diff options
Diffstat (limited to 'gcc/testsuite/g++.dg/warn/Wunreachable-code-1.C')
| -rw-r--r-- | gcc/testsuite/g++.dg/warn/Wunreachable-code-1.C | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/warn/Wunreachable-code-1.C b/gcc/testsuite/g++.dg/warn/Wunreachable-code-1.C new file mode 100644 index 00000000000..23fc86dfbb2 --- /dev/null +++ b/gcc/testsuite/g++.dg/warn/Wunreachable-code-1.C @@ -0,0 +1,22 @@ +/* PR17544 Incorrect -Wunreachable-code warning + Origin: sebor@roguewave.com + + G++ appends a "return 0;" when finishing a function, but it was not + given a source location. The gimplifier thinks a return statement + needs a locus so it would add one, making the compiler generated code + visible to the unreachable code warning. */ + +/* { dg-do compile } */ +/* { dg-options "-O -Wunreachable-code" } */ + +int +main (int argc, char *argv[]) +{ + const char* const s = argc < 2 ? "" : argv [1]; + int i = 0; + do { + ++i; + } while (i < s [0]); + return i; +} + |