The previous macro definition using `{...}` would fail to compile when the callsite uses a semicolon followed by an else-statement (i.e., `if (...) FATAL(...); else ...;`). Replacing the simple braces with `do{...}while(0)` (n.b., semicolon not included in the macro definition) enables callsites to use the semicolon plus else-statement syntax without problems. The new definition now requires the semicolon at all callsites, but since it was already being called that way nothing changes.
For more explanation, see <https://gcc.gnu.org/onlinedocs/cpp/Swallowing-the-Semicolon.html>
Reviewed By: aartbik
Differential Revision: https://reviews.llvm.org/D126514
// to track down whether an error is coming from our code vs somewhere else
// in MLIR.)
#define FATAL(...) \
- { \
+ do { \
fprintf(stderr, "SparseTensorUtils: " __VA_ARGS__); \
exit(1); \
- }
+ } while (0)
// TODO: try to unify this with `SparseTensorFile::assertMatchesShape`
// which is used by `openSparseTensorCOO`. It's easy enough to resolve