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36 lines
873 B
36 lines
873 B
Avoid invalid read and uninitialized comparisons
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https://bugs.gentoo.org/915782
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https://puszcza.gnu.org.ua/bugs/?611
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This backports the following upstream commits:
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r1387
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Author: karl
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Date: Thu Oct 12 16:10:29 2023 UTC
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avoid negative index into font_tbl
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r1391
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Author: karl
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Date: Fri Oct 13 22:34:24 2023 UTC
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zero htf_4hf array to avoid uninitialized reads
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--- tex4ht-1.0.2009_06_11_1038/src/tex4ht.c
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+++ tex4ht-1.0.2009_06_11_1038/src/tex4ht.c
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@@ -7039,6 +7039,7 @@
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max_htf_4hf_n = 256;
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htf_4hf = m_alloc(struct htf_4hf_rec, 256);
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+memset (htf_4hf, 0, 256 * sizeof (struct htf_4hf_rec));
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@@ -8738,7 +8739,7 @@
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if( span_on && !in_span_ch && !ignore_chs && !in_accenting
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- && (default_font != font_tbl[cur_fnt].num) ){
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+ && cur_fnt >= 0 && (default_font != font_tbl[cur_fnt].num) ){
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if( (ch < 137) && (ch !=
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132
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) ){
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