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| author | Chris Lattner <sabre@nondot.org> | 2010-07-07 06:14:23 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-07-07 06:14:23 +0000 |
| commit | 3956106543637429e25878d98948bee847be8966 (patch) | |
| tree | 98b709c296080397f85220e56fc79081d3d6765a /clang/test/Sema/exprs.c | |
| parent | 11086fcb654629ac5257a29f2b4f20070c00a83b (diff) | |
| download | bcm5719-llvm-3956106543637429e25878d98948bee847be8966.tar.gz bcm5719-llvm-3956106543637429e25878d98948bee847be8966.zip | |
implement PR7569, warning about assignment to null, which
people seem to write when they want a deterministic trap.
Suggest instead that they use a volatile pointer or
__builtin_trap.
llvm-svn: 107756
Diffstat (limited to 'clang/test/Sema/exprs.c')
| -rw-r--r-- | clang/test/Sema/exprs.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/clang/test/Sema/exprs.c b/clang/test/Sema/exprs.c index dbb6e80aa6d..b22b5220f28 100644 --- a/clang/test/Sema/exprs.c +++ b/clang/test/Sema/exprs.c @@ -134,3 +134,11 @@ void test18(int b) { test18_a(b, b); // expected-error {{too many arguments to function call, expected 1, have 2}} test18_a(); // expected-error {{too few arguments to function call, expected 1, have 0}} } + +// PR7569 +void test19() { + *(int*)0 = 0; // expected-warning {{indirection of non-volatile null pointer}} \ + // expected-note {{consider using __builtin_trap}} + *(volatile int*)0 = 0; // Ok. +} + |
