types

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Code like this was broken:

   char volatile vi = i;

See testcase, happens in ideosyncratic legacy code sprinkling
volatile all over.
This commit is contained in:
Michael Matz
2016-03-26 17:57:22 +01:00
parent 8fc5a6a2a4
commit 80343ab7d8
3 changed files with 17 additions and 0 deletions
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3
i386-gen.c
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@ -223,6 +223,8 @@ ST_FUNC void load(int r, SValue *sv)
ft = sv->type.t;
fc = sv->c.i;
ft &= ~(VT_VOLATILE | VT_CONSTANT);
v = fr & VT_VALMASK;
if (fr & VT_LVAL) {
if (v == VT_LLOCAL) {
@ -298,6 +300,7 @@ ST_FUNC void store(int r, SValue *v)
ft = v->type.t;
fc = v->c.i;
fr = v->r & VT_VALMASK;
ft &= ~(VT_VOLATILE | VT_CONSTANT);
bt = ft & VT_BTYPE;
/* XXX: incorrect if float reg to reg */
if (bt == VT_FLOAT) {