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Merge pull request #10074 from lf-/jade/ban-implicit-fallthrough

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Warn on implicit switch case fallthrough

(cherry picked from commit 21282c3c204597641402c6bcff8fc9ee7bc31fa1)
Change-Id: I5ebbdfb6c037d2c55254f37dd391c07c2ce7443e
This commit is contained in:
eldritch horrors 2024-03-07 07:12:20 +01:00
parent 0d9a043f43
commit 1342c8f18e
3 changed files with 9 additions and 1 deletions
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2
Makefile
View file

@ -68,4 +68,4 @@ endif
include mk/lib.mk
GLOBAL_CXXFLAGS += -g -Wall -include $(buildprefix)config.h -std=c++2a -I src
GLOBAL_CXXFLAGS += -g -Wall -Wimplicit-fallthrough -include $(buildprefix)config.h -std=c++2a -I src

6
src/libexpr/lexer.l
View file

@ -20,6 +20,12 @@
#pragma clang diagnostic ignored "-Wunneeded-internal-declaration"
#endif
// yacc generates code that uses unannotated fallthrough.
#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
#ifdef __clang__
#pragma clang diagnostic ignored "-Wimplicit-fallthrough"
#endif
#include <boost/lexical_cast.hpp>
#include "nixexpr.hh"

2
tests/unit/libstore-support/tests/path.cc
View file

@ -33,6 +33,7 @@ Gen<StorePathName> Arbitrary<StorePathName>::arbitrary()
switch (auto i = *gen::inRange<uint8_t>(0, 10 + 2 * 26 + 6)) {
case 0 ... 9:
pre += '0' + i;
break;
case 10 ... 35:
pre += 'A' + (i - 10);
break;
@ -52,6 +53,7 @@ Gen<StorePathName> Arbitrary<StorePathName>::arbitrary()
pre += '.';
break;
}
[[fallthrough]];
case 65:
pre += '_';
break;