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| author | Joseph Myers <jsm28@cam.ac.uk> | 2001-06-22 20:19:03 +0100 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2001-06-22 20:19:03 +0100 |
| commit | f9e1917eb31a9c2975eabe980cbedfb44571ad6f (patch) | |
| tree | 37a3f447efcf42662b23e1928c635f11d08eafcb /gcc/c-common.c | |
| parent | 9e2f7ec7e5f627299087530e4a499cd609ee453c (diff) | |
| download | gcc-f9e1917eb31a9c2975eabe980cbedfb44571ad6f.zip gcc-f9e1917eb31a9c2975eabe980cbedfb44571ad6f.tar.gz gcc-f9e1917eb31a9c2975eabe980cbedfb44571ad6f.tar.bz2 | |
re PR c/3259 (({ }) and -Wall)
* c-common.c (verify_tree): Check for x being NULL.
* doc/c-tree.texi: Document COMPOUND_BODY of an empty
COMPOUND_STMT.
Fixes PR c/3259.
testsuite:
* gcc.dg/20010622-1.c: New test.
From-SVN: r43508
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 2c079e0..0990f23 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -1592,6 +1592,11 @@ verify_tree (x, pbefore_sp, pno_sp, writer) enum tree_code code; char class; + /* X may be NULL if it is the operand of an empty statement expression + ({ }). */ + if (x == NULL) + return; + restart: code = TREE_CODE (x); class = TREE_CODE_CLASS (code); |