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| author | Marek Polacek <mpolacek@gcc.gnu.org> | 2016-05-23 15:37:09 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2016-05-23 15:37:09 +0000 |
| commit | a7dc5980e91d758905750a5c0a533f689eca355e (patch) | |
| tree | d51176bb0505d6371f073a25030266ac0a853be1 /gcc/common.opt | |
| parent | 7e5a3c96db2383a41587d6525b4ac9ea1fafe091 (diff) | |
| download | gcc-a7dc5980e91d758905750a5c0a533f689eca355e.zip gcc-a7dc5980e91d758905750a5c0a533f689eca355e.tar.gz gcc-a7dc5980e91d758905750a5c0a533f689eca355e.tar.bz2 | |
re PR c/49859 (gcc could warn about statements between "switch" and first "case")
PR c/49859
* common.opt (Wswitch-unreachable): New option.
* doc/invoke.texi: Document -Wswitch-unreachable.
* gimplify.c (gimplify_switch_expr): Implement the -Wswitch-unreachable
warning.
* c-c++-common/Wswitch-unreachable-1.c: New test.
* gcc.dg/Wswitch-unreachable-1.c: New test.
* c-c++-common/goacc/sb-2.c (void foo): Add dg-warning.
* g++.dg/cpp0x/lambda/lambda-switch.C (main): Likewise.
* g++.dg/gomp/block-10.C: Likewise.
* gcc.dg/gomp/block-10.c: Likewise.
* g++.dg/gomp/block-9.C: Likewise.
* gcc.dg/gomp/block-9.c: Likewise.
* g++.dg/gomp/target-1.C: Likewise.
* g++.dg/gomp/target-2.C: Likewise.
* gcc.dg/gomp/target-1.c: Likewise.
* gcc.dg/gomp/target-2.c: Likewise.
* g++.dg/gomp/taskgroup-1.C: Likewise.
* gcc.dg/gomp/taskgroup-1.c: Likewise.
* gcc.dg/gomp/teams-1.c: Likewise.
* g++.dg/gomp/teams-1.C: Likewise.
* g++.dg/overload/error3.C: Likewise.
* g++.dg/tm/jump1.C: Likewise.
* g++.dg/torture/pr40335.C: Likewise.
* gcc.dg/c99-vla-jump-5.c: Likewise.
* gcc.dg/switch-warn-1.c: Likewise.
* gcc.dg/Wjump-misses-init-1.c: Use -Wno-switch-unreachable.
* gcc.dg/nested-func-1.c: Likewise.
* gcc.dg/pr67784-4.c: Likewise.
From-SVN: r236597
Diffstat (limited to 'gcc/common.opt')
| -rw-r--r-- | gcc/common.opt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/common.opt b/gcc/common.opt index 682cb41..fccd4b5 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -707,6 +707,11 @@ Wsuggest-final-methods Common Var(warn_suggest_final_methods) Warning Warn about C++ virtual methods where adding final keyword would improve code quality. +Wswitch-unreachable +Common Var(warn_switch_unreachable) Warning Init(1) +Warn about statements between switch's controlling expression and the first +case. + Wsystem-headers Common Var(warn_system_headers) Warning Do not suppress warnings from system headers. |