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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2017-02-07 16:53:47 +0100 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@inria.fr> | 2017-02-07 16:53:47 +0100 |
| commit | 6805bcf7b3ddd78bcbe0e25618ccaf0429ff78ec (patch) | |
| tree | b792bd084730ddd0cb18b1399ebf6d29d6200da2 /cparser/Cflow.ml | |
| parent | 65103cdcf96b8c0411c9a7fec62a00daf6b5cb2e (diff) | |
| download | compcert-kvx-6805bcf7b3ddd78bcbe0e25618ccaf0429ff78ec.tar.gz compcert-kvx-6805bcf7b3ddd78bcbe0e25618ccaf0429ff78ec.zip | |
Cflow: analysis of "switch" was too imprecise
Plus: updated comments.
Diffstat (limited to 'cparser/Cflow.ml')
| -rw-r--r-- | cparser/Cflow.ml | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/cparser/Cflow.ml b/cparser/Cflow.ml index 7de5cf59..f5408c15 100644 --- a/cparser/Cflow.ml +++ b/cparser/Cflow.ml @@ -14,7 +14,8 @@ (* *********************************************************************) (* A simple control flow analysis for C statements. - Main purpose: emit warnings for _Noreturn functions. *) + Main purpose: emit warnings for non-void functions that fall through, + and for _Noreturn functions that can return. *) open C open Cutil @@ -148,7 +149,7 @@ let case (s: flow) : flow = fun i -> s { i with inormal = i.inormal || i.iswitch } let switch (s: flow) : flow = fun i -> - s { i with inormal = false; iswitch = true } + s { i with inormal = false; iswitch = i.inormal } (* This is the flow for an infinite loop with body [s]. There is no fallthrough exit, but all other exits from [s] are preserved. *) |