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glr2.cc: fix container out-of-bounds access

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Clang 10 with ASAN enabled reported errors in glr2.cc.

* data/skeletons/glr2.cc: here.
This commit is contained in:
Valentin Tolmer
2020-09-16 17:09:12 +02:00
committed by Akim Demaille
parent 34476c449a
commit 27b5d92563
1 changed files with 5 additions and 4 deletions
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9
data/skeletons/glr2.cc
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@@ -2273,12 +2273,13 @@ public:
{ {
/* Standard special case: single stack. */ /* Standard special case: single stack. */
YYASSERT (yyk.get() == 0); YYASSERT (yyk.get() == 0);
glr_stack_item* yyrhs = yystateStack.topAt(yyk)->asItem(); glr_stack_item* yyrhs = yystateStack.firstTop()->asItem();
YY_REDUCE_PRINT ((true, yyrhs, yyk, yyrule, yyparser]b4_user_args[));
YYRESULTTAG res = yyuserAction (yyrule, yynrhs, yyrhs,
yyvalp]b4_locations_if([, yylocp])[);
yystateStack.pop_back(static_cast<size_t>(yynrhs)); yystateStack.pop_back(static_cast<size_t>(yynrhs));
yystateStack.setFirstTop(&yystateStack[yystateStack.size() - 1].getState()); yystateStack.setFirstTop(&yystateStack[yystateStack.size() - 1].getState());
YY_REDUCE_PRINT ((true, yyrhs, yyk, yyrule, yyparser]b4_user_args[)); return res;
return yyuserAction (yyrule, yynrhs, yyrhs,
yyvalp]b4_locations_if([, yylocp])[);
} }
else else
{ {