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-rw-r--r--src/interfaces/ecpg/preproc/output.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/src/interfaces/ecpg/preproc/output.c b/src/interfaces/ecpg/preproc/output.c
index 389a5272d44..616e8f04008 100644
--- a/src/interfaces/ecpg/preproc/output.c
+++ b/src/interfaces/ecpg/preproc/output.c
@@ -95,9 +95,22 @@ hashline_number(void)
#endif
)
{
- char *line = mm_alloc(strlen("\n#line %d \"%s\"\n") + sizeof(int) * CHAR_BIT * 10 / 3 + strlen(input_filename));
-
- sprintf(line, "\n#line %d \"%s\"\n", yylineno, input_filename);
+ /* "* 2" here is for escaping \s below */
+ char *line = mm_alloc(strlen("\n#line %d \"%s\"\n") + sizeof(int) * CHAR_BIT * 10 / 3 + strlen(input_filename) * 2);
+ char *src,
+ *dest;
+
+ sprintf(line, "\n#line %d \"", yylineno);
+ src = input_filename;
+ dest = line + strlen(line);
+ while (*src)
+ {
+ if (*src == '\\')
+ *dest++ = '\\';
+ *dest++ = *src++;
+ }
+ *dest = '\0';
+ strcat(dest, "\"\n");
return line;
}