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riscv-gcc-1
Commit 5f0abdc3 by Richard Stallman
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(yylex): Avoid invalid shift for erroneous empty char const. 

From-SVN: r4292
parent c141a106
Showing with 5 additions and 2 deletions
gcc/c-lex.c
......@@ -1847,8 +1847,11 @@ yylex ()
if (! wide_flag)
{
int num_bits = num_chars * width;
if (TREE_UNSIGNED (char_type_node)
|| ((result >> (num_bits - 1)) & 1) == 0)
if (num_bits == 0)
/* We already got an error; avoid invalid shift. */
yylval.ttype = build_int_2 (0, 0);
else if (TREE_UNSIGNED (char_type_node)
|| ((result >> (num_bits - 1)) & 1) == 0)
yylval.ttype
= build_int_2 (result & ((unsigned HOST_WIDE_INT) ~0
>> (HOST_BITS_PER_WIDE_INT - num_bits)),
......
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