[llvm-branch-commits] [clang] f1491c7 - [clang-format] Fix a crash with AlignArrayOfStructures option (#86420)

Tom Stellard via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Mon May 13 17:56:11 PDT 2024


Author: Owen Pan
Date: 2024-05-13T17:55:32-07:00
New Revision: f1491c7460e788f15d3fc2ad2a6bcf86606272ec

URL: https://github.com/llvm/llvm-project/commit/f1491c7460e788f15d3fc2ad2a6bcf86606272ec
DIFF: https://github.com/llvm/llvm-project/commit/f1491c7460e788f15d3fc2ad2a6bcf86606272ec.diff

LOG: [clang-format] Fix a crash with AlignArrayOfStructures option (#86420)

Fixes #86109.

(cherry picked from commit cceedc939a43c7c732a5888364251775bffc2dba)

Added: 
    

Modified: 
    clang/lib/Format/WhitespaceManager.cpp
    clang/unittests/Format/FormatTest.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Format/WhitespaceManager.cpp b/clang/lib/Format/WhitespaceManager.cpp
index df84f97a8e8ac..7525e6ee650b6 100644
--- a/clang/lib/Format/WhitespaceManager.cpp
+++ b/clang/lib/Format/WhitespaceManager.cpp
@@ -1466,7 +1466,7 @@ WhitespaceManager::CellDescriptions WhitespaceManager::getCells(unsigned Start,
                                                                 : Cell);
         // Go to the next non-comment and ensure there is a break in front
         const auto *NextNonComment = C.Tok->getNextNonComment();
-        while (NextNonComment->is(tok::comma))
+        while (NextNonComment && NextNonComment->is(tok::comma))
           NextNonComment = NextNonComment->getNextNonComment();
         auto j = i;
         while (Changes[j].Tok != NextNonComment && j < End)

diff  --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 923128672c316..0161a1685eb12 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -20955,7 +20955,14 @@ TEST_F(FormatTest, CatchAlignArrayOfStructuresRightAlignment) {
                 "    [0] = {1, 1},\n"
                 "    [1] { 1, 1, },\n"
                 "    [2] { 1, 1, },\n"
-                "};");
+                "};",
+                Style);
+  verifyNoCrash("test arr[] = {\n"
+                "#define FOO(i) {i, i},\n"
+                "SOME_GENERATOR(FOO)\n"
+                "{2, 2}\n"
+                "};",
+                Style);
 
   verifyFormat("return GradForUnaryCwise(g, {\n"
                "                                {{\"sign\"}, \"Sign\",  "
@@ -21208,7 +21215,14 @@ TEST_F(FormatTest, CatchAlignArrayOfStructuresLeftAlignment) {
                 "    [0] = {1, 1},\n"
                 "    [1] { 1, 1, },\n"
                 "    [2] { 1, 1, },\n"
-                "};");
+                "};",
+                Style);
+  verifyNoCrash("test arr[] = {\n"
+                "#define FOO(i) {i, i},\n"
+                "SOME_GENERATOR(FOO)\n"
+                "{2, 2}\n"
+                "};",
+                Style);
 
   verifyFormat("return GradForUnaryCwise(g, {\n"
                "                                {{\"sign\"}, \"Sign\", {\"x\", "


        


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