Fix Libtxt unit test errors found by ASAN (flutter#28146)

Author: jason-simmons

third_party/txt/src/txt/paragraph_txt.cc

@@ -1992,7 +1992,8 @@ Paragraph::Range<size_t> ParagraphTxt::GetWordBoundary(size_t offset) {
       return Range<size_t>(0, 0);
   }
 
-  word_breaker_->setText(icu::UnicodeString(false, text_.data(), text_.size()));
+  icu::UnicodeString icu_text(false, text_.data(), text_.size());
+  word_breaker_->setText(icu_text);
 
   int32_t prev_boundary = word_breaker_->preceding(offset + 1);
   int32_t next_boundary = word_breaker_->next();

third_party/txt/src/txt/text_style.cc

@@ -54,6 +54,8 @@ bool TextStyle::equals(const TextStyle& other) const {
     return false;
   if (foreground != other.foreground)
     return false;
+  if (font_families.size() != other.font_families.size())
+    return false;
   if (text_shadows.size() != other.text_shadows.size())
     return false;
   for (size_t font_index = 0; font_index < font_families.size(); ++font_index) {

third_party/txt/tests/paragraph_unittests.cc

@@ -2489,11 +2489,10 @@ TEST_F(ParagraphTest, DISABLE_ON_WINDOWS(RightAlignParagraph)) {
   ASSERT_TRUE(paragraph->records_[0].style().equals(text_style));
   ASSERT_DOUBLE_EQ(paragraph->records_[0].offset().y(), expected_y);
   expected_y += 30;
-  ASSERT_NEAR(
-      paragraph->records_[0].offset().x(),
-      paragraph->width_ -
-          paragraph->breaker_.getWidths()[paragraph->records_[0].line()],
-      2.0);
+  ASSERT_NEAR(paragraph->records_[0].offset().x(),
+              paragraph->width_ -
+                  paragraph->line_widths_[paragraph->records_[0].line()],
+              2.0);
 
   // width_ takes the full available space, while longest_line_ wraps the glyphs
   // as tightly as possible. Even though this text is more than one line long,
@@ -2506,37 +2505,33 @@ TEST_F(ParagraphTest, DISABLE_ON_WINDOWS(RightAlignParagraph)) {
   ASSERT_TRUE(paragraph->records_[2].style().equals(text_style));
   ASSERT_DOUBLE_EQ(paragraph->records_[2].offset().y(), expected_y);
   expected_y += 30;
-  ASSERT_NEAR(
-      paragraph->records_[2].offset().x(),
-      paragraph->width_ -
-          paragraph->breaker_.getWidths()[paragraph->records_[2].line()],
-      2.0);
+  ASSERT_NEAR(paragraph->records_[2].offset().x(),
+              paragraph->width_ -
+                  paragraph->line_widths_[paragraph->records_[2].line()],
+              2.0);
 
   ASSERT_TRUE(paragraph->records_[4].style().equals(text_style));
   ASSERT_DOUBLE_EQ(paragraph->records_[4].offset().y(), expected_y);
   expected_y += 30;
-  ASSERT_NEAR(
-      paragraph->records_[4].offset().x(),
-      paragraph->width_ -
-          paragraph->breaker_.getWidths()[paragraph->records_[4].line()],
-      2.0);
+  ASSERT_NEAR(paragraph->records_[4].offset().x(),
+              paragraph->width_ -
+                  paragraph->line_widths_[paragraph->records_[4].line()],
+              2.0);
 
   ASSERT_TRUE(paragraph->records_[6].style().equals(text_style));
   ASSERT_DOUBLE_EQ(paragraph->records_[6].offset().y(), expected_y);
   expected_y += 30 * 10;
-  ASSERT_NEAR(
-      paragraph->records_[6].offset().x(),
-      paragraph->width_ -
-          paragraph->breaker_.getWidths()[paragraph->records_[6].line()],
-      2.0);
+  ASSERT_NEAR(paragraph->records_[6].offset().x(),
+              paragraph->width_ -
+                  paragraph->line_widths_[paragraph->records_[6].line()],
+              2.0);
 
   ASSERT_TRUE(paragraph->records_[26].style().equals(text_style));
   ASSERT_DOUBLE_EQ(paragraph->records_[26].offset().y(), expected_y);
-  ASSERT_NEAR(
-      paragraph->records_[26].offset().x(),
-      paragraph->width_ -
-          paragraph->breaker_.getWidths()[paragraph->records_[26].line()],
-      2.0);
+  ASSERT_NEAR(paragraph->records_[26].offset().x(),
+              paragraph->width_ -
+                  paragraph->line_widths_[paragraph->records_[26].line()],
+              2.0);
 
   ASSERT_EQ(paragraph_style.text_align,
             paragraph->GetParagraphStyle().text_align);
@@ -2609,7 +2604,7 @@ TEST_F(ParagraphTest, DISABLE_ON_WINDOWS(CenterAlignParagraph)) {
   expected_y += 30;
   ASSERT_NEAR(paragraph->records_[0].offset().x(),
               (paragraph->width_ -
-               paragraph->breaker_.getWidths()[paragraph->records_[0].line()]) /
+               paragraph->line_widths_[paragraph->records_[0].line()]) /
                   2,
               2.0);
 
@@ -2618,7 +2613,7 @@ TEST_F(ParagraphTest, DISABLE_ON_WINDOWS(CenterAlignParagraph)) {
   expected_y += 30;
   ASSERT_NEAR(paragraph->records_[2].offset().x(),
               (paragraph->width_ -
-               paragraph->breaker_.getWidths()[paragraph->records_[2].line()]) /
+               paragraph->line_widths_[paragraph->records_[2].line()]) /
                   2,
               2.0);
 
@@ -2627,7 +2622,7 @@ TEST_F(ParagraphTest, DISABLE_ON_WINDOWS(CenterAlignParagraph)) {
   expected_y += 30;
   ASSERT_NEAR(paragraph->records_[4].offset().x(),
               (paragraph->width_ -
-               paragraph->breaker_.getWidths()[paragraph->records_[4].line()]) /
+               paragraph->line_widths_[paragraph->records_[4].line()]) /
                   2,
               2.0);
 
@@ -2636,18 +2631,17 @@ TEST_F(ParagraphTest, DISABLE_ON_WINDOWS(CenterAlignParagraph)) {
   expected_y += 30 * 10;
   ASSERT_NEAR(paragraph->records_[6].offset().x(),
               (paragraph->width_ -
-               paragraph->breaker_.getWidths()[paragraph->records_[6].line()]) /
+               paragraph->line_widths_[paragraph->records_[6].line()]) /
                   2,
               2.0);
 
   ASSERT_TRUE(paragraph->records_[26].style().equals(text_style));
   ASSERT_DOUBLE_EQ(paragraph->records_[26].offset().y(), expected_y);
-  ASSERT_NEAR(
-      paragraph->records_[26].offset().x(),
-      (paragraph->width_ -
-       paragraph->breaker_.getWidths()[paragraph->records_[26].line()]) /
-          2,
-      2.0);
+  ASSERT_NEAR(paragraph->records_[26].offset().x(),
+              (paragraph->width_ -
+               paragraph->line_widths_[paragraph->records_[26].line()]) /
+                  2,
+              2.0);
 
   ASSERT_EQ(paragraph_style.text_align,
             paragraph->GetParagraphStyle().text_align);