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author | Zancanaro; Carlo <czan8762@plang3.cs.usyd.edu.au> | 2012-09-24 09:58:17 +1000 |
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committer | Zancanaro; Carlo <czan8762@plang3.cs.usyd.edu.au> | 2012-09-24 09:58:17 +1000 |
commit | 222e2a7620e6520ffaf4fc4e69d79c18da31542e (patch) | |
tree | 7bfbc05bfa3b41c8f9d2e56d53a0bc3e310df239 /clang/test/SemaCXX/warn-large-by-value-copy.cpp | |
parent | 3d206f03985b50beacae843d880bccdc91a9f424 (diff) |
Add the clang library to the repo (with some of my changes, too).
Diffstat (limited to 'clang/test/SemaCXX/warn-large-by-value-copy.cpp')
-rw-r--r-- | clang/test/SemaCXX/warn-large-by-value-copy.cpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/warn-large-by-value-copy.cpp b/clang/test/SemaCXX/warn-large-by-value-copy.cpp new file mode 100644 index 0000000..3e419ec --- /dev/null +++ b/clang/test/SemaCXX/warn-large-by-value-copy.cpp @@ -0,0 +1,47 @@ +// RUN: %clang_cc1 -verify -fsyntax-only -Wlarge-by-value-copy=100 %s + +// rdar://8548050 +namespace rdar8548050 { + +struct S100 { + char x[100]; +}; + +struct S101 { + char x[101]; +}; + +S100 f100(S100 s) { return s; } + +S101 f101(S101 s) { return s; } // expected-warning {{return value of 'f101' is a large (101 bytes) pass-by-value object}} \ + // expected-warning {{'s' is a large (101 bytes) pass-by-value argument}} + +typedef int Arr[200]; +void farr(Arr a) { } + +struct NonPOD { + char x[200]; + virtual void m(); +}; + +NonPOD fNonPOD(NonPOD s) { return s; } + +template <unsigned size> +struct TS { + char x[size]; +}; + +template <unsigned size> +void tf(TS<size> ts) {} // expected-warning {{ts' is a large (300 bytes) pass-by-value argument}} + +void g() { + TS<300> ts; + tf<300>(ts); // expected-note {{instantiation}} +} + +} + +template<typename T> class DependentPOD { + enum b { x }; + b foo() { return x; } +}; |