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| author | Richard Biener <rguenther@suse.de> | 2021-05-17 14:47:08 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-05-17 16:18:31 +0200 |
| commit | 086882b1c8faa8f99f98a9219ccec42d89db50c2 (patch) | |
| tree | be060598560d2eb026f155451bd85c13bf6b424d /gcc | |
| parent | 47abe2abf1210847629ebc271b1fc8c6d53f0d47 (diff) | |
| download | gcc-086882b1c8faa8f99f98a9219ccec42d89db50c2.zip gcc-086882b1c8faa8f99f98a9219ccec42d89db50c2.tar.gz gcc-086882b1c8faa8f99f98a9219ccec42d89db50c2.tar.bz2 | |
c/100625 - avoid building invalid labels in the GIMPLE FE
When duplicate labes are diagnosed, avoid building a GIMPLE_LABEL.
2021-05-17 Richard Biener <rguenther@suse.de>
PR c/100625
gcc/c/
* gimple-parser.c (c_parser_gimple_label): Avoid building
a GIMPLE label with NULL label decl.
gcc/testsuite/
* gcc.dg/gimplefe-error-9.c: New testcase.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/c/gimple-parser.c | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/gimplefe-error-9.c | 9 |
2 files changed, 11 insertions, 1 deletions
diff --git a/gcc/c/gimple-parser.c b/gcc/c/gimple-parser.c index 3a6e72e..398e216 100644 --- a/gcc/c/gimple-parser.c +++ b/gcc/c/gimple-parser.c @@ -1887,7 +1887,8 @@ c_parser_gimple_label (gimple_parser &parser, gimple_seq *seq) gcc_assert (c_parser_next_token_is (parser, CPP_COLON)); c_parser_consume_token (parser); tree label = define_label (loc1, name); - gimple_seq_add_stmt_without_update (seq, gimple_build_label (label)); + if (label) + gimple_seq_add_stmt_without_update (seq, gimple_build_label (label)); return; } diff --git a/gcc/testsuite/gcc.dg/gimplefe-error-9.c b/gcc/testsuite/gcc.dg/gimplefe-error-9.c new file mode 100644 index 0000000..87014c1 --- /dev/null +++ b/gcc/testsuite/gcc.dg/gimplefe-error-9.c @@ -0,0 +1,9 @@ +/* { dg-do compile } */ +/* { dg-options "-fgimple" } */ + +void __GIMPLE +foo() +{ +bb1: +bb1:; /* { dg-error "duplicate" } */ +} |