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9a28e84b32
which has the label map, switch statement stack, etc. Previously, we had a single set of maps in Sema (for the function) along with a stack of block scopes. However, this lead to funky behavior with nested functions, e.g., in the member functions of local classes. The explicit-stack approach is far cleaner, and we retain a 1-element cache so that we're not malloc/free'ing every time we enter a function. Fixes PR6382. Also, tweaked the unused-variable warning suppression logic to look at errors within a given Scope rather than within a given function. The prior code wasn't looking at the right number-of-errors count when dealing with blocks, since the block's count would be deallocated before we got to ActOnPopScope. This approach works with nested blocks/functions, and gives tighter error recovery. llvm-svn: 97518
33 lines
706 B
C
33 lines
706 B
C
// RUN: %clang_cc1 -fsyntax-only -Wunused-variable -fblocks -verify %s
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struct s0 {
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unsigned int i;
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};
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int proto(int a, int b);
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void f0(void) {
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int a __attribute__((unused)),
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b; // expected-warning{{unused}}
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return;
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}
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void f1(void) {
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int i;
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(void)sizeof(i);
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return;
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}
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// PR5933
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int f2() {
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int X = 4; // Shouldn't have a bogus 'unused variable X' warning.
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return Y + X; // expected-error {{use of undeclared identifier 'Y'}}
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}
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int f3() {
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int X1 = 4;
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(void)(Y1 + X1); // expected-error {{use of undeclared identifier 'Y1'}}
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(void)(^() { int X = 4; }); // expected-warning{{unused}}
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(void)(^() { int X = 4; return Y + X; }); // expected-error {{use of undeclared identifier 'Y'}}
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}
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