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GCC implements -Wvla as "warn on every VLA" (this is useful to find every VLA, for example, if they are forbidden by coding guidelines). Currently Clang implements -Wvla as "warn on VLA when it is an extension". The attached patch makes our behavior match GCC. The existing vla extwarn is moved under -Wvla-extension and is still included into -Wgnu. This fixes PR5953. llvm-svn: 173286
13 lines
370 B
C
13 lines
370 B
C
// RUN: %clang_cc1 -std=c99 -fsyntax-only -verify -Wvla %s
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// RUN: %clang_cc1 -std=c89 -fsyntax-only -verify -Wvla %s
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void test1(int n) {
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int v[n]; // expected-warning {{variable length array used}}
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}
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void test2(int n, int v[n]) { // expected-warning {{variable length array used}}
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}
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void test3(int n, int v[n]); // expected-warning {{variable length array used}}
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